Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN BUS LINE FOR DISCONNECTION (YAW RATE SENSOR SUB BUS LINE)

Turn the ignition switch to the LOCK position.
Disconnect the yaw rate sensor connector (Y1).

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified value
Y1-2 (CANL) - Y1-3 (CANH)	IG switch OFF Stop light switch OFF	54 to 69 Ω

Fig 1: Identifying Yaw Rate Sensor Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: GO TO NEXT STEP.

CHECK WIRE HARNESS (IG, GND)

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified value
Y1-1 (GND) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in CONNECTOR TERMINAL VOLTAGE SPECIFICATION .

Standard:

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Tester connection	Condition	Specified value
Y1-5 (IG) - Body ground	IG switch ON	10 to 14 V

Fig 2: Identifying Yaw Rate Sensor Connector Terminals

NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

OK: REPLACE YAW RATE SENSOR (SEE YAWRATE SENSOR )