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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Driver Assistance System (Chassis Control) (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC C1BB5-00: Ignition Power Supply >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK CONNECTOR

    1. Turn the ignition switch OFF.
    2. Disconnect chassis control module harness connector
    3. Check the connector for disconnection or looseness.
    4. Check the pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace error-detected parts, securely lock the harness connector, and GO TO STEP 2  .

  2. PERFORM SELF-DIAGNOSIS (1)

    1. Connect chassis control module harness connector.
    2. Perform self-diagnosis for "CHASSIS CONTROL".

    Is DTC "C1BB5 - 00" detected?

    YES 

    GO TO STEP 3  .

    NO 

    INSPECTION END

  3. CHECK CHASSIS CONTROL MODULE IGNITION POWER SUPPLY (1)

    1. Turn the ignition switch OFF.
    2. Disconnect chassis control module harness connector.
    3. Check the voltage between chassis control module harness connector and ground.
      Chassis control module - Voltage
      (Approx.)
      Connector Terminal
      E22 10 Ground 0 V
    4. Turn the ignition switch ON.
      CAUTION:

      Never start engine.

    5. Check the voltage between chassis control module harness connector and ground.
      Chassis control module - Voltage
      (Approx.)
      Connector Terminal
      E22 10 Ground 6.4-16 V

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    GO TO STEP 4  .

  4. CHECK CHASSIS CONTROL MODULE IGNITION POWER SUPPLY CIRCUIT

    1. Turn the ignition switch OFF.
    2. Check the A fuse (#).
    3. Check the continuity and for short circuit between chassis control module harness connector terminal (→) and A fuse (#).
    4. Check the continuity between chassis control module harness connector and the ground.
      Chassis control module - Continuity
      Connector Terminal
      E22 10 Ground Not existed

    Is the inspection result normal?

    YES 

    Perform trouble diagnosis for ignition power supply.

    NO 

    Repair or replace error-detected parts.

  5. CHECK CHASSIS CONTROL MODULE GROUND CIRCUIT

    1. Turn the ignition switch OFF.
    2. Check the continuity between chassis control module harness connector and ground.
      Chassis control module - Continuity
      Connector Terminal
      E22 12 Ground Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair or replace error-detected parts.

  6. PERFORM SELF-DIAGNOSIS (2)

    1. Connect chassis control module harness connector.
    2. Perform self-diagnosis for "CHASSIS CONTROL".

    Is DTC "C1BB5 - 00" detected?

    YES 

    Replace the chassis control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    INSPECTION END

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