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Home >> Infiniti >> 2017 >> Q60 Sport, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (DTCS) >> DTC / Circuit Diagnosis >> DTC C13BC-00: Control Module IGN Power Sup >> Diagnosis Procedure >> Diagnostic Test
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Diagnostic Test

  1. CHECK IGNITION POWER SUPPLY FOR STEERING ANGLE MAIN CONTROL MODULE

    1. Turn the ignition switch OFF.
    2. Disconnect steering angle main control module harness connector.
    3. Check the voltage between steering angle main control module harness connector and ground.
      Steering angle main control module - Continuity
      Connector Terminal
      E26 25 Ground 0 V
    4. Turn the ignition switch ON.
    5. Check the voltage between steering angle control module harness connector and ground.
      Steering angle main control module - Continuity
      Connector Terminal
      E26 25 Ground 10.5 - 16.0 V

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    GO TO STEP 3  .

  2. CHECK INTERMITTENT INCIDENT FOR STEERING ANGLE MAIN CONTROL MODULE

    1. Turn the ignition switch OFF.
    2. Check enlarged contact spring of terminal. Refer to HOW TO CHECK TERMINAL .
    3. Perform intermittent incident while turning steering wheel. Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal?

    YES 

    Replace steering angle main control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace error - detected part.

  3. CHECK IGNITION POWER SUPPLY CIRCUIT (1)

    1. Turn the ignition switch OFF.
    2. Disconnect steering angle sub control module harness connector.
    3. Check the continuity between steering angle main control module harness connector and steering angle sub control module harness connector.
      Steering angle main control module Steering angle sub control module Continuity
      Connector Terminal Connector Terminal
      E26 25 E29 27 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace error - detected parts.

  4. CHECK INTERNAL CIRCUIT IN STEERING ANGLE SUB CONTROL MODULE

    Check the continuity between steering angle sub control module connector terminals.

    Steering angle sub control module Continuity
    Terminal
    25 27 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 5  .

    NO 

    Replace steering angle sub control module. Refer to REMOVAL AND INSTALLATION .

  5. CHECK IGNITION POWER SUPPLY FOR STEERING ANGLE SUB CONTROL MODULE

    1. Check the voltage between steering angle sub control module harness connector and ground.
      Steering angle sub control module - Continuity
      Connector Terminal
      E29 25 Ground 0 V
    2. Turn the ignition switch ON.
    3. Check the voltage between steering angle control module harness connector and ground.
      Steering angle sub control module - Continuity
      Connector Terminal
      E29 25 Ground 10.5 - 16.0 V

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 7  .

  6. CHECK INTERMITTENT INCIDENT FOR STEERING ANGLE SUB CONTROL MODULE

    1. Turn the ignition switch OFF.
    2. Check enlarged contact spring of terminal. Refer to HOW TO CHECK TERMINAL .
    3. Perform intermittent incident while turning steering wheel. Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal?

    YES 

    Replace steering angle sub control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace error - detected part.

  7. CHECK IGNITION POWER SUPPLY CIRCUIT (2)

    1. Turn the ignition switch OFF.
    2. Disconnect steering force control module harness connector.
    3. Check the continuity between steering angle sub control module harness connector and steering force control module harness connector.
      Steering angle sub control module Steering force control module Continuity
      Connector Terminal Connector Terminal
      E29 25 M71 27 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 8  .

    NO 

    Repair or replace error - detected parts.

  8. CHECK INTERNAL CIRCUIT IN STEERING FORCE CONTROL MODULE

    Check the continuity between steering force control module connector terminals.

    Steering force control module Continuity
    Terminal
    25 27 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 9  .

    NO 

    Replace steering force control module. Refer to REMOVAL AND INSTALLATION .

  9. CHECK IGNITION POWER SUPPLY FOR STEERING FORCE CONTROL MODULE

    1. Check the voltage between steering force control module harness connector and ground.
      Steering force control module - Continuity
      Connector Terminal
      M71 25 Ground 0 V
    2. Turn the ignition switch ON.
    3. Check the voltage between force control module harness connector and ground.
      Steering force control module - Continuity
      Connector Terminal
      M71 25 Ground 10.5 - 16.0 V

    Is the inspection result normal?

    YES 

    GO TO STEP 10  .

    NO 

    GO TO STEP 11  .

  10. CHECK INTERMITTENT INCIDENT FOR STEERING FORCE CONTROL MODULE

    1. Turn the ignition switch OFF.
    2. Check enlarged contact spring of terminal. Refer to HOW TO CHECK TERMINAL .
    3. Perform intermittent incident while turning steering wheel. Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal?

    YES 

    Replace steering force control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace error - detected part.

  11. CHECK IGNITION POWER SUPPLY CIRCUIT (3)

    1. Turn the ignition switch OFF.
    2. Check the 10A fuse (#12).
    3. Check the harness for open or short between steering force control module harness connector No. 25 terminal and the 10A fuse (#12).

    Is the inspection result normal?

    YES 

    Perform the trouble diagnosis for ignition power supply circuit. Refer to WIRING DIAGRAM - IGNITION POWER SUPPLY - .

    NO 

    Repair or replace error - detected parts.

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