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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2058 (Automatic Transmission) >> DTC P0825 Lever Switch Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK LEVER SWITCH CIRCUIT 

    With CONSULT-II 

    1. Turn ignition switch "ON". (Do not start engine.)
    2. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
    3. Read out ON/OFF switching action of the "RANGE SLCT SW".
      Fig 1: CONSULT-II DATA MONITOR Screen
      G04906195Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch "ON". (Do not start engine.)
    2. Check voltage between the TCM connector terminal and ground.
      VOLTAGE CHART

      Connector No. Terminal Condition Voltage (Approx.)
      E143 16 - Ground Lever switch: "ON" position 0V
      Lever switch: "OFF" position Battery voltage

    OK or NG 

    OK: GO TO  4.

    NG: GO TO 2.

    Fig 2: Checking Voltage Between TCM Connector Terminal And Ground
    G04906196Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS BETWEEN TCM AND A/T DEVICE (LEVER SWITCH) 
    1. Turn ignition switch "OFF".
    2. Disconnect the TCM connector.
    3. Check the continuity between TCM connector terminal 16 and ground.
      CONTINUITY CHART

      Connector No. Terminal Condition Continuity
      E143 16 - Ground Lever switch: "ON" position Yes
      Lever switch: "OFF" position No
    4. If OK, check harness for short-circuit to ground or power source.

    OK or NG 

    OK: GO TO  4.

    NG: GO TO 3.

    Fig 3: Checking Continuity Between TCM Connector Terminal 16 And Ground
    G04906197Courtesy of NISSAN MOTOR CO., U.S.A.
  3. DETECT MALFUNCTIONING ITEM 

    Check the following.

    • Open or short-circuit in the harness between TCM and A/T device (lever switch).
    • Open or short-circuit in the harness for ground of lever switch.
    • Lever switch. Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace damaged parts.

  4. CHECK DTC 

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

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 5.

  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 

    OK: INSPECTION END 

    NG: Repair or replace damaged parts.

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