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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (2 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0850: PNP Switch >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

  1. INSPECTION START

    Will CONSULT be used?

    Will CONSULT be used?

    YES 

    GO TO STEP 2. 

    NO 

    GO TO STEP 5. 

  2. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    GO TO STEP 3. 

  3. CHECK PNP SIGNAL

    G-20With CONSULT 

    1. Turn ignition switch ON.
    2. Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT. Then check the "P/N POSI SW" signal under the following conditions.
      Position (Selector lever) Known-good signal
      N or P position ON
      Except above position OFF

    Is the inspection result normal?

    YES 

    GO TO STEP 4. 

    NO 

    Proceed to DIAGNOSIS PROCEDURE .

  4. PERFORM DTC CONFIRMATION PROCEDURE

    1. Select "DATA MONITOR" mode with CONSULT.
    2. Start engine and warm it up to normal operating temperature.
    3. Maintain the following conditions for at least 50 consecutive seconds.
      CAUTION:

      Always drive vehicle at a safe speed.

      ENG SPEED 1, 100 - 6, 375 RPM
      COOLANT TEMP/S More than 65°C (149°F)
      B/FUEL SCHDL 2.2 - 31.8 msec
      VHCL SPEED SE More than 64 km/h (40 mph)
      Selector lever Suitable position
    4. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES 

    Proceed to DIAGNOSIS PROCEDURE .

    NO 

    INSPECTION END

  5. PERFORM COMPONENT FUNCTION CHECK

    Perform component function check. Refer to COMPONENT FUNCTION CHECK .

    NOTE:

    Use component function check to check the overall function of the park/neutral position (PNP) signal circuit. During this check, a 1st trip DTC might not be confirmed.

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Proceed to DIAGNOSIS PROCEDURE .

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