Steering Angle Sensor Communication Stop Mode [11/2016 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the F58 steering sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *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

   Tester Connection	Condition	Specified Condition
   F58-3 (CANH) - F58-2 (CANL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (STEERING SENSOR) 

Result: 

OK 

See step  2

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Steering Sensor)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F58-1 (ESS) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

2. Reconnect the cable to the negative (-) battery terminal.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F58-4 (IG1) - Body ground	Ignition switch ON	11 to 14 V
   F58-5 (BAT) - Body ground	Always	11 to 14 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Steering Sensor)

   Result

   Result	Proceed to
   OK	A
   NG (except IG1 signal circuit) NG (for IG1 signal circuit (w/o Stop and Start System))	B
   NG (for IG1 signal circuit (w/ Stop and Start System))	C

Result: 

A 

REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2013 - ] 

Result: 

B 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

Result: 

C 

Refer to  Backup Boost Converter Circuit [11/2016 - ]