Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Is a malfunction in the CAN communication indicated in the results.

Yes or No
1. Yes: Check CAN communication line. Refer to DTC U1000 CAN COMMUNICATION LINE .
2. No: GO TO 2.
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 in ENGINE CONTROL SYSTEM - TITAN article in ENGINE PERFORMANCE.
With GST

Follow the procedure "With CONSULT-II".

OK or NG
1. OK: GO TO 3.
2. NG: Check the DTC detected item. Refer to SELF-DIAG RESULTS MODE in ENGINE CONTROL SYSTEM - TITAN article in ENGINE PERFORMANCE.
- If CAN communication line is detected, go to DTC U1000 CAN COMMUNICATION LINE .
CHECK DTC WITH TCM
With CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Depress accelerator pedal and read out the value of "ACCLE POS" and "THROTTLE POSI". Check engine speed changes according to throttle position.
4. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II. Refer to SELF-DIAG RESULTS MODE in ENGINE CONTROL SYSTEM - TITAN article in ENGINE PERFORMANCE.
  
  Fig 1: CONSULT-II Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
With GST

Follow the procedure "With CONSULT-II".

OK or NG
1. OK: GO TO 4.
2. NG: Repair or replace damaged parts.
  
  Fig 2: CONSULT-II Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DTC
Perform DTC Confirmation Procedure.
- Refer to DTC CONFIRMATION PROCEDURE .
OK or NG
1. OK: INSPECTION END
2. NG: Replace the transmission assembly. Refer to REMOVAL & INSTALLATION - TITAN article.