Inspection Procedure

HINT:

• When U0073/94, U0123/62, U0124/95 or U0126/63 is output accompanied 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 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 accompanied 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.

1. Measure input voltage of steering angle sensor. 

   PREPARATION: 

   1. Remove the steering wheel and column lower cover (see REMOVAL ).
   2. Disconnect the steering angle sensor connector.

   CHECK: 

   1. Turn the ignition switch ON.
   2. Measure the voltage between terminals 1 and 2, 2 and 3 of the steering angle sensor harness side connector.

   OK: 

   Voltage: 10 to 14 V 

   Fig 1: Measuring Input Voltage Of Steering Angle Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: Repair or replace harness and connector. 
   2. OK: Replace steering angle sensor.