Diagnostic Procedure

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

CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch to ON position.
  (Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
  Voltage: Battery voltage
  
  OK or NG
1. OK: GO TO 2.
2. NG: GO TO 3.
  
  Fig 1: TCM Terminals 10, 19, 28 & Ground Voltage Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK TCM POWER SOURCE STEP 2
1. Turn ignition switch to OFF position.
2. Check voltage between TCM terminal 28 (Y/R) and ground.
  Voltage: Battery voltage
OK or NG
1. OK: GO TO 4.
2. NG: GO TO 3.
  
  Fig 2: TCM Terminal 28 (Y/R) & Ground Voltage Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Harness for short or open between ignition switch and TCM terminals 10, 19 and 28 (Main harness)
- Fuse
- Ignition switch
  Refer to "POWER SUPPLY ROUTING CIRCUIT ".
OK or NG
1. OK: GO TO 4.
2. NG: Repair or replace damaged parts.
CHECK TCM GROUND CIRCUIT
1. Turn ignition switch to OFF position.
  Disconnect TCM harness connector.
2. Check continuity between TCM terminals 25, 48 and ground. Refer to "WIRING DIAGRAM - AT - MAIN - AT-MAIN-01 ".
  Continuity should exist.
OK or NG
1. OK: INSPECTION END
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.