Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK PNP SW CIRCUIT
WITH CONSULT-II
- Turn ignition switch "ON". (Do not start engine.)
- Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
- Check if correct selector lever position (N/P, R or D) is displayed as selector lever is moved into each position.
OK or NG
- OK: GO TO 5.
- NG: GO TO 2.
- CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Perform TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".
OK or NG
- OK: GO TO 3.
- NG: Repair or replace damaged parts.
- DETECT MALFUNCTIONING ITEM
Check the following items:
- 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.
- CHECK SUB-HARNESS
- Remove control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
- Disconnect park/neutral position switch connector and TCM connector.
- Check continuity between park/neutral position switch connector terminals and TCM connector terminals.
Courtesy of NISSAN MOTOR CO., U.S.A.
- If OK, check harness for short to ground and short to power.
- Reinstall any part removed.
OK or NG
- OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
- NG: Replace open circuit or short to ground and short to power in harness or connectors.
- CHECK DTC
Perform "DTC Confirmation Procedure".
- Refer to "DTC CONFIRMATION PROCEDURE ".
OK or NG
- OK: INSPECTION END
- NG: GO TO 2.