Diagnostic Procedure

CHECK INPUT SIGNALS
WITH CONSULT-II
1. Start engine.
2. Select "ECU INPUT SIGNALS" or "MAIN SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Accelerate vehicle in the "D" position (3rd --> 4th gear), and confirm the ON/OFF actuation of the "ATF PRES SW 3".
  
  Fig 1: Diagnostic Procedure With Consult-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
WITH GST

Follow the procedure "With CONSULT-II".

OK or NG
1. OK >> GO TO 4.
2. NG >> GO TO 2.
CHECK HARNESS BETWEEN TCM AND A/T UNIT ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch to "OFF" position.
2. Disconnect TCM connector.
3. Check continuity between A/T unit assembly harness connector and TCM connector.
  
  Fig 2: Identifying A/T Unit Assembly Harness Connector And TCM Connector Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Continuity Between A/T Unit Assembly Harness Connector And TCM Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. If OK, check harness for short to ground and short to power.
5. 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.
CHECK TERMINAL CORD ASSEMBLY
1. Remove oil pan. Refer to "CONTROL VALVE ASSEMBLY ".
2. Disconnect A/T unit assembly harness connector and control valve assembly harness connector.
3. Check continuity between A/T unit assembly harness connector and control valve assembly harness connector.
  
  Fig 4: Identifying Terminal Cord Assembly Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking Terminal Cord Assembly
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
1. OK >> Replace the control valve assembly. Refer to "CONTROL VALVE ASSEMBLY ".
2. NG >> Repair open circuit or short to ground or short to power in harness or connectors.
CHECK DTC
Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG
1. OK >> INSPECTION END
2. NG >> GO TO 5.
PERFORM TCM INSPECTION
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 >> Repair or replace damaged parts.