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Diagnosis Procedure - Late Production

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT 
    1. Disconnect the connector of ECM.
    2. Check the resistance between the ECM harness connector terminals.
      • With VQ35DD

        ECM harness connector

        Resistance (Ohm)

        Connector No.

        Terminal No.

        E32

        176

        175

        Approx. 108 - 132

    Is the measurement value within the specification?

    YES

    GO TO 3.

    NO

    Repair the ECM branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check the power supply and the ground circuit of the ECM. Refer to the following.

    Is the inspection result normal?

    YES

    Replace the ECM. Refer to the following.

    YES

    Error was detected in the ECM branch line.

    NO

    Repair the power supply and the ground circuit.

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