Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. 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)
1. Turn the ignition switch to the LOCK position.
2. Disconnect the connector (S9) from the steering sensor.
3. Measure the resistance according to the value(s) in Fig 2 below.
  
  Fig 1: Identifying Connector Terminals Of Yaw Rate Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Yaw Rate Sensor Tester Connection Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE STEERING SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

OK: Go to next step.
CHECK WIRE HARNESS (IG, ESS)
1. Measure the resistance according to the value(s) in Fig 4 below.
  
  Fig 3: Identifying Connector Terminals Of Steering Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 4: Steering Sensor Tester Connection Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Perform the measurement from the back of the connector with the connector connected.
2. Measure the voltage according to the value(s) in Fig 5 below.
  Standard:
  
  Fig 5: Steering Sensor Tester Connection Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Perform the measurement from the back of the connector with the connector connected.

NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

OK: REPLACE STEERING SENSOR (SEE REPLACEMENT )