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Check Park Position Switch

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK PARK POSITION SWITCH INPUT SIGNAL 
    1. Turn ignition knob LOCK position.
    2. Check voltage between Intelligent Key unit connector and ground.
      Fig 1: Identifying Voltage Between Intelligent Key Unit Harness Connector And Ground
      G04922177Courtesy of NISSAN MOTOR CO., U.S.A.
      PARK POSITION SWITCH INPUT SIGNAL

      Connector Terminal (Wire color) Condition Voltage (V) (Approx.)
      (+) (-)
      M34 39 (R/Y) Ground When selector lever is locked at the "P" position 0
      When selector lever is not locked at the "P" position Battery voltage

    OK or NG 

    OK: Park position switch circuit is OK.

    NG: GO TO 2.

  2. CHECK PARK POSITION SWITCH CIRCUIT 
    1. Disconnect A/T device (park position switch) connector.
    2. Check voltage between A/T device (park position switch) connector M67 terminal 3 (R/Y) and ground. (Check harness for open.)

      3 (R/Y) - Ground : Battery voltage 

      Fig 2: Identifying Voltage Between A/T Device (Park Position Switch) Connector M67 Terminal 3 (R/Y) And Ground
      G05220932Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between A/T device (park position switch) connector M67 terminals 3 (R/Y) and ground. (Check harness for short.)

      3 (R/Y) - Ground : Continuity should not exist. 

      Fig 3: Identifying Continuity Between A/T Device (Park Position Switch) Connector M67 Terminals 3 (R/Y) And Ground
      G05220933Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK PARK POSITION SWITCH 

    Check continuity between A/T device (park position switch) terminals 2 and 3.

    Fig 4: Identifying Continuity Between A/T Device (Park Position Switch) Terminals 2 And 3
    G05220934Courtesy of NISSAN MOTOR CO., U.S.A.
    PARK POSITION SWITCH

    Terminal Condition Continuity
    2 3 When selector lever is not locked at the "P" position No
    When selector lever is locked at the "P" position Yes

    OK or NG 

    OK: GO TO 4.

    NG: Replace back A/T device (park position switch).

  4. PARK POSITION SWITCH GROUND CIRCUIT INSPECTION 

    Check continuity between A/T device (park position switch) connector M67 terminal 2 (B) and ground.

    2 (B) - Ground : Continuity should exist. 

    Fig 5: Identifying Continuity Between A/T Device Connector M67 Terminal 2 (B) And Ground
    G05220935Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Check harness connection.

NG: Repair or replace harness.