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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can System (DTC/Circuit Diagnosis) >> Circuit Diagnosis >> Lane Branch Line Circuit >> Diagnosis Procedure

Diagnosis Procedure

  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 front camera unit for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal?

    >>

    GO TO 2.

    >>

    Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT 
    1. Disconnect the connector of front camera unit.
    2. Check the resistance between the front camera unit harness connector terminals.
      Front camera unit harness connector Resistance (Ω)
      Connector No. Terminal No.
      M260 5 6 Approx. 54 - 66

    Is the measurement value within the specification?

    >>

    GO TO 3.

    >>

    Repair the front camera unit branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check the power supply and the ground circuit of the front camera unit. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    >>

    Replace the front camera unit. Refer to Removal and Installation .

    >>

    Error was detected in the front camera unit branch line.

    >>

    Repair the power supply and the ground circuit.

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