Deceleration sensors andor the ECU perform zero point calibration of the master cylinder pressure yaw rate and deceleration sensors See Calibration

HINT:

If the ignition switch is turned from the ON to the ACC or LOCK position in test mode, test mode DTCs will be erased.

a. Procedures for test mode:

1. Turn the ignition switch OFF.

2. Check that the shift lever is in the P position, and turn the steering wheel to the neutral position.

3. Using SST, connect terminals TS and CG of the DLC3. SST 09843-18040

4. Start the engine.

2006 BRAKES Brake Control - Sequoia

Sst Steering Wheel

Fig. 5: Identifying DLC3 Connector

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 5: Identifying DLC3 Connector

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. Check that the ABS and VSC TRAC warning lights blink.

HINT:

If the ABS and VSC TRAC warning lights do not blink, inspect the ABS warning light circuit, VSC TRAC warning light circuit and TS terminal circuit.

6. Keep the vehicle in a stationary condition on a level surface for 4 sec. or more.

2006 BRAKES Brake Control - Sequoia

Fig. 6: Identifying Blinking Pattern

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 6: Identifying Blinking Pattern

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

ABS WARNING LIGHT CIRCUIT REFERENCE

ABS warning light circuit

ABS WARNING LIGHT REMAINS ON

VSC TRAC warning light circuit

VSC TRAC WARNING LIGHT REMAINS ON

TS terminal circuit

TS AND CG TERMINAL CIRCUIT

b. Check the yaw rate and deceleration sensor. Shift the shift lever to the D position and drive the vehicle at a vehicle speed of approx. 3 mph (5 km/h), turn the steering wheel either to the left or right for 90° or more, and turn the vehicle through 180 degrees. Check that the VSC buzzer sounds for 3 seconds upon start off.

Stop the vehicle and shift the shift lever to the P position, and check that the VSC buzzer sounds again for 3 seconds.

2006 BRAKES Brake Control - Sequoia

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Responses

  • HUGH
    How to calibrate the deceleration sensor?
    3 years ago

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