Steering Angle Sensor Communication Stop Mode [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR OPEN IN CAN BUS LINES (STEERING SENSOR BRANCH WIRE)

Disconnect the cable from the negative (-) auxiliary battery terminal.

Disconnect the H23 steering sensor connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Condition	Specified Condition
H23-3 (CANH) - H23-2 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

TEXT IN ILLUSTRATION

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

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

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
H23-1 (ESS) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω

TEXT IN ILLUSTRATION

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

Connect the cable to the negative (-) auxiliary battery terminal.

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

Standard Voltage

Tester Connection	Condition	Specified Condition
H23-4 (IG1) - Body ground	Power switch on (IG)	11 to 14 V
H23-5 (BAT) - Body ground	Power switch off	11 to 14 V

TEXT IN ILLUSTRATION

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

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

OK → See step 3

REPLACE STEERING SENSOR. Refer to REMOVAL [08/2013 - ]