2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 716
With GST
1. Start the engine.
2. Drive vehicle for approximately 5 minutes in urban areas.
Is ATF temperature within specified range?
YES - GO TO 3.
NO - Drive vehicle to warm ATF or stop engine to cool ATF.
3.CHECK SYMPTOM (PART 1)
With CONSULT-III
1. Select "7TH GR FNCTN P1734" in "DTC & SRT confirmation" in "TRANSMISSION".
2. Drive vehicle with manual mode and maintain the following conditions.
GEAR: 7
ACCELE POSI: 0.7/8 or more
VEHICLE SPEED: 10 km/h (7 MPH) or more
3. Keep the current driving status for 2 seconds or more if CONSULT-III screen changes from "OUT OF
CONDITION" to "TESTING".
CAUTION:
When "TESTING" is not indicated on CONSULT-III for a long time, check "Self Diagnostic Results" in "TRANSMISSION". When a
DTC other than "P1734" is detected, check the DTC. See: Diagnostic Trouble Code Descriptions/DTC Index/TCM.
With GST
1. Drive vehicle and maintain the following conditions for 2 seconds or more.
Selector lever: "M" position
Gear position: 7th
Accelerator pedal opening: 0.7/8 or more
Vehicle speed: 10 km/h (7 MPH) or more
2. Check DTC.
Is "OUT OF CONDITION", "STOP VEHICLE" or "COMPLETED RESULT NG" displayed? / Is "P1734" detected?
YES-1 - "OUT OF CONDITION": Perform "Step 3" again.
YES-2 - "STOP VEHICLE": GO TO 4.
YES-3 - "COMPLETED RESULT NG": Go to See: P Code Charts/P1734.
YES-4 - "P1734" is detected: Go to See: P Code Charts/P1734.
NO - Check intermittent incident. See: Testing and Inspection/Initial Inspection and Diagnostic Overview/How to Perform Efficient Diagnosis
For an Electrical Incident.
4.CHECK SYMPTOM (PART 2)
With CONSULT-III
1. Stop vehicle.
2. Drive vehicle in "D" position allowing it to shift from 1st to 7th gear and check shift timing and shift shock.
- 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.
P1805
P1805 BRAKE SWITCH
Description
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is being driven.
