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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (LAN System (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure

Diagnosis 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. CHECK FUSE

    Check that the following fuse are not blown.

    Signal name Fuse No.
    Battery power supply 25
    Ignition power supply 31

    Is the fuse fusing?

    YES 

    Replace the blown fuse after repairing the affected circuit if a fuse is blown.

    NO 

    GO TO STEP 2. 

  2. CHECK POWER SUPPLY CIRCUIT

    1. Turn the ignition switch OFF.
    2. Disconnect the connector of CAN gateway.
    3. Check voltage between CAN gateway harness connector and ground.
      Terminals Condition Standard voltage Reference voltage
      (Approx.)
      (+) (-)
      CAN gateway Ground Ignition switch
      Connector Terminal
      M5 3 OFF 6 - 16 V Battery
      voltage
      9 ON 4.5 - 16 V Battery
      voltage

    Is the measurement value normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair harness or connector.

  3. CHECK GROUND CIRCUIT

    Check continuity between CAN gateway harness connector and ground.

    CAN gateway Ground Continuity
    Connector Terminal
    M5 5 Existed
    11

    Does continuity exist?

    YES 

    INSPECTION END

    NO 

    Repair harness or connector.

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