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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Transfer Case (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC C1205: AWD Actuator Relay >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK AWD SOLENOID CIRCUIT (1) 
    1. Turn the ignition switch OFF.
    2. Disconnect AWD Control Unit harness connector.
    3. Check the continuity between AWD Control Unit harness connector and the ground.

      AWD Control Unit

      --

      Continuity

      Connector

      Terminal

      B17

      1

      Ground

      Not existed

      2

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    GO TO 2.

  2. CHECK AWD SOLENOID 
    1. Disconnect AWD solenoid harness connector.
    2. Check the continuity between AWD solenoid harness connector and the ground.

      AWD solenoid

      --

      Continuity

      Terminal

      1

      Ground

      Not existed

      2

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Replace Electric Controlled Coupling. Refer to Exploded View .

  3. CHECK AWD SOLENOID CIRCUIT 

    Check the continuity between AWD Control Unit harness connector and the ground.

    AWD Control Unit

    --

    Continuity

    Connector

    Terminal

    B17

    1

    Ground

    Not existed

    2

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace damaged parts.

  4. CHECK TERMINALS AND HARNESS CONNECTORS 
    1. Check AWD Control Unit pin terminals for damage or loose connection with harness connector.
    2. Check AWD solenoid pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal?

    YES

    After connecting each harness connector, perform DTC confirmation procedure again. When DTC "C1205" is detected, replace AWD Control Unit. Refer to Removal and Installation .

    NO

    Repair or replace damaged parts.