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Diagnostic Test

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 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 STEP 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.
      • Except for Mexico
        ECM harness connector Resistance (Ω)
        Connector No. Terminal No.
        E32 124 123 Approx. 108 - 132

    Is the measurement value within the specification?

    YES 

    GO TO STEP 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 (Present error) 

    Replace the ECM. Refer to the following.

    YES (Past error) 

    Error was detected in the ECM branch line.

    NO 

    Repair the power supply and the ground circuit.

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