Diagnostic Procedure

1. Turn ignition switch to "OFF" position. (Do not start engine.)
2. Check voltage between TCM terminal and ground.

Fig 1: Connector Terminal Voltage Table

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking TCM Power Source Step 1

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG? 

1. OK : GO TO 2.
2. NG : GO TO  3.

1. Turn ignition switch to "ON" position.
2. Check voltage between TCM terminal and ground.

Fig 3: Connector Terminal Voltage Table

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking TCM Power Source Step 2

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG? 

1. OK : GO TO  4.
2. NG : GO TO 3.

Check the following items:

• Harness for short or open between battery and TCM terminal 9 (Main harness)
• Harness for short or open between ignition switch and TCM terminals 2, 3, 12, 33 and 42 (Main harness)
• Ignition switch and 10A fuse [No. 32 or 35, located in the fuse block (J/B)]

  Refer to FUSES & CIRCUIT BREAKERS .

• Ignition switch, Refer to POWER DISTRIBUTION .
• A/T PV IGN relay and ECM relay.

OK or NG? 

1. OK : GO TO 4.
2. NG : Repair or replace damaged parts.

1. Turn ignition switch to "OFF" position.
2. Disconnect TCM harness connector.
3. Check continuity between TCM terminals 5, 14, 24, 46 and ground.
   1. Continuity should exist. 

If OK, check harness for short to ground and short to power.

OK or NG? 

1. OK : GO TO 5.
2. NG : Repair open circuit or short to ground or short to power in harness or connectors.

Check again. Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG? 

1. OK : INSPECTION END
2. NG : GO TO 6.

1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

OK or NG? 

1. OK : INSPECTION END
2. NG :
   1. Repair or replace damaged parts.
   2. Replace the transmission assembly. Refer to "PRECAUTIONS FOR A/T ASSEMBLY REPLACEMENT ".