Diagnosis Procedure

Regarding Wiring Diagram information, refer to appropriate Wiring Diagram .

1. CHECK STEERING FORCE CONTROL MODULE POWER SUPPLY CIRCUIT (1) 
   1. Turn the ignition switch OFF.
   2. Disconnect steering force control module harness connector.
   3. Check the voltage between steering force control module harness connector and ground.

      Steering force control module		--	Voltage (Approx.)
      Connector	Terminal
      E142	34	Ground	Battery voltage

   Is the inspection result normal?

   YES

   GO TO 3.

   NO

   GO TO 2.

2. CHECK STEERING FORCE CONTROL MODULE POWER SUPPLY CIRCUIT (2) 
   1. Check the 60A fusible link (#Q).
   2. Check the harness for open or short between steering force control module harness connector No. 33 terminal and the 60A fusible link (#Q).

   Is the inspection result normal?

   YES

   Perform the trouble diagnosis for battery power supply circuit. Refer to appropriate Wiring Diagram .

   NO

   Repair or replace malfunctioning components.

3. CHECK STEERING ANGLE SUB CONTROL MODULE POWER SUPPLY CIRCUIT (1) 
   1. Turn the ignition switch OFF.
   2. Disconnect steering angle sub control module harness connector.
   3. Check the voltage between steering angle sub control module harness connector and ground.

      Steering angle sub control module		--	Voltage (Approx.)
      Connector	Terminal
      E145	33	Ground	Battery voltage

   Is the inspection result normal?

   YES

   GO TO 5.

   NO

   GO TO 4.

4. CHECK STEERING ANGLE SUB CONTROL MODULE POWER SUPPLY CIRCUIT (2) 
   1. Check the 100A fusible link (#Z).
   2. Check the harness for open or short between steering angle sub control module harness connector No. 33 terminal and the 100A fusible link (#Z).

   Is the inspection result normal?

   YES

   Perform the trouble diagnosis for battery power supply circuit. Refer to appropriate Wiring Diagram .

   NO

   Repair or replace malfunctioning components.

5. PERFORM SELF-DIAGNOSIS 

   CONSULT

   1. Turn the ignition switch ON.
   2. Erase "Self Diagnostic Result" mode of "DAST 1".
   3. Turn the ignition switch OFF and wait for at least 10 seconds.
   4. Start the engine.
      CAUTION: Never drive the vehicle.
   5. Select "Self Diagnostic Result" mode of "DAST 1".

   Is DTC "C13AC-00" detected?

   YES

   Replace steering angle main control module. Refer to Removal and Installation

   NO

   • Check enlarged contact spring of terminal. Refer to How to Check Terminal .
   • Perform intermittent incident while turning steering wheel. Refer to Intermittent Incident .