Steering Angle Sensor Communication Stop Mode [05/2023 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the steering sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Variable Gear Ratio Steering System
   *B	w/o Variable Gear Ratio Steering System
   *a	Front view of wire harness connector (to Steering Sensor)

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   W/ VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P22-3 (CANH) - P22-8 (CANL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P21-3 (CANH) - P21-8 (CANL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   Result

   Result
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR 

Result: 

OK 

See step  2

1. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   W/ VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P22-6 (ESS) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P21-6 (ESS) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Variable Gear Ratio Steering System
   *B	w/o Variable Gear Ratio Steering System
   *a	Front view of wire harness connector (to Steering Sensor)

2. Reconnect the cable to the negative (-) battery terminal.
   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

   Refer to WORK PROCEDURE [05/2023 - ]

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

   Standard Voltage

   W/ VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P22-4 (BAT) - Body ground	Always	11 to 14 V
   P22-9 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   P21-4 (BAT) - Body ground	Always	11 to 14 V
   P21-9 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

   Result

   Result
   OK
   NG

Result: 

OK 

REPLACE STEERING SENSOR. Refer to  REMOVAL [05/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR