Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II. Refer to CONSULT-II FUNCTION (ENGINE) .
  
  Fig 1: CONSULT-II Display - SELECT SYSTEM
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 2.
- NG : Check the DTC detected item, go to DTC TABLE .
  - If CAN communication line is detected, go to DTC U1000 CAN COMMUNICATION LINE .
CHECK DTC WITH TCM
With CONSULT-II
1. Start engine.
2. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
  
  Fig 2: CONSULT-II Display - DATA MONITOR
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. While monitoring "ENGINE SPEED", check for engine speed change corresponding to "ACCELE ANGLE".
OK or NG
- OK : GO TO 3.
- NG : Check the ignition signal circuit.
  - Refer to IGNITION SIGNAL .
CHECK DTC
Perform "DTC Confirmation Procedure". Refer to DTC CONFIRMATION PROCEDURE .

OK or NG
- OK : INSPECTION END
- NG : GO TO 4.
CHECK TCM
1. Check TCM input/output signal. Refer to TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
- OK : INSPECTION END
- NG : Repair or replace damaged parts.