2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 594
On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- Diagnostic trouble code "P0745" with CONSULT-III or 4th judgment flicker without CONSULT-III is detected under the following
conditions.
- When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
- When TCM detects as irregular by comparing target value with monitor value.
Possible Cause
- Harness or connectors
(Solenoid circuit is open or shorted.)
- Line pressure solenoid valve
DTC Confirmation Procedure
NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before
performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select "SELF-DIAG RESULTS" in "TRANSMISSION".
3. Touch "START".
4. Engine start and wait for at least 5 seconds.
5. If DTC is detected, go to See: P Code Charts/P0745/5AT RE5R05A.
WITH GST
Follow the procedure "WITH CONSULT-III".
Diagnosis Procedure
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON.
2. Select "DATA MONITOR" in "TRANSMISSION".
3. Start engine.
4. Read out the value of "LINE PRES SOL" during driving. See: P Code Charts/P0745/5AT RE5R05A.
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/P0745/5AT RE5R05A.
OK or NG
OK - INSPECTION END
NG - GO TO 2.
7AT RE7R01A
P0745 PRESSURE CONTROL SOLENOID A
Description
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal transmitted from the
