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
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 |
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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