Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN BUS LINE FOR DISCONNECTION (STEERING SENSOR SUB BUS LINE)

Turn the power switch off.
Disconnect the steering sensor connector (S13).
Measure the resistance according to the value(s) in the table below.

Standard:

TESTER CONNECTION SPECIFIED VALUE

Tester Connection	Condition	Specified value
S13-10 (CANH) - S13-9 (CANL)	Power Switch OFF	54 to 69 Ω

Fig 1: Disconnecting Steering Sensor Connector (S13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE STEERING SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN -L)

OK: Go to next step.

CHECK WIRE HARNESS(IG1, ESS)

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

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
S13-2 (ESS) - Body ground	Always	Below 1 Ω
S13-1 (IG) - Body ground	Power Switch ON (IG)	10 to 14 V

Fig 2: Disconnecting S13 ECU Connector And Measuring Resistance And Voltage

NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

OK: REPLACE STEERING SENSOR )