Steering Angle Sensor Communication Stop Mode [12/2017 - 10/2020]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the G29*1 or G30*2 steering sensor connector.
   1. *1: w/ Variable Gear Ratio Steering System
   2. *2: w/o Variable Gear Ratio Steering System
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
   G29-3 (CANH) - G29-8 (CANL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   G30-3 (CANH) - G30-8 (CANL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   Result

   Proceed to
   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
   G29-6 (ESS) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   G30-6 (ESS) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

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 INITIALIZATION [12/2017 - 09/2018] , or refer to INITIALIZATION [09/2018 - 10/2020]

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
   G29-9 (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
   G30-9 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

Result: 

OK 

See step  3

1. 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
   G29-4 (BAT) - Body ground	Always	11 to 14 V

   W/O VARIABLE GEAR RATIO STEERING SYSTEM
   
   

   Tester Connection	Condition	Specified Condition
   G30-4 (BAT) - Body ground	Always	11 to 14 V

   Result

   Result	Proceed to
   OK	A
   NG (w/o Variable Gear Ratio Steering System)	B
   NG (w/ Variable Gear Ratio Steering System)	C

Result: 

A 

REPLACE STEERING SENSOR. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020] 

Result: 

B 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

Result: 

C 

See step  4

1. Disconnect the G79 front steering control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G79-1 (+BO) - G29-4 (BAT)	Always	Below 1 Ω
   G79-1 (+BO) or G29-4 (BAT) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G79-7 (+BI) - Body ground	Always	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FRONT STEERING CONTROL ECU. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR