DTC C1336/39: Zero Point Calibration of Acceleration Sensor Undone: Procedure

1. Clear the zero point calibration data. Refer to CALIBRATION .

NEXT: Go to next step 

1. Check that DTC C1336/39 is not output.

   OK

   DTC C1336/39 is not output.

OK → END 

NG: Go to next step 

Fig 1: Identifying YAW Rate And Acceleration Sensor (Including Deceleration Sensor)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the console box and deceleration sensor.
2. Connect 3 dry cell batteries of 1.5 V in series.
3. 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).

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

   Standard voltage

   Tester Connection	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.

NG → REPLACE YAW RATE AND ACCELERATION SENSOR 

OK: Go to next step 

Fig 2: Checking Wire Harness (Skid Control Ecu - Yaw Rate Sensor)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the S6 ECU connector.
2. Disconnect the Y1 sensor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   S6-1 (VGS) - Y1-8 (VYS)	Below 1 Ω
   S6-10 (GL2) - Y1-2 (GL2)	Below 1 Ω
   S6-21 (GGND) - Y1-5 (GYAW)	Below 1 Ω
   S6-22 (GL1) - Y1-4 (GL1)	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → REPLACE SKID CONTROL ECU