Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CONNECTOR INSPECTION 
   1. Turn ignition switch OFF.
   2. Disconnect ABS actuator and electric unit (control unit) and steering angle sensor connectors.
   3. Check connectors and terminals for deformation, disconnection, looseness or damage.

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair or replace as necessary.

2. CHECK STEERING ANGLE SENSOR MOUNTING CONDITION 

   Check steering angle sensor mounting condition.

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair or replace malfunctioning components.

3. CHECK STEERING ANGLE SENSOR POWER SUPPLY 
   1. Turn ignition switch OFF.
   2. Disconnect steering angle sensor connector.
   3. Turn ignition switch ON.
   4. Check voltage between steering angle sensor connector M14 terminal 4 and ground.

      Steering angle sensor		-	Voltage (Approx.)
      Connector	Terminal
      M14	4	Ground	Battery voltage

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Check the following:

      • Repair or replace harness.
      • Fuse.
4. CHECK STEERING ANGLE SENSOR GROUND CIRCUIT 
   1. Turn ignition switch OFF.
   2. Check continuity between steering angle sensor connector M14 terminal 1 and ground.

      Steering angle sensor		-	Continuity
      Connector	Terminal
      M14	1	Ground	Yes

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair or replace malfunctioning components.

5. CHECK CAN COMMUNICATION LINE 

   Check "STRG BRANCH LINE CIRCUIT". Refer to "DIAGNOSIS PROCEDURE " (type 1) or "DIAGNOSIS PROCEDURE " (type 2).

   Is the inspection result normal? 

   YES: Replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace malfunctioning components.