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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1752 (Automatic Transmission (Sedan)) >> A/T Shift Lock System >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM 1: 

SYMPTOM 2: 

  1. CHECK KEY INTERLOCK CABLE 

    Check key interlock cable for damage.

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Repair key interlock cable. Refer to "KEY INTERLOCK CABLE ".
  2. CHECK SELECTOR LEVER POSITION 

    Check selector lever position for damage. Refer to "CHECKING OF A/T POSITION ".

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Adjustment A/T position. Refer to "ADJUSTMENT OF A/T POSITION ".
  3. CHECK POWER SOURCE 
    1. Turn ignition switch ON. (Do not start engine.)
    2. Check voltage between A/T device harness connector M47 terminal 2 and ground.

    Voltage: Battery voltage 

    OK or NG 

    1. OK: GO TO  5.
    2. NG: GO TO 4.
      Fig 1: Identifying Voltage Between A/T Device Harness Connector M47 Terminal 2 And Ground
      G04120803Courtesy of NISSAN MOTOR CO., U.S.A.
  4. DETECT MALFUNCTIONING ITEM 

    Check the following.

    1. Harness for short or open between ignition switch and A/T device harness connector M47 terminal 2
    2. 10 A fuse [No.12, located in the fuse block (J/B)]
    3. Ignition switch. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair or replace damaged parts.
  5. CHECK INPUT SIGNAL A/T DEVICE 
    1. Turn ignition switch OFF.
    2. Disconnect A/T device harness connector.
    • Check voltage between A/T device harness connector M47 terminal 4 and ground.

      Voltage: 

      Depressed brake pedal 

      : Battery voltage 

      Released brake pedal 

      : Approx. 0 V 

      Fig 2: Identifying Voltage Between A/T Device Harness Connector M47 Terminal 4 And Ground
      G04120804Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  7.
    2. NG: GO TO 6.
  6. DETECT MALFUNCTIONING ITEM 

    Check the following.

    1. Harness for short or open between battery and stop lamp switch harness connector terminal 1.
    2. Harness for short or open between stop lamp switch harness connector E124 terminal 2 and A/T device harness connector M47 terminal 4.
    3. 10 A fuse [No.20, located in the fuse block (J/B)]
    4. Stop lamp switch
    • Check continuity between stop lamp switch harness connector E124 terminals 1 and 2.
      Fig 3: Identifying Continuity Between Stop Lamp Switch Harness Connector E124 Terminals 1 And 2
      G04120805Courtesy of NISSAN MOTOR CO., U.S.A.

    Check stop lamp switch after adjusting brake pedal - refer to "BRAKE PEDAL ".

    OK or NG 

    1. OK: GO TO 7.
    2. NG: Repair or replace damaged parts.
  7. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect A/T device harness connector.
    3. Check continuity between A/T device harness connector M47 terminal 1 and ground.

    Continuity should exist. 

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

    OK or NG 

    1. OK: GO TO 8.
    2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
      Fig 4: Identifying Continuity Between A/T Device Harness Connector M47 Terminal 1 And Ground
      G04120806Courtesy of NISSAN MOTOR CO., U.S.A.
  8. CHECK PARK POSITION SWITCH AND SHIFT LOCK RELAY CIRCUIT (COIL SIDE) 

    Check continuity between A/T device harness connector M47 terminals 1 and 4.

    Fig 5: Identifying Continuity Between A/T Device Harness Connector M47 Terminals 1 And 4
    G04120807Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 9.
    2. NG:
      • Replace park position switch or shift lock relay.
      • Repair open circuit or short to ground or short to power in harness or connectors.
  9. CHECK SHIFT LOCK SOLENOID AND SHIFT LOCK RELAY CIRCUIT (SWITCH SIDE) 
    1. Connect A/T device harness connector.
    2. Turn ignition switch ON. (Do not start engine.)
    3. Check shift lock solenoid and shift lock relay operation.
    PEDAL OPERATION CONDITION

    Condition Brake pedal Operation
    When ignition switch is turned to ON position and selector lever is set in "P" position. Depressed Yes
    Released No

    OK or NG 

    1. OK: GO TO 10.
    2. NG:
      • Replace shift lock solenoid or shift lock relay.
      • Repair open circuit or short to ground or short to power in harness or connectors.
  10. CHECK A/T DEVICE INSPECTION 
    1. Perform A/T device input/output signal inspection test. Refer to "A/T DEVICE INSPECTION TABLE ".
    2. If NG, recheck harness connector connection.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Repair or replace damaged parts.