Inspection Procedure

CLEAR DECELERATION SENSOR ZERO POINT CALIBRATION DATA
1. Clear the zero point calibration data (see CALIBRATION ).
CHECK FOR DTC
1. Check that DTC C1336/39 is not output.
  OK: DTC C1336/39 is not output.
OK: END

NG: Go to Next Step

INSPECT YAW RATE AND ACCELERATION SENSOR (INCLUDING DECELERATION SENSOR)

Remove the console box and deceleration sensor.
Connect 3 dry cell batteries of 1.5 V in series.
Connect terminal 8 (VYS) to the batteries' positive (+) terminal and terminal 5 (GYAW) to the batteries' negative (-) terminal.
NOTE: Do not apply voltage of 6 V or more to terminals 8 (VYS) and 5 (GYAW).

Measure the output voltage of the sensor when the sensor is tilted forward and rearward.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Condition	Sensor Condition	Specified Condition
4 (GL1) - Battery's negative (-) terminal	Horizontal	2.5 V
4 (GL1) - Battery's negative (-) terminal	Tilt forward	0.5 V to 2.5 V
4 (GL1) - Battery's negative (-) terminal	Tilt rearward	2.5 to 4.5 V
2 (GL2) - Battery's negative (-) terminal	Horizontal	2.5 V
2 (GL2) - Battery's negative (-) terminal	Tilt forward	0.5 V to 2.5 V
2 (GL2) - Battery's negative (-) terminal	Tilt rearward	2.5 to 4.5 V

HINT:

If the sensor is tilted too much, it may output the wrong value.
If the voltage is out of the specification, replace the sensor with a new one.
When replacing the sensor, do not place the sensor upside down.

Fig 1: Inspecting YAW Rate And Acceleration Sensor (Including Deceleration Sensor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE YAW RATE AND ACCELERATION SENSOR

OK: Go to Next Step

CHECK WIRE HARNESS (SKID CONTROL ECU - YAW RATE SENSOR)

Fig 2: Checking Wire Harness (Skid Control ECU - YAW Rate Sensor)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE SKID CONTROL ECU