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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp Indicator (Except Hybrid) >> Symptom Diagnosis >> The Oil Pressure Warning Lamp Does Not Turn Off >> VQ37VHR >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK OIL PRESSURE WARNING LAMP 

    Perform auto active test. Refer to Diagnosis Description .

    Is oil pressure warning lamp blinking?

    YES

    GO TO 2.

    NO

    GO TO 5.

  2. CHECK IPDM E/R OUTPUT VOLTAGE 
    1. Turn ignition switch OFF.
    2. Disconnect the oil pressure switch connector.
    3. Turn ignition switch ON.
    4. Check voltage between the oil pressure switch harness connector and ground.

      Terminals

      Voltage

      (Approx.)

      (+)

      (-)

      Oil pressure switch

      Ground

      Connector

      Terminal

      F37

      1

      12 V

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 4.

  3. CHECK OIL PRESSURE SWITCH 

    Perform a unit check for the oil pressure switch. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    Replace IPDM E/R. Refer to Removal and Installation .

    NO

    Replace oil pressure switch. Refer to Disassembly and Assembly (2WD models) or Removal and Installation (AWD).

  4. CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT 

    Check the oil pressure switch signal circuit. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair harness or connector.

  5. CHECK COMBINATION METER INPUT SIGNAL 

    Connect CONSULT and perform an input signal check for the Combination Meter. Refer to Component Function Check .

    Is the inspection result normal?

    YES

    Replace Combination Meter. Refer to Removal and Installation .

    NO

    Replace IPDM E/R. Refer to Removal and Installation .