Inspection Procedure

HINT:

• When U0073/94, U0100/65, U0121/94, U0123/62, U0124/95 and/or U0126/63 are output together with C1231/31, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0121/94, U0123/62, U0124/95 or U0126/63 first.
• When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate sensor are output together with other DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor first, and then inspect and repair the steering angle sensor.
• Start the inspection from step 1 when using the hand-held tester and start from step  2 when not using the hand-held tester.

1. READ VALUE OF HAND-HELD TESTER (STEERING ANGLE SENSOR) 
   1. Connect the hand-held tester to the DLC3.
   2. Start the engine.
   3. Select the DATA LIST mode on the hand-held tester.
      STEERING ANGLE SENSOR
      
      

      Item	Measurement Item / Range (Display)	Normal Condition
      STEERING ANG	Steering sensor/Min.: -1152 deg, Max.: 1150.875 deg	Min.: -128 deg/s Max.: 128 deg/s

   4. Check that there is no difference between the speed value output from the speed sensor displayed on the hand-held tester and the speed value displayed on the speedometer when driving the vehicle.

   OK: 

   Steering angle value should change. 

   OK: REPLACE BRAKE ACTUATOR ASSY (See step 3 in  REPLACEMENT  ) 

   NG: Go to next step 

2. CHECK TERMINAL VOLTAGE (STEERING ANGLE SENSOR CONNECTOR) 
   1. Remove the steering wheel and the column lower cover.
   2. Disconnect the steering angle sensor connector S11.
   3. Turn the ignition switch to the ON position.
   4. Measure the voltage according to the value(s) in STEERING ANGLE SENSOR CONNECTOR  .

   Standard: 

   STEERING ANGLE SENSOR CONNECTOR
   
   

   Tester Connection	Specified Condition
   S11-1 (IG1) - S11-2 (ESS)	10 to 14 V
   S11-3 (BAT) - S11-2 (ESS)	10 to 14 V

   Fig 1: Checking Terminal Voltage (Steering Angle Sensor Connector)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE STEERING ANGLE SENSOR (See step 12 in  STEERING SENSOR  )