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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> LAN System (Can) (Exc Hybrid) >> DTC/Circuit Diagnosis >> CGW Branch Line Circuit (Can Communication Circuit 1) >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DTC

    Check DTC of the CAN gateway with CONSULT.

    Is U1010 or B2600 indicated?

    YES 

    Perform a diagnosis of the indicated DTC.

    NO 

    GO TO STEP 2  .

  2. CHECK CONNECTOR

    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the following terminals and connectors of CAN gateway for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair the terminal and connector.

  3. CHECK HARNESS FOR OPEN CIRCUIT

    1. Disconnect the connector of CAN gateway.
    2. Check the resistance between the CAN gateway harness connector terminals.
      CAN gateway harness connector Resistance (Ω)
      Connector No. Terminal No.
      M24 1 7 Approx. 54 - 66

    Is the measurement value within the specification?

    YES 

    GO TO STEP 4  .

    NO 

    Repair the CAN gateway branch line.

  4. CHECK POWER SUPPLY AND GROUND CIRCUIT

    Check the power supply and the ground circuit of the CAN gateway. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES (Present error) 

    Replace the CAN gateway. Refer to REMOVAL AND INSTALLATION .

    YES (Past error) 

    Error was detected in the CAN gateway branch line (CAN communication circuit 1 side).

    NO 

    Repair the power supply and the ground circuit.

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