Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK TCM BATTERY POWER SUPPLY (BACK-UP) CIRCUIT
- Turn ignition switch OFF.
- Disconnect TCM connector.
- Check voltage between TCM harness connector terminals and ground.
TCM
-
Voltage
Connector
Terminal
F25
45
Ground
10 - 16 V
46
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- DETECT MALFUNCTIONING ITEMS
Check the following items:
- Open or short circuit of harness between battery positive terminal and TCM connector terminals 45, and 46.
- 10A fuse [No. 25, located in the fuse block (J/B)]. Refer to Terminal Arrangement .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Repair or replace malfunctioning parts.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
Is the inspection result normal?
YES
Replace the TCM. Refer to Removal and Installation .
NO
Repair or replace malfunctioning parts.