Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Nissan-Datsun >> 2009 >> Versa Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0500 To P2A00 >> DTC P0850 PNP Switch >> Diagnosis Procedure >> A/T Models

A/T Models

  1. CHECK PNP SWITCH POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect PNP switch harness connector.
    3. Turn ignition switch ON.
    4. Check voltage between PNP switch terminal 1 and ground with CONSULT-III or tester.

      Voltage: Battery voltage 

      OK or NG 

      OK : GO TO  3.

      NG : GO TO 2.

      Fig 1: Checking Voltage Between PNP Switch Terminal 1 And Ground
      G05932868Courtesy of NISSAN MOTOR CO., U.S.A.
  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E8, F8
    • Harness for open or short between PNP switch and fuse

      Repair open circuit or short to ground or short to power in harness or connectors.

  3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between PNP switch terminal 2 and ECM terminal 69. Refer to Wiring Diagram.

      Continuity should exist  .

    4. Also check harness for short to ground and short to power.

      OK or NG 

      OK : GO TO 4.

      NG : Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK PNP SWITCH

    Refer to COMPONENT INSPECTION .

    OK or NG 

    OK : GO TO 5.

    NG : Replace PNP switch.

  5. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    INSPECTION END