Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and TCM (Transmission Control Module) harness connector.
  
  Fig 1: Locating ECM
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Locating TCM
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check harness continuity between ECM terminal 26 and TCM terminal 5, ECM terminal 27 and TCM terminal 6, ECM terminal 35 and TCM terminal 7.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist.
OK or NG
1. OK: GO TO 3.
2. NG: GO TO 2.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M58, F28
- Harness for open or short between ECM and TCM (Transmission Control Module)
  1. : Repair open circuit or short to ground or short to power in harness or connectors.
CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR SHORT
1. Check harness continuity between ECM terminal 26 and engine ground, ECM terminal 27 and engine ground, ECM terminal 35 and engine ground.
  Refer to WIRING DIAGRAM .
  
  Continuity should not exist.
2. Also check harness for short to power.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 4.
DETECT MALFUNCTIONING PART
Check the harness for open or short between ECM and TCM (Transmission Control Module).
1. : Repair open circuit or short to ground or short to power in harness.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
1. : : INSPECTION END