Steering Angle Sensor Communication Stop Mode: Procedure

CHECK CAN BUS LINE FOR DISCONNECTION (STEERING ANGLE SENSOR BRANCH WIRE)

Turn the power switch off.
Disconnect the steering angle sensor connector.

Fig 1: Identifying H29 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
H29-4 (CANH) - H29-3 (CANL)	Power switch off	54 to 69 Ω

TEXT IN ILLUSTRATION

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

NG → REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (STEERING ANGLE SENSOR)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

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

Fig 2: Identifying H29 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
H29-5 (IG1) - Body ground	Power switch on (IG)	11 to 14 V

TEXT IN ILLUSTRATION

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)

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

Fig 3: Identifying H29 Connector Terminals

Standard Resistance

Tester Connection	Condition	Specified Condition
H29-2 (ESS) - Body ground	Always	Below 1 Ω

TEXT IN ILLUSTRATION

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

OK → See step 4