Inspection Procedure

1. Go to next step.

Check the DTC PRE-CHECK 

1. NO: END. 
2. YES: Go to next step. 

In case of using the hand-held tester: 

PREPARATION: 

1. Remove the 2 bolts and yaw rate sensor with connectors still connected.
2. Connect the hand-held tester to the DLC3.
3. Turn the ignition switch ON and push the hand-held tester main switch ON.
4. Select the DATALIST mode on the hand-held tester.
   Fig 1: Identifying Yaw Rate Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK: 

Check that the yaw rate value of the yaw rate sensor displayed on the hand-held tester changes. Place the yaw rate sensor vertically to the ground and turn the sensor pivoted on its center.

OK: 

Yaw rate value must be changing. 

In case of not using the hand-held tester: 

PREPARATION: 

1. Remove the yaw rate sensor with the connector still connected to it.
2. Turn the ignition switch to ON.

   CHECK: 

   Measure voltage between terminals YAW2 (1) - GYAW (5), and terminals YD (6) - GYAW (5) of the yaw rate sensor.

   OK: 

   YAW RATE SENSOR TERMINALS VOLTAGE
   
   

   Terminals 1 and 5 (YAW2 - GYAW)	About 2.42 V to 2.58 V
   Terminals 6 and 5 (YD - GYAW)	About 4.5 V to 5.3 V

   Fig 2: Measuring Voltage Between Terminals Of Yaw Rate Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: Replace yaw rate sensor. 
2. OK: Go to next step. 

PREPARATION: 

Remove the ABS & BA & TRAC & VSC ECU with connectors still connected.

CHECK: 

1. Turn the ignition switch ON.
2. Measure voltage between terminals YD and GND of the ABS & BA & TRAC & VSC ECU.

   OK: 

   Voltage: 4.5 to 5.3 V 

   Fig 3: Measuring Voltage Between Terminals YD & GND Of ABS, BA, TRAC & VSC ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. OK: Check and replace ABS & BA & TRAC & VSC ECU. 
2. NG: Go to next step. 

1. NG: Repair or replace harness or connector. 
2. OK: Check and replace ABS & BA & TRAC & VSC ECU.