INFINITI : September 2019

Monday, September 30, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 229

Is the inspection result normal?

YES - INSPECTION END

NO - Replace mass air flow sensor (with intake air temperature sensor) (bank 1).

P0116

P0116 ECT SENSOR

Description

The engine coolant temperature sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The

modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in

temperature. The electrical resistance of the thermistor decreases as temperature increases.

[Reference data]

DTC Logic

DTC DETECTION LOGIC

NOTE:

If DTC P0116 is displayed with DTC P0117 or P0118, first perform the trouble diagnosis for DTC P0117, P0118. See: P Code

Charts/P0117.

DTC CONFIRMATION PROCEDURE

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 51

3. Check continuity between AFS control unit harness connector

(A) and front combination lamp LH harness connector (B).

OK or NG

OK - Replace front combination lamp LH (swivel position sensor malfunction). See: Lighting and Horns/Testing and Inspection/Symptom

Related Diagnostic Procedures/AFS Off Indicator Does Not Operate See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Steering/Steering Angle Sensor/Service and Repair/Active AFS See: Lighting and Horns/Headlamp/Service

and Repair/Active AFS See: Lighting and Horns/Headlamp/Headlamp Alignment Control Module/Service and Repair, "Removal and Instal-

lation of Front Combination Lamp".

NG - Repair harness or connector.

6.CHECK SWIVEL POSITION SENSOR GROUND

Check voltage between AFS control unit harness connector and ground.

OK or NG

OK - GO TO 7.

NG - Check connector for connection, bend and loose fit. If it is normal, replace AFS control unit. See: Lighting and Horns/Headlamp/Headlamp

Alignment Control Module/Service and Repair.

7.CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect AFS control unit connector and front combination lamp LH connector.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 160

3. Check the voltage between HO2S2 harness connector and ground.

Is the inspection result normal?

YES - GO TO 4.

NO - GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors E12, F3

- IPDM E/R harness connector E7

- 15 A fuse (No. 85)

- Harness for open or short between HO2S2 and fuse

- Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between HO2S2 harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK HEATED OXYGEN SENSOR 2 HEATER

See: P Code Charts/P0037.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace malfunctioning heated oxygen sensor 2.

CAUTION:

- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a

concrete floor; use a new one.

- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

- INSPECTION END

7.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.CHECK HEATED OXYGEN SENSOR 2 (HO2S2) HEATER

1. Turn ignition switch OFF.

2. Disconnect HO2S2 harness connector.

Sunday, September 29, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 35

B2013

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

B2013 STRG COMM 1

DIAGNOSIS DESCRIPTION

B2013 steering lock communication malfunction monitors the communication condition between Intelligent

Key unit and steering lock unit. If the reply from the steering lock unit against the communication from Intelligent Key unit does not come twice

continuously, Intelligent Key unit judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code).

TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT

SELF-DIAGNOSTIC LOGIC

DIAGNOSTIC PROCEDURE

1.CHECK STEERING LOCK UNIT POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect steering lock unit connector.

3. Check voltage between steering lock unit connector and ground.

OK or NG

OK - GO TO 3.

NG - GO TO 2.

2.CHECK HARNESS CONTINUITY 1

1. Disconnect Intelligent Key unit connector.

2. Check continuity between Intelligent Key unit connector and steering lock unit connector.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 603

Saturday, September 28, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 402

DTC Logic

DTC DETECTION LOGIC

NOTE:

If DTC P0122, P0123, P0227 or P0228 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. See: P Code

Charts/P0643.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 1 second.

2. Check DTC.

Is DTC detected?

YES - Go to See: P Code Charts/P0122.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 801

2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "U0401: ECM CAN CIR1" (DTC 120) is indicated in self-diagnosis item

in the display.

Is it indicated?

YES - 1. CAN communication inspection. See: U Code Charts/U1000/ACS/ICC.

2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.

Then perform self-diagnosis of ICC system again.

NO - GO TO 2.

2.PERFORM ECM SELF-DIAGNOSIS

With CONSULT-III

1. Perform "ENGINE" self-diagnosis. See: Diagnostic Trouble Code Descriptions/DTC Index/EC (for VQ35HR) or , "CONSULT-III

Function" (for VK45DE).

2. Check if malfunction is indicated.

Is malfunction indicated?

YES - 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

U0402

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

U0402 TCM CAN CIR1

1.PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

1. Perform self-diagnosis.

2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "U0402: TCM CAN CIR1" (DTC 122) is indicated in self-diagnosis item

in the display.

Is it indicated?

YES - 1. CAN communication inspection. See: U Code Charts/U1000/ACS/ICC.

2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.

Then perform self-diagnosis of ICC system again.

NO - GO TO 2.

2.PERFORM TCM SELF-DIAGNOSIS

With CONSULT-III

1. Perform "TRANSMISSION" self-diagnosis. See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Scan Tool

Testing and Procedures/5AT RE5R05A/Trouble Diagnosis/CONSULT-III Function (Transmission)(for 5AT models) or See: Diagnostic

Trouble Code Descriptions/DTC Index/TCM (for 7AT models).

2. Check if malfunction is indicated.

Is malfunction indicated?

YES - 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

U0405

U0405 LDP) ICC CAM CAN CIR1

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.DTC ERASE

Erase the DTC memory of ABS actuator and electric unit (control unit) with CONSULT-III.

- GO TO 2.

2.DTC CONFIRMATION

1. Turn ignition switch ON and wait for 2 seconds or more.

2. Perform the self-diagnosis of ABS actuator and electric unit (control unit) with CONSULT-III.

Is the DTC "U0405" detected?

YES - See: U Code Charts/U0405.

NO - See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Perform Efficient Diagnosis For an Electrical Incident.

Friday, September 27, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 259

Perform See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic

Overview/Trouble Diagnosis For Intermittent Incident/Description.

Is the inspection result normal?

YES - GO TO 6.

NO - Repair or replace malfunctioning part.

6.REPLACE A/F SENSOR 1

Replace malfunctioning A/F sensor 1.

CAUTION:

- Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor;

use a new one.

- Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

- INSPECTION END

P0131

P0131, P0151 A/F SENSOR 1

Description

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer,

which transports ions. It has a heater in the element.

The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a

clear, continuous signal throughout a wide range.

The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative

oxygen density in lean. Also this current relative hydrocarbon density in rich.

Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to

ensure the required operating temperature of approximately 800锟紺 (1,472锟紽).

DTC Logic

DTC DETECTION LOGIC

To judge the malfunction, the diagnosis checks that the air fuel ratio (A/F) signal computed by ECM from the A/F sensor 1 signal is not

inordinately low.

DTC CONFIRMATION PROCEDURE

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 258

3. Check the voltage between A/F sensor 1 harness connector and ground.

Is the inspection result normal?

YES - GO TO 4.

NO - GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors E12, F3

- IPDM E/R harness connector E7

- 15 A fuse (No. 85)

- Harness for open or short between A/F sensor 1 and fuse

- Repair or replace harness or connectors.

4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

5. Also check harness for short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK INTERMITTENT INCIDENT

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 688

4. Check the voltage between ICC brake switch harness connector and ground.

Is the inspection result normal?

YES - GO TO 5.

NO - GO TO 4.

4.DETECT MALFUNCTIONING PART

Check the following.

- Fuse block (J/B) connector E102

- 10 A fuse (No. 12)

- Harness for open or short between ICC brake hold relay switch and fuse

- Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between ICC brake switch harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors E108, M15

- Harness for open or short between ICC brake switch and ECM

- Repair open circuit, short to ground or short to power in harness or connectors.

7.CHECK ICC BRAKE SWITCH

See: P Code Charts/P1572/ICC Brake Switch.

Is the inspection result normal?

YES - GO TO 15.

NO - Replace ICC brake switch.

8.CHECK DTC WITH ICC SENSOR INTEGRATED UNIT

See: Diagnostic Trouble Code Descriptions/Cruise Control System.

Is the inspection result normal?

YES - GO TO 9.

NO - Repair or replace.

9.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch harness connector.

3. Disconnect ICC brake hold relay.

Thursday, September 26, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 468

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0340.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 298

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 4.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

3. Also check harness for short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK HEATED OXYGEN SENSOR 2

See: P Code Charts/P0139.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace malfunctioning heated oxygen sensor 2.

CAUTION:

- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a

concrete floor; use a new one.

- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

- INSPECTION END

7.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.INSPECTION START

Will CONSULT-III be used?

YES - GO TO 2.

NO - GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2 (HO2S2)

With CONSULT-III

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.

2. Start engine and warm it up to the normal operating temperature.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 263

3. Check the voltage between A/F sensor 1 harness connector and ground.

Is the inspection result normal?

YES - GO TO 4.

NO - GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors E12, F3

- IPDM E/R harness connector E7

- 15 A fuse (No. 85)

- Harness for open or short between A/F sensor 1 and fuse

- Repair or replace harness or connectors.

4.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

5. Also check harness for short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK INTERMITTENT INCIDENT

Wednesday, September 25, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 438

Check the initial spark plug for fouling, etc.

Is the inspection result normal?

YES - Replace spark plug(s) with standard type one(s). For spark plug type, See: Maintenance.

NO - Repair or clean spark plug. Then GO TO 8.

8.CHECK FUNCTION OF IGNITION COIL-III

1. Reconnect the initial spark plugs.

2. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark plug and the grounded portion.

Spark should be generated.

Is the inspection result normal?

YES - INSPECTION END

NO - Replace spark plug(s) with standard type one(s). For spark plug type, See: Maintenance.

9.CHECK COMPRESSION PRESSURE

Check compression pressure. See: Engine, Cooling and Exhaust/Engine/Compression Check/Testing and Inspection.

Is the inspection result normal?

YES - GO TO 10.

NO - Check pistons, piston rings, valves, valve seats and cylinder head gaskets.

10.CHECK FUEL PRESSURE

1. Install all removed parts.

2. Check fuel pressure. See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Fuel Pressure/Testing and

Inspection.

Is the inspection result normal?

YES - GO TO 12.

NO - GO TO 11.

11.DETECT MALFUNCTIONING PART

Check fuel hoses and fuel tubes for clogging.

Is the inspection result normal?

YES - Replace "fuel filter and fuel pump assembly".

NO - Repair or replace malfunctioning part.

12.CHECK IDLE SPEED AND IGNITION TIMING

Check idle speed and ignition timing.

For procedure, See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic

Overview/Basic Inspection.

For specification, See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Specifications and See: Engine,

Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Ignition Timing/Specifications.

Is the inspection result normal?

YES - GO TO 13.

NO - Follow the See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic

Overview/Basic Inspection.

13.CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect corresponding A/F sensor 1 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

5. Check the continuity between A/F sensor 1 harness connector or ECM harness connector and ground.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 664

3. Disconnect battery negative cable (1).

Black arrow: To body ground

4. Install jumper cable (A) between battery negative terminal and body ground.

5. Turn ignition switch ON.

6. Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES - INSPECTION END

NO - Replace battery negative cable assembly.

P1554

P1554 BATTERY CURRENT SENSOR

Description

The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the

power generation of the generator. The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures the

charging/discharging current of the battery. Based on the sensor signal, ECM judges whether or not the power generation voltage variable control

is performed. When performing the power generation voltage variable control, ECM calculates the target power generation voltage based on the

sensor signal. And ECM sends the calculated value as the power generation command value to IPDM E/R. For the details of the power generation

voltage variable control, See: Starting and Charging/Charging System/Description and Operation.

CAUTION:

Never connect the electrical component or the ground wire directly to the battery terminal. The connection causes the malfunction of the

power generation voltage variable control, and then battery discharge may occur.

Tuesday, September 24, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 817

DTC Logic

Diagnosis Procedure

1.PERFORM THE SELF-DIAGNOSIS

1. Delete the self-diagnosis results. Turn ignition switch OFF.

2. Turn ignition switch ON. Perform the self-diagnosis again.

3. Check that the DTC is detected again.

Is any DTC detected?

YES - Replace AV control unit.

NO - The intermittent malfunction caused by strong radio interference can be detected.

Without Mobile Entertainment System

U1205 GPS

Description

Replace the AV control unit if this DTC is displayed. See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/AV Control Unit/Exploded View/Without Mobile Entertainment System.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 629

1. Replace malfunctioning electric throttle control actuator.

2. Go to See: P Code Charts/P1226.

- INSPECTION END

Special Repair Requirement

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Throttle Valve Closed

Position Learning/Special Repair Requirement

- GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Testing and Inspection/Programming and

Relearning/Special Repair Requirement

- END

P1236

P1236, P2118 THROTTLE CONTROL MOTOR

Description

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The current opening angle of the throttle valve is detected by the throttle position sensor. The throttle position sensor provides feedback to the

ECM, when opens/closes the throttle valve in response to driving conditions via the throttle control motor.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 2 seconds.

2. Start engine and let it idle for 5 seconds.

3. Check DTC.

Is DTC detected?

YES - Go to See: P Code Charts/P1236.

Disclaimer2017 Infiniti G37 Sedan V6-3.7L Diagnostic and Repair Information # 13-013 Date: 130404

Cruise Control - Won't Set, DTC P0605 Stored in Memory

Classification:

EL13-009

Reference:

ITB13-013

Date:

April 4, 2013

CRUISE CONTROL WILL NOT SET AND DTC P0605 IS STORED

APPLIED VEHICLES:

All Infiniti 2009 and newer

SERVICE INFORMATION

Improper adjustment or operation of the ASCD brake switch can cause the Automatic Speed Control Device (ASCD) to "not set" and/or DTC P0605

(ECM) to store.

If a malfunction in the ASCD system is detected the CRUISE indicator may stay ON and the "SET" indicator may flash.

Before replacing the Engine Control Module (ECM) for a DTC P0605:

First check the ASCD brake switch for proper operation and adjustment.

^ Refer to the appropriate Service Manual for ASCD brake switch operation and adjustment information.

^ Make sure the switch operates correctly.

^ Make sure the clearance gap of the switch is adjusted correctly.

If the ASCD brake switch is not the cause of the issue refer to the appropriate Service Manual for additional diagnostic and repair information.

Monday, September 23, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 549

YES - Go to See: P Code Charts/P0603.

NO - INSPECTION END

Wiring Diagram

Diagnosis Procedure

1.CHECK ECM POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 571

DTC CONFIRMATION PROCEDURE

CAUTION:

- Always drive vehicle at a safe speed.

- Be careful not to rev engine into the red zone on the tachometer.

1.PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before

performing the next test.

- GO TO 2.

2.CHECK DTC DETECTION

With CONSULT-III

1. Start the engine.

2. Shift the selector lever to manual shift gate side.

3. Start up in M1, and then upshift to M2.

4. Accelerate to approximately 40 km/h (25 MPH) in M2.

5. Perform "Self Diagnostic Results" in "TRANSMISSION".

With GST

Follow the procedure "With CONSULT-III".

Is "P0720" detected?

YES - Go to See: P Code Charts/P0720/7AT RE7R01A.

NO - INSPECTION END

Diagnosis Procedure

1.CHECK INTERMITTENT INCIDENT

See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Perform Efficient Diagnosis For an Electrical Incident.

Is the inspection result normal?

YES - Replace A/T assembly. See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service and Repair/Removal and

Replacement/7AT RE7R01A/Transmission Assembly/Exploded View.

NO - Repair or replace damaged parts.

5AT RE5R05A

P0725 ENGINE SPEED

Description

The engine speed signal is sent from the ECM to the TCM.

CONSULT-III Reference Value in Data Monitor Mode

Sunday, September 22, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 734

1. Turn ignition switch OFF.

2. Disconnect electric throttle control actuator harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 10.

NO - Repair or replace malfunctioning part.

10.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct.

2. Check if foreign matter is caught between the throttle valve (1) and the housing.

Is the inspection result normal?

YES - GO TO 11.

NO - Remove the foreign matter and clean the electric throttle control actuator inside.

11.CHECK THROTTLE CONTROL MOTOR

See: P Code Charts/P1233.

Is the inspection result normal?

YES - GO TO 12.

NO - GO TO 13.

12.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

Is the inspection result normal?

YES - GO TO 13.

NO - Repair or replace harness or connectors.

13.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace malfunction electric throttle control actuator.

2. Go to See: P Code Charts/P1233.

- INSPECTION END

Component Inspection

1.CHECK THROTTLE CONTROL MOTOR

1. Turn ignition switch OFF.

2. Disconnect electric throttle control actuator harness connector.

3. Check resistance between electric throttle control actuator terminals as per the following.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 357

2. Listen to each fuel injector operating sound.

Clicking sound should be heard.

Is the inspection result normal?

YES - GO TO 7.

NO - Perform trouble diagnosis for FUEL INJECTOR, See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and

Inspection/Component Tests and General Diagnostics/Diagnosis Procedure.

7.CHECK FUEL INJECTOR

1. Remove fuel injector assembly. See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Rail/Service and Repair/Removal and

Installation.

Keep fuel hose and all fuel injectors connected to fuel tube.

2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.

3. Disconnect all fuel injector harness connectors.

4. Disconnect all ignition coil harness connectors.

5. Prepare pans or saucers under each fuel injector.

6. Crank engine for approximately 3 seconds.

Check that fuel does not drip from fuel injector.

Is the inspection result normal?

YES - GO TO 8.

NO - Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one.

8.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

P0174

P0171, P0174 FUEL INJECTION SYSTEM FUNCTION

DTC Logic

DTC DETECTION LOGIC

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on

the mixture ratio feedback signal from air fuel ratio (A/F) sensor 1. The ECM calculates the necessary compensation to correct the offset between

the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (the actual mixture ratio is too lean), the

ECM judges the condition as the fuel injection system malfunction and illuminates the MIL (2 trip detection logic).

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 401

4. Turn ignition switch ON.

5. Set selector lever position to D.

6. Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 2.

2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace malfunctioning electric throttle control actuator.

2. Go to See: P Code Charts/P0122.

- INSPECTION END

Special Repair Requirement

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Throttle Valve Closed

Position Learning/Special Repair Requirement

- GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Testing and Inspection/Programming and

Relearning/Special Repair Requirement

- END

P0228

P0122, P0123, P0227, P0228 TP SENSOR

Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle

valve movement.

The throttle position sensor has two sensors. These sensors are a kind of potentiometer which transform the throttle valve position into output

voltage, and emit the voltage signal to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and controls

the throttle valve opening angle in response to driving conditions via the throttle control motor.

Saturday, September 21, 2019

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2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 825

DTC Logic

Without Mobile Entertainment System

U1219 AV CONTROL UNIT

Description

Replace the AV control unit if this DTC is displayed. See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/AV Control Unit/Exploded View/Without Mobile Entertainment System.

DTC Logic

With Mobile Entertainment System

Friday, September 20, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 10

ECM P1610-P1614

Intelligent Key Unit B2013

DTC INDEX

INTELLIGENT KEY UNIT B2013

Intelligent Key Unit B2013

Intelligent Key Unit B2551-B2563

DTC INDEX

INTELLIGENT KEY UNIT B2551 - B2563

Intelligent Key Unit B2551-B2563

Intelligent Key Unit B2590

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 14

DTC Index B1001-B1015

B1017-B1031

DTC INDEX

B1017-B1031

DTC Index B1017-B1031

B1033-B1047

DTC INDEX

B1033-B1047

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 254

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A

1. Start engine and warm it up to normal operating temperature.

2. Let it idle for 2 minutes.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0130.

NO-1 - With CONSULT-III: GO TO 3.

NO-2 - With GST: GO TO 7.

3.CHECK A/F SENSOR 1 FUNCTION

With CONSULT-III

1. Start engine and warm it up to normal operating temperature.

2. Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-III.

3. Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication.

Does the indication fluctuate around 2.2 V?

YES - GO TO 4.

NO - Go to See: P Code Charts/P0130.

4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-I

1. Select "A/F SEN1 (B1) P1276" (for DTC P0130) or "A/F SEN1 (B2) P1286" (for DTC P0150) of "A/F

SEN1" in "DTC WORK SUPPORT" mode with CONSULT-III.

2. Touch "START".

3. When the following conditions are met, "TESTING" will be displayed on the CONSULT-III screen.

Is "TESTING" displayed on CONSULT-III screen?

YES - GO TO 5.

NO - Check A/F sensor 1 function again. GO TO 3.

5.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-II

Release accelerator pedal fully.

NOTE:

Never apply brake when releasing the accelerator pedal.

Which does "TESTING" change to?

COMPLETED-GO TO 6.

OUT OF CONDITION-Retry DTC CONFIRMATION PROCEDURE. GO TO 4.

6.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III

Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III screen?

YES - INSPECTION END

NO - Go to See: P Code Charts/P0130.

Thursday, September 19, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 301

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor. The sensor element of the A/F sensor 1 is composed an electrode layer,

which transports ions. It has a heater in the element.

The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a

clear, continuous signal throughout a wide range.

The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative

oxygen density in lean. Also this current relative hydrocarbon density in rich.

Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to

ensure the required operating temperature of approximately 800锟紺 (1,472锟紽).

DTC Logic

DTC DETECTION LOGIC

To judge malfunctions, the diagnosis checks that the air fuel ratio (A/F) signal computed by ECM from the A/F sensor 1 signal fluctuates

according to fuel feedback control.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A

1. Start engine and warm it up to normal operating temperature.

2. Let it idle for 2 minutes.

3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0130.

NO-1 - With CONSULT-III: GO TO 3.

NO-2 - With GST: GO TO 7.

3.CHECK A/F SENSOR 1 FUNCTION

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 704

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

- Always drive vehicle at a safe speed.

- Be careful not to rev engine into the red zone on the tachometer.

1.PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before

performing the next test.

- GO TO 2.

2.CHECK DTC DETECTION

With CONSULT-III

1. Start the engine.

2. Shift the selector lever to manual shift gate side.

3. Start up in M1, and then upshift to M2.

4. Accelerate to approximately 40 km/h (25 MPH) in M2.

5. Perform "Self Diagnostic Results" in "TRANSMISSION".

Is "P1721" detected?

YES - Go to See: P Code Charts/P1721/7AT RE7R01A.

NO - INSPECTION END

Diagnosis Procedure

1.CHECK DTC OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT).

With CONSULT-III

Perform "Self Diagnostic Results" in "ABS".

Is any DTC detected?

YES - Check DTC detected item. See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Scan

Tool Testing and Procedures/Trouble Diagnosis.

NO - GO TO 2.

2.CHECK DTC OF UNIFIED METER AND A/C AMP.

With CONSULT-III

Perform "Self Diagnostic Results" in "METER/M&A".

Is any DTC detected?

YES - Check DTC detected item. .

Wednesday, September 18, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 506

3. Turn ignition switch ON.

4. Check the voltage between EVAP canister vent control valve harness connector and ground.

Is the inspection result normal?

YES - GO TO 5.

NO - GO TO 4.

4.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors B4, E106

- Harness connectors B66, B436

- Harness connectors B171, B469

- Harness for open or short between EVAP canister vent control valve and IPDM E/R

- Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between EVAP canister vent control valve harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors B171, B469

- Harness connectors B418, M66

- Harness for open or short between EVAP canister vent control valve and ECM

- Repair open circuit, short to ground or short to power in harness or connectors.

7.CHECK RUBBER TUBE FOR CLOGGING

1. Disconnect rubber tube connected to EVAP canister vent control valve.

2. Check the rubber tube for clogging.

Is the inspection result normal?

YES - GO TO 8.

NO - Clean the rubber tube using an air blower.

8.CHECK EVAP CANISTER VENT CONTROL VALVE

See: P Code Charts/P0447.

Is the inspection result normal?

YES - GO TO 9.

NO - Replace EVAP canister vent control valve.

9.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.CHECK EVAP CANISTER VENT CONTROL VALVE-I

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 381

Diagnosis Procedure

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connections M16, M70. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component

Tests and General Diagnostics/Power Supply and Ground Circuit.

Is the inspection result normal?

YES - GO TO 2.

NO - Repair or replace ground connections.

2.CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR POWER SUPPLY CIRCUIT

1. Disconnect EOT sensor harness connector.

2. Turn ignition switch ON.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 384

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and wait at least 5 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0197.

Tuesday, September 17, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 243

DTC Logic

DTC DETECTION LOGIC

NOTE:

If DTC P0122, P0123, P0227 or P0228 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. See: P Code

Charts/P0643.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 1 second.

2. Check DTC.

Is DTC detected?

YES - Go to See: P Code Charts/P0122.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 563

4.CHECK SUB-HARNESS

1. Remove control valve with TCM. See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair.

2. Disconnect transmission range switch connector and TCM connector.

3. Check continuity between transmission range switch switch connector (A) terminals and TCM connector (B) terminals.

4. If OK, check harness for short to ground and short to power.

5. Reinstall any part removed.

OK or NG

OK - Replace the control valve with TCM. See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair.

NG - Replace open circuit or short to ground and short to power in harness or connectors.

5.CHECK DTC

Perform See: P Code Charts/P0705/5AT RE5R05A.

OK or NG

OK - INSPECTION END

NG - GO TO 2.

7AT RE7R01A

P0705 TRANSMISSION RANGE SWITCH A

Description

- The transmission range switch detects the selector lever position and transmits a signal to the TCM.

Monday, September 16, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 111

DTC Logic

DTC DETECTION LOGIC

NOTE:

If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform the trouble diagnosis for

DTC P0075, P0081. See: P Code Charts/P0075.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 10 V and 16 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT-III

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.

2. Start engine and warm it up to the normal operating temperature.

3. Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady as possible.

4. Let engine idle for 10 seconds.

5. Check 1st trip DTC.

With GST

Follow the procedure "With CONSULT-III" above.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0011

NO - GO TO 3.

3.PERFORM DTC CONFIRMATION PROCEDURE-II

With CONSULT-III

1. Select "DATA MONITOR" mode with CONSULT-III.

2. Maintain the following conditions for at least 20 consecutive seconds.

3. Check 1st trip DTC.

With GST

Follow the procedure "With CONSULT-III" above.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0011

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 558

Diagnosis Procedure

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connections M16, M70. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component

Tests and General Diagnostics/Power Supply and Ground Circuit.

Is the inspection result normal?

YES - GO TO 2.

NO - Repair or replace ground connections.

2.CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect APP sensor harness connector.

2. Turn ignition switch ON.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 142

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for at least 10 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0031.

Sunday, September 15, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 446

Diagnosis Procedure

1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connections M16, M70. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component

Tests and General Diagnostics/Power Supply and Ground Circuit.

Is the inspection result normal?

YES - GO TO 2.

NO - Repair or replace ground connections.

2.CHECK KNOCK SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Disconnect knock sensor harness connector and ECM harness connector.

2. Check the continuity between knock sensor harness connector and ECM harness connector.

3. Also check harness for short to ground and short to power.

Is the inspection result normal?

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 842

Is the inspection result normal?

YES - GO TO 2.

NO - Repair harness or connector.

2.CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector.

2. Turn ignition switch ON.

3. Check voltage between AV control unit harness connector terminal 40 and ground.

40 - Ground: Approx. 5 V

Is the inspection result normal?

YES - Replace camera control unit.

NO - Replace AV control unit.

U1255

U1255 SATELLITE RADIO TUNER

Description

DTC Logic

Diagnosis Procedure

1.CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT

Check satellite radio tuner power supply and ground circuits. See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Testing

and Inspection/Component Tests and General Diagnostics/Power Supply and Ground Circuit/Satellite Radio Tuner.

Is the inspection result normal?

YES - GO TO 2.

NO - Repair malfunctioning parts.

2.CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector and satellite radio tuner connector.

3. Check continuity between AV control unit harness connector terminals 28, 29, 30 and satellite radio tuner harness connector terminals 8, 9,

10.

28 - 8: Continuity should exist.

29 - 9: Continuity should exist.

30 - 10: Continuity should exist.

4. Check continuity between AV control unit harness connector terminals 28, 29, 30 and ground.

28 - Ground: Continuity should not exist.

29 - Ground: Continuity should not exist.

30 - Ground: Continuity should not exist.

Is the inspection result normal?

YES - GO TO 3.

NO - Repair harness or connector.

3.CHECK AV CONTROL UNIT VOLTAGE

1. Connect AV control unit connector.

2. Turn ignition switch ON.

Saturday, September 14, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 800

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds.

2. Check DTC.

Is DTC detected?

YES - See: U Code Charts/U0164.

NO - INSPECTION END

Wiring Diagram

Diagnosis Procedure

Go to See: Powertrain Management/Computers and Control Systems/Information Bus/Application and ID/CAN System Specification Chart.

U0401

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

U0401 ECM CAN CIR1

1.PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

1. Perform self-diagnosis.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 405

Is the inspection result normal?

YES - GO TO 3.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

3.CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 4.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between electric throttle control actuator harness connector and ECM harness connector.

2. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK THROTTLE POSITION SENSOR

See: P Code Charts/P0122.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace malfunctioning electric throttle control actuator.

2. Go to See: P Code Charts/P0122.

- INSPECTION END

7.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.CHECK THROTTLE POSITION (TP) SENSOR

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Perform See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Throttle Valve

Closed Position Learning/Special Repair Requirement.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 645

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and wait at least 10 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P1550.

Friday, September 13, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 345

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 4.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

3. Also check harness for short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK HEATED OXYGEN SENSOR 2

See: P Code Charts/P0139.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace malfunctioning heated oxygen sensor 2.

CAUTION:

- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a

concrete floor; use a new one.

- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

- INSPECTION END

7.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.INSPECTION START

Will CONSULT-III be used?

YES - GO TO 2.

NO - GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2 (HO2S2)

With CONSULT-III

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.

2. Start engine and warm it up to the normal operating temperature.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 539

YES - INSPECTION END

NO - Go to See: P Code Charts/P0461.

Component Function Check

1.PRECONDITIONING

WARNING:

When performing the following procedure, always observe the handling of the fuel. See: Powertrain Management/Fuel Delivery and Air

Induction/Fuel Tank/Service and Repair/Component.

TESTING CONDITION:

Before starting component function check, preparation of draining fuel and refilling fuel is required.

Will CONSULT-III be used?

YES - GO TO 2.

NO - GO TO 3.

2.PERFORM COMPONENT FUNCTION CHECK

With CONSULT-III

NOTE:

Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8 Imp gal) in advance.

1. Prepare a fuel container and a spare hose.

2. Release fuel pressure from fuel line, See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Fuel

Pressure/Testing and Inspection.

3. Remove the fuel feed hose on the fuel level sensor unit.

4. Connect a spare fuel hose where the fuel feed hose was removed.

5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.

6. Select "FUEL LEVEL SE" in "DATA MONITOR" mode with CONSULT-III.

7. Check "FUEL LEVEL SE" output voltage and note it.

8. Select "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT-III.

9. Touch "ON" and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it.

10. Check "FUEL LEVEL SE" output voltage and note it.

11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).

12. Check "FUEL LEVEL SE" output voltage and note it.

13. Confirm whether the voltage changes more than 0.03 V during step 7 to 10 and 10 to 12.

Is the inspection result normal?

YES - INSPECTION END

NO - Go to See: P Code Charts/P0461.

3.PERFORM COMPONENT FUNCTION CHECK

Without CONSULT-III

NOTE:

Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8

Imp gal) in advance.

1. Prepare a fuel container and a spare hose.

2. Release fuel pressure from fuel line. See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Fuel

Pressure/Testing and Inspection.

3. Remove the fuel feed hose on the fuel level sensor unit.

4. Connect a spare fuel hose where the fuel feed hose was removed.

5. Turn ignition switch ON.

6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.

7. Confirm that the fuel gauge indication varies.

8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).

9. Confirm that the fuel gauge indication varies.

Is the inspection result normal?

YES - INSPECTION END

NO - Go to See: P Code Charts/P0461.

Diagnosis Procedure

1.CHECK DTC WITH "UNIFIED METER AND A/C AMP."

Is the inspection result normal?

YES - GO TO 2.

NO - Go to See: Instrument Panel, Gauges and Warning Indicators/Testing and Inspection/Component Tests and General

Diagnostics/Combination Meter/Fuel Level Sensor Signal Inspection.

2.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

P0462

P0462, P0463 FUEL LEVEL SENSOR

Thursday, September 12, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 508

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 3.

3.CHECK EVAP CANISTER VENT CONTROL VALVE-III

With CONSULT-III

1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.

2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.

3. Check air passage continuity and operation delay time.

Check that new O-ring is installed properly.

Without CONSULT-III

1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.

2. Check air passage continuity and operation delay time under the following conditions.

Check that new O-ring is installed properly.

Is the inspection result normal?

YES - INSPECTION END

NO - Replace EVAP canister vent control valve

P0448

P0448 EVAP CANISTER VENT CONTROL VALVE

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 353

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE-I

1. Clear the mixture ratio self-learning value. See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Programming and Relearning/Mixture Ratio Self - Learning Value Clear/Special Repair Requirement.

2. Start engine.

Is it difficult to start engine?

YES - GO TO 3.

NO - GO TO 4.

3.RESTART ENGINE

If it is difficult to start engine, the fuel injection system has a malfunction, too.

Crank engine while depressing accelerator pedal.

Does the engine start?

YES - Go to See: P Code Charts/P0172.

NO - Remove spark plugs and check for fouling, etc.

4.PERFORM DTC CONFIRMATION PROCEDURE-II

1. Keep engine idle for at least 5 minutes.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0172.

NO - GO TO 5.

5.PERFORM DTC CONFIRMATION PROCEDURE-III

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Start engine.

5. Maintain the following conditions for at least 10 consecutive minutes. Hold the accelerator pedal as steady as possible.

6. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0172.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 17

DTC Index B1113-B1127

B1129-B1143

DTC INDEX

B1129-B1143

DTC Index B1129-B1143

B1145-B1210

DTC INDEX

B1145-B1210

Wednesday, September 11, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 822

WITH NAVIGATION : DTC Logic

With Mobile Entertainment System

U1216 AV CONTROL UNIT

Description

Replace the AV control unit if this DTC is displayed. See: Accessories and Optional Equipment/Radio, Stereo, and Compact

Disc/Radio/Stereo/Service and Repair/AV Control Unit/Exploded View/With Mobile Entertainment System.

DTC Logic

Without Mobile Entertainment System

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 101

OK - GO TO 18.

NG - GO TO 20.

18.PERFORM ECM SELF-DIAGNOSIS

With CONSULT-III

1. Perform "ENGINE"self-diagnosis. See: Diagnostic Trouble Code Descriptions/DTC Index/EC (for VQ35HR) or , "CONSULT-III

Function" (for VK45DE).

2. Check if malfunction is indicated.

Is malfunction indicated?

YES - 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

NO - GO TO 19.

19.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

With CONSULT-III

1. Perform "ABS" self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Scan

Tool Testing and Procedures/Trouble Diagnosis.

2. Check if malfunction is indicated.

Is malfunction indicated?

YES - 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

20.CHECK STOP LAMP SWITCH INSTALLATION AND ADJUSTMENT

Check stop lamp switch for proper installation, and adjust the switch if necessary. See: Brakes and Traction Control/Brake Pedal Assy/Service

and Repair/Inspection and Adjustment See: Brakes and Traction Control/Brake Pedal Assy/Service and Repair/Removal and Installation.

OK or NG

OK - GO TO 21.

NG - 1. Adjust stop lamp switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

21.CHECK STOP LAMP SWITCH

Check stop lamp switch. See: Cruise Control/Testing and Inspection/Component Tests and General Diagnostics/ICC Brake Switch and Stop

Lamp Switch.

OK or NG

OK - GO TO 22.

NG - 1. Replace stop lamp switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

22.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch connector.

3. Turn ignition switch ON.

4. Check voltage between stop lamp switch harness connector and ground.

OK or NG

OK - GO TO 23.

NG - 1. Repair or replace harness or fuse.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

23.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT

(CONTROL UNIT)

1. Turn ignition switch OFF.

2. Disconnect ABS actuator and electric unit (control unit) connector.

Tuesday, September 10, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 327

5. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES - GO TO 4.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S2 harness connector and ECM harness connector.

2. Check the continuity between HO2S2 harness connector or ECM harness connector and ground.

3. Also check harness for short to power.

Is the inspection result normal?

YES - GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

5.CHECK HEATED OXYGEN SENSOR 2

See: P Code Charts/P0137.

Is the inspection result normal?

YES - GO TO 7.

NO - GO TO 6.

6.REPLACE HEATED OXYGEN SENSOR 2

Replace malfunctioning heated oxygen sensor 2.

CAUTION:

- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a

concrete floor; use a new one.

- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

- INSPECTION END

7.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.INSPECTION START

Will CONSULT-III be used?

YES - GO TO 2.

NO - GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2 (HO2S2)

With CONSULT-III

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.

2. Start engine and warm it up to the normal operating temperature.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 170

YES - INSPECTION END

NO - GO TO 2.

2.REPLACE EXHAUST VALVE TIMING CONTROL MAGNET RETARDER

1. Replace malfunctioning exhaust valve timing control magnet retarder.

2. Perform See: Engine, Cooling and Exhaust/Engine/Timing Components/Variable Valve Timing/Testing and Inspection/Special Repair

Requirement.

- INSPECTION END

P0081

P0075, P0081 IVT CONTROL SOLENOID VALVE

Description

Intake valve timing control solenoid valve is activated by ON/OFF pulse duty (ratio) signals from the ECM.

The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil

flow.

The longer pulse width advances valve timing.

The shorter pulse width retards valve timing.

When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 5 seconds.

2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P0075.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 192

NO - GO TO 3.

3.CHECK MAF SENSOR-II

With CONSULT-III

1. Repair or replace malfunctioning part.

2. Start engine and warm it up to normal operating temperature.

3. Connect CONSULT-III and select "DATA MONITOR" mode.

4. Select "MAS A/F SE-B1" and "MAS A/F SE-B2", and check the indication.

Without CONSULT-III

1. Repair or replace malfunctioning part.

2. Start engine and warm it up to normal operating temperature.

3. Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 4.

4.CHECK MAF SENSOR-III

With CONSULT-III

1. Turn ignition switch OFF.

2. Disconnect MAF sensor harness connector and reconnect it again.

3. Start engine and warm it up to normal operating temperature.

4. Connect CONSULT-III and select "DATA MONITOR" mode.

5. Select "MAS A/F SE-B1" and "MAS A/F SE-B2", and check the indication.

Monday, September 9, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 323

10. Select "HO2S2 (B1) P1147" (for DTC P0137) or "HO2S2 (B2) P1167" (for DTC P0157) of "HO2S2" in

"DTC WORK SUPPORT" mode with CONSULT-III.

11. Follow the instruction of CONSULT-III display.

NOTE:

It will take at most 10 minutes until "COMPLETED" is displayed.

12. Touch "SELF-DIAG RESULTS".

Which is displayed on CONSULT-III screen?

OK - INSPECTION END

NG - Go to See: P Code Charts/P0137.

CANNOT BE DIAGNOSED-GO TO 3.

3.PERFORM DTC CONFIRMATION PROCEDURE AGAIN

1. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).

2. Perform DTC confirmation procedure again.

- GO TO 2.

4.PERFORM COMPONENT FUNCTION CHECK

With GST

Perform component function check. See: P Code Charts/P0137.

NOTE:

Use component function check to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st trip DTC might not be

confirmed.

Is the inspection result normal?

YES - INSPECTION END

NO - Go to See: P Code Charts/P0137.

Component Function Check

1.PERFORM COMPONENT FUNCTION CHECK-I

With GST

1. Start engine and warm it up to the normal operating temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

6. Let engine idle for 1 minute.

7. Check the voltage between ECM harness connector terminals under the following condition.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 2.

2.PERFORM COMPONENT FUNCTION CHECK-II

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 291

Component Inspection

1.INSPECTION START

Will CONSULT-III be used?

YES - GO TO 2.

NO - GO TO 3.

2.CHECK HEATED OXYGEN SENSOR 2 (HO2S2)

With CONSULT-III

1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.

2. Start engine and warm it up to the normal operating temperature.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

5. Let engine idle for 1 minute.

6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-III.

7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to ?5%.

"HO2S2 (B1)/(B2)" should be above 0.70 V at least once when the "FUEL INJECTION" is +25%.

"HO2S2 (B1)/(B2)" should be below 0.18 V at least once when the "FUEL INJECTION" is -25%.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 6.

3.CHECK HEATED OXYGEN SENSOR 2-I

Without CONSULT-III

1. Start engine and warm it up to the normal operating temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

4. Let engine idle for 1 minute.

5. Check the voltage between ECM harness connector terminals under the following condition.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 4.

4.CHECK HEATED OXYGEN SENSOR 2-II

Sunday, September 8, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 761

4. Check the voltage ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES - INSPECTION END

NO - GO TO 2.

2.REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace accelerator pedal assembly.

2. Go to See: P Code Charts/P2138.

- INSPECTION END

Special Repair Requirement

1.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

See: Powertrain Management/Computers and Control Systems/Accelerator Pedal Position Sensor/Testing and Inspection/Special Repair

Requirement.

- GO TO 2.

2.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Throttle Valve Closed

Position Learning/Special Repair Requirement.

- GO TO 3.

3.PERFORM IDLE AIR VOLUME LEARNING

See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Testing and Inspection/Programming and

Relearning/Special Repair Requirement.

- END

P2132

P0222, P0223, P2132, P2133 TP SENSOR

Description

Electric throttle control actuator consists of throttle control motor, throttle position (TP) sensor, etc. The throttle position sensor responds to the

throttle valve movement.

The throttle position sensor has two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output

voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the

voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the

ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 619

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

- GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Check 1st trip DTC.

Is 1st trip DTC detected?

YES - Go to See: P Code Charts/P1225.

NO - INSPECTION END

Diagnosis Procedure

1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct.

3. Check if foreign matter is caught between the throttle valve (1) and the housing.

Is the inspection result normal?

YES - GO TO 2.

NO - Remove the foreign matter and clean the electric throttle control actuator inside.

2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace malfunctioning electric throttle control actuator.

2. Go to See: P Code Charts/P1225.

- INSPECTION END

Special Repair Requirement

1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Throttle Valve Closed

Position Learning/Special Repair Requirement

- GO TO 2.

2.PERFORM IDLE AIR VOLUME LEARNING

See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Idle Speed/Testing and Inspection/Programming and

Relearning/Special Repair Requirement

- END

P1226

P1226, P1235 TP SENSOR

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 502

Is the inspection result normal?

YES - GO TO 3.

NO - GO TO 2.

2.DETECT MALFUNCTIONING PART

Check the following.

- Harness connectors E108, M15

- Harness connectors F102, M72

- Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R

- Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

- Repair open circuit, short to ground or short to power in harness or connectors.

3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and

ECM harness connector.

4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES-1 - With CONSULT-III: GO TO 4.

YES-2 - Without CONSULT-III: GO TO 5.

NO - Repair open circuit, short to ground or short to power in harness or connectors.

4.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1. Reconnect all harness connectors disconnected.

2. Start engine.

3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed varies according to the valve

opening.

Does engine speed vary according to the valve opening?

YES - GO TO 6.

NO - GO TO 5.

5.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

See: P Code Charts/P0444.

Is the inspection result normal?

YES - GO TO 6.

NO - Replace EVAP canister purge volume control solenoid valve.

6.CHECK INTERMITTENT INCIDENT

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble

Diagnosis For Intermittent Incident/Description.

- INSPECTION END

Component Inspection

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4. Turn ignition switch ON.

5. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.

Saturday, September 7, 2019

2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 722

2.CHECK MANUAL MODE SWITCH CIRCUIT

With CONSULT-III

1. Turn ignition switch ON.

2. Select "DATA MONITOR" in "TRANSMISSION".

3. Read out ON/OFF switching action of "MANU MODE SW", "NON M-MODE SW", "UP SW LEVER", "DOWN SW LEVER". See: P

Code Charts/P1815/5AT RE5R05A.

Without CONSULT-III

Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when the

selector lever is shifted to the "+ (up)" or "- (down)" side (1GR - 5GR).

OK or NG

OK - GO TO 4.

NG - GO TO 3.

3.DETECT MALFUNCTIONING ITEM

Check the following.

- Manual mode switch. See: P Code Charts/P1815/5AT RE5R05A.

- Pin terminals for damage or loose connection with harness connector.

- Open circuit or short to ground or short to power in harness or connector for A/T shift selector (manual mode switch).

- Harness for short or open between unified meter and A/C amp. and A/T shift selector.

- Unified meter and A/C amp. See: Instrument Panel, Gauges and Warning Indicators/Description and Operation/Combination Meter/System

Description.

OK or NG

OK - GO TO 4.

NG - Repair or replace damaged parts.

4.CHECK DTC

Perform See: P Code Charts/P1815/5AT RE5R05A.

OK or NG

OK - INSPECTION END

NG - GO TO 5.

5.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. See: Diagrams/Electrical Diagrams/Transmission Control Systems/5AT RE5R05A/Main Power

Supply and Ground Circuit.

OK or NG

OK - GO TO 6.

NG - Repair or replace damaged parts.

6.DETECT MALFUNCTIONING ITEM

Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

OK or NG

OK - Replace the control valve with TCM. See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair.

NG - Repair or replace damaged parts.

Component Inspection

MANUAL MODE SWITCH

Check continuity between A/T shift selector connector terminals.