Steering Angle Sensor Communication Stop Mode: Procedure

1. Turn the ignition switch to the LOCK position.
   Fig 1: Identifying Steering Angle Sensor (S12) Connector Terminals (CANH & CANL)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the steering angle sensor connector (S12).
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester connection	Condition	Specified value
   S12-3 (CANH) - S12-11 (CANL)	IG switch OFF Stop light switch OFF	54 to 69 Ω

NG → REPAIR OR REPLACE STEERING ANGLE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L) 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying Steering Angle Sensor (S12) Connector Terminals (ESS & IG1)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester connection	Condition	Specified value
   S12-2 (ESS) - Body ground	Always	Below 1 Ω

2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester connection	Condition	Specified value
   S12-1 (IG1) - Body ground	IG switch ON	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE STEERING ANGLE SENSOR