2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 585
4. Drive vehicle and maintain the following conditions.
MANU MODE SW: ON
GEAR: "4" position
ACCELE POSI: 0.6/8 or more
VEHICLE SPEED: 10 km/h (6 MPH) or more
ENGINE SPEED: INPUT SPEED - 50 rpm or more
INPUT SPEED: 300 rpm or more
5. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from "OUT OF CONDITION" to
"TESTING".
CAUTION:
If "TESTING" does not appear on CONSULT-III for a long time, select "SELF-DIAG RESULTS". In case a 1st trip DTC other than
"P0734" is shown, refer to " Road Test".
- Perform See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/5AT
RE5R05A/Trouble Diagnosis/CONSULT-III Function (Transmission) when not shifted from the 1GR to 5GR. (Neither "OK" nor "NG" are
indicated.)
WITH GST
1. Start the engine.
2. Drive vehicle for approximately 5 minutes in urban areas.
3. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
Manual mode switch: ON
Gear position: "4" position
Accelerator opening: 0.6/8 or more
Vehicle speed: 10 km/h (6 MPH) or more
4. Check DTC. If DTC is detected, go to See: P Code Charts/P0734/5AT RE5R05A.
Diagnosis Procedure
1.CHECK CAN COMMUNICATION LINE
With CONSULT-III
- Select "SELF-DIAG RESULTS" in "TRANSMISSION".
Without CONSULT-III
- Perform the self-diagnosis. See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/5AT RE5R05A/Trouble Diagnosis/Diagnosis Procedure Without CONSULT-III.
Is a malfunction in the CAN communication indicated in the results?
YES - Check CAN communication line. See: U Code Charts/U1000/AT/5AT RE5R05A.
NO - GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. See: Powertrain Management/Transmission Control Systems/Testing and Inspection/Component
Tests and General Diagnostics/5AT RE5R05A/Main Power Supply and Ground Circuit.
OK or NG
OK - GO TO 3.
NG - Repair or replace damaged parts.
3.DETECT MALFUNCTION ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK - GO TO 4.
NG - Repair or replace damaged parts.
4.REPLACE CONTROL VALVE WITH TCM
1. Replace control valve with TCM. See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair.
2. Perform See: P Code Charts/P0734/5AT RE5R05A.
OK or NG
OK - INSPECTION END
NG - Confirm malfunction phenomena by "ROAD TEST" to repair malfunctioning part. See: Powertrain Management/Transmission Control
Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/5AT RE5R05A/Road Test.
7AT RE7R01A
P0734 4GR INCORRECT RATIO
Description
This malfunction is detected when the A/T does not shift into 4GR position as instructed by TCM. This is not only caused by electrical
malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.
