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Home >> Infiniti >> 2017 >> QX70 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 215 (Cruise Control System (DTCS) (Hybrid)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK FUSES

    Check if any of the following fuses are blown:

    Signal name Fuse No.
    Ignition power supply 54

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

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

  2. CHECK ICC SENSOR POWER SUPPLY CIRCUIT

    Check voltage between ICC sensor harness connector and ground.

    Terminal Condition Voltage
    (Approx.)
    (+) (-)
    ICC sensor Ground Ignition switch
    Connector Terminal
    E80 1 OFF 0 V
    ON Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair the ICC sensor power supply circuit.

  3. CHECK ICC SENSOR GROUND CIRCUIT

    1. Turn the ignition switch OFF.
    2. Disconnect the ICC sensor connector.
    3. Check for continuity between ICC sensor harness connector and ground.
      ICC sensor Ground Continuity
      Connector Terminal
      E80 8 Existed

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Repair the ICC sensor ground circuit.

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