Inspection Procedure

HINT:

• When U0073/94, U0123/62, U0124/95 or U0126/63 is output together with C1231/31, inspect and repair the trouble areas indicated by U0073/94, U0123/62, U0124/95 or U0126/63 first.
• When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering sensor may be output even when the steering sensor is normal. When DTCs for the speed sensor (C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39) or yaw rate and deceleration sensor (C1232/32, C1234/34, C1243/43, C1244/44, C1245/45, C1381/81) 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 sensor.

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

      Standard: 

      STEERING SENSOR CONNECTOR TERMINALS VOLTAGE
      
      

      Tester Connection	Condition	Specified Condition
      S12-1 (IG1)-S12-2 (ESS)	IG switch ON	10 to 14 V

   5. Measure the voltage according to the value (s) in the table below.
      Fig 1: Measuring Voltage Between Steering Sensor Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      STEERING SENSOR CONNECTOR TERMINALS VOLTAGE
      
      

      Tester Connection	Condition	Specified Condition
      S12-3(BAT)-S12-2 (ESS)	IG switch ON	10 to 14 V

   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: GO TO NEXT STEP. 

      REPLACE STEERING SENSOR (SEE  STEERING SENSOR  )