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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1056 (Automatic Transaxle Overhaul & Diagnostics) >> Re5F22A >> DTC P0797 Pressure Control Solenoid Valve C Stuck On >> Diagnostic Procedure

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.
  1. CHECK PRESSURE CONTROL SOLENOID VALVE C SIGNAL 

    With CONSULT-II 

    1. Start the engine.
    2. After warming up the engine and transaxle.
    3. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
    4. Read out the value of "PC SOL C OUT" and "PC SOL C MON"
      Fig 1: Monitor Item Condition Chart
      G00745997Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: CONSULT-II Display - Data Monitor
      G00745998Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Start the engine.
    2. Check pulse between TCM connector terminals 28 and 45.
      Fig 3: Connector Terminal Data Condition Chart
      G00745999Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 4: Checking Pulse Between TCM Connector Terminals 28 And 45
      G00746000Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  5.
    2. NG: GO TO 2.
  2. CHECK PRESSURE CONTROL SOLENOID VALVE C CIRCUIT 
    1. Turn ignition switch "OFF".
    2. Disconnect the TCM connector.
    3. Check resistance between TCM connector terminals 28 and 45.
      Fig 5: Connector Terminal Resistance Specification
      G00746001Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 6: Checking Resistance Between TCM Connector Terminals 28 And 45
      G00746002Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  5.
    2. NG: GO TO 3.
  3. CHECK PRESSURE CONTROL SOLENOID VALVE C 
    1. Turn ignition switch "OFF".
    2. Disconnect terminal cord assembly harness connector.
    3. Check resistance between terminals 2 and 5
      Fig 7: Connector Terminal Resistance Specification
      G00746003Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 8: Checking Resistance Between Terminals 2 And 5
      G00746004Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Reinstall any part removed.

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".
  4. CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE C 

    Check the following.

    • Open or short-circuit in the harness between TCM and pressure control solenoid valve C.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair or replace damaged parts.
  5. CHECK TCM 
    1. Check TCM input/output signal.
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    1. OK: GO TO 6.
    2. NG: Repair or replace damaged parts.
  6. CHECK DTC 

    Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Replace the transaxle assembly.
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