Diagnostic Procedure

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

CHECK VALVE RESISTANCE
1. Turn ignition switch to OFF position.
  
  Fig 1: Checking Resistance Between Terminal Cord Assembly Harness Connector F30 Terminal 5 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal cord assembly harness connector F30 terminal 5 and ground.
  Resistance: 5 - 20Ω
OK or NG
1. OK: GO TO 3.
2. NG: GO TO 2.
CHECK VALVE OPERATION
1. Remove oil pan. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
  
  Fig 2: Checking Torque Converter Clutch Solenoid Valve Operation
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check the following items:
  - Torque converter clutch solenoid valve
    - Check solenoid valve by listening for its operating sound while applying battery voltage to the terminal and ground.
  - Harness of terminal cord assembly for short or open
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace damaged parts.
CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal cord assembly harness connector F30 terminal 5(G/B) and TCM harness connector E142 terminal 3(G/B). Refer to "WIRING DIAGRAM - AT-TCV ".
  Continuity should exist .
4. Reinstall any part removed.
OK or NG
1. OK: GO TO 4.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK DTC
Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE ".

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 5.
CHECK TCM INSPECTION
1. perform TCM input/output signal inspection. Refer to "TCM TERMINALS AND REFERENCE VALUE ".
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
1. OK: INSPECTION END
2. NG: Repair or replace damaged parts.