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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> ADAS Control Unit (DTC/Circuit Diagnosis) (1 Of 2) >> DTC C1A06: Operation SW >> ADAS Control Unit >> With Direct Adaptive Steering System >> Diagnosis Procedure >> ADAS Control Unit (DTC/Circuit Diagnosis) (1 Of 2)
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ADAS Control Unit (DTC/Circuit Diagnosis) (1 Of 2)

Regarding Wiring Diagram information, refer to appropriate system Wiring Diagram .



  1. CHECK SELF-DIAGNOSIS RESULTS 

    Check if "U1000" is detected other than "C1A06" in "Self Diagnostic Result" mode of "ICC/ADAS".

    Is "U1000" detected?

    YES

    Perform the CAN communication system inspection. Repair or replace the malfunctioning parts. Refer to DTC Logic .

    NO

    GO TO 2.

  2. CHECK ICC STEERING SWITCH 
    1. Turn the ignition switch OFF.
    2. Disconnect the ICC steering switch connector.
    3. Check the ICC steering switch. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Replace the ICC steering switch.

  3. CHECK HARNESS BETWEEN SPIRAL CABLE AND ECM 
    1. Disconnect the ECM connector.
    2. Check for continuity between the spiral cable harness connector and ECM harness connector.

      Spiral cable

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M30

      1

      E16

      144

      Yes

      13

      145

    3. Check for continuity between spiral cable harness connector and ground.

      Spiral cable

      Ground

      Continuity

      Connector

      Terminal

      M30

      1

      No

      13

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair the harnesses or connectors.

  4. CHECK SPIRAL CABLE 

    Check for continuity between spiral cable terminals.

    Spiral cable

    Continuity

    Terminal

    1

    35

    Yes

    13

    34

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace the spiral cable.

  5. PERFORM SELF-DIAGNOSIS OF ECM 

    SYMBOL CONSULT

    1. Connect the connectors of ICC steering switch and ECM connector.
    2. Turn the ignition switch ON.
    3. Select "Self Diagnostic Result" mode of "ENGINE".
    4. Check if any DTC is detected in "Self Diagnostic Result" mode of "ENGINE".

    Is any DTC detected?

    YES

    Perform "Self Diagnostic Result" on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC Index .

    NO

    Replace the distance sensor. Refer to Removal and Installation .