2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 715
Diagnosis Procedure
1.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select in "DATA MONITOR" in "TRANSMISSION".
3. Drive vehicle in the manual mode (1GR or 2GR), and confirm the ON/OFF actuation of the "ATF PRES
SW 2" and "ON OFF SOL". See: P Code Charts/P1774.
OK or NG
OK - GO TO 4.
NG - GO TO 2.
2.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 3.
NG - Repair or replace damaged parts.
3.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.
4.CHECK DTC
Perform See: P Code Charts/P1774.
OK or NG
OK - INSPECTION END
NG - GO TO 2.
P1734
P1734 7GR INCORRECT RATIO
Description
This malfunction is detected when the A/T does not shift into 7GR 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.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
- " See: P Code Charts/P1734" must be performed before starting "DTC CONFIRMATION PROCEDURE".
- Never perform "DTC CONFIRMATION PROCEDURE" before completing the repair, which may cause secondary malfunction.
- Always drive vehicle at a safe speed.
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 ATF TEMPERATURE
With CONSULT-III
1. Start the engine.
2. Select "ATF TEMP 1" in "Data Monitor" in "TRANSMISSION".
3. Check ATF temperature is in the following range.
ATF TEMP 1: 20锟斤拷C (68锟斤拷F) - 140锟斤拷C (284锟斤拷F)
