Diagnostic Procedure

1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 5 and ground.
   Fig 1: Checking Valve Resistance

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

OK or NG 

1. OK: GO TO 2.
2. NG:
   1. Remove oil pan. Refer to REMOVAL .
   2. Check the following items:
      • Torque converter clutch solenoid valve

        Refer to TORQUE CONVERTER CLUTCH SOLENOID VALVE .

      • Harness of terminal cord assembly for short or open

1. Turn ignition switch to OFF position.
2. Disconnect TCM harness connector F56.
3. Check continuity between terminal cord assembly F50 terminal 5 GY/R (Calif. CA Model) or Y/G (exc. Calif. CA Model) and TCM harness connector terminal 3 GY/R (Calif. CA Model) or Y/G (exc. Calif. CA Model).
   Fig 2: Checking Power Source Circuit

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

   Continuity should exist  .

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

4. Reinstall any part removed.

OK or NG 

1. OK: GO TO 3.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE .

OK or NG 

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