Inspection Procedure

HINT:

• When U0073/94, U0100/65, U0114/38, U0123/62, U0124/95, U0126/63 or U0130/68 is output together with C1231/31, inspect and repair the trouble areas indicated by U0073/94, U0100/65, U0114/38, U0123/62, U0124/95, U0126/63 or U0130/68 first.
• When the speed sensor or the yaw rate and G sensor has trouble, DTCs of the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs of the speed sensor (C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39) or yaw rate and G sensor (C1232/32, C1234/34, C1243/43, C1244/44, C1245/45, C1381/97) are output together with DTCs of the steering angle sensor, inspect and repair the speed sensor and yaw rate and G sensor first, and then inspect and repair the steering angle sensor.

1. READ VALUE USING TECHSTREAM (STEERING ANGLE SENSOR) 
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG) and turn the Techstream on.
   3. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

      ABS/VSC/TRAC 

      DATA LIST
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Steering Angle Sensor	Steering angle sensor/min.: -3276.8 degrees, max.: 3276.7 degrees	Left turn: Increase Right turn Decrease	-

   4. Check that the steering wheel turning angle value of the steering angle sensor displayed on the Techstream changes when turning the steering wheel.

   OK: Steering angle sensor value changes. 

   NG:  Go to step  3

   OK: Go to next step 

2. RECONFIRM DTC 
   1. Clear the DTCs (See DTC CHECK/CLEAR ).
   2. Drive the vehicle at a speed of approximately 10 km/h (6 mph) or more for 10 seconds or more.
   3. Check if the same DTCs are output (See DTC CHECK/CLEAR ).

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   DTC is output.	A
   DTC is not output.	B

   B: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

   A: REPLACE MASTER CYLINDER SOLENOID  (See DISASSEMBLY )

3. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND) 
   1. Remove the steering wheel and the lower steering column cover.
   2. Disconnect the E11 steering angle sensor connector.
   3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      E11-1 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V
      E11-3 (BAT) - Body ground	Always	11 to 14 V

   4. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying E11 Steering Angle Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E11-2 (ESS) -Body ground	Always	Below 1 Ω

   HINT:

   • When troubleshooting in accordance with the Diagnostic Trouble Code Chart, check DTCs before replacing the steering angle sensor (See DTC CHECK/CLEAR ).
   • When troubleshooting in accordance with the Problem Symptoms Table, be sure to follow the table before replacing the steering angle sensor (See PROBLEM SYMPTOMS TABLE ).

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE STEERING ANGLE SENSOR  (See REMOVAL )