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.

SELF-DIAGNOSIS
WITH CONSULT-II
1. Drive vehicle.
2. Stop vehicle and turn ignition switch "OFF".
3. Turn ignition switch "ON".
4. Select "SELF-DIAG RESULTS" mode for "A/T" with CONSULT-II.
  
  Fig 1: Display SELECT DIAG MODE Screen
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 2.
2. NG: Check low coast brake solenoid valve circuit and function. Refer to "DTC P1772 LOW COAST BRAKE SOLENOID VALVE ", "DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION ".
CHECK DTC
Perform "DTC Confirmation Procedure".
- Refer to "DTC CONFIRMATION PROCEDURE ".
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 3.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

OK or NG
1. OK: GO TO 4.
2. NG: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEM
Check the following items:
- The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
1. OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. NG: Repair or replace damaged parts.