If the ABS warning light and Vsc Trac warning light do not

2004 BRAKES ABS With EBD & BA & TRAC & VSC System - Diagnostics - Sequoia blink, inspect the ABS warning light circuit, VSC TRAC warning light circuit and TS terminal circuit (See ABS WARNING LIGHT CIRCUIT , VSC TRAC WARNING LIGHT CIRCUIT and TS TERMINAL CIRCUIT ).

6. Keep the vehicle in the stationary condition on the flat place for 4 sec. or more.

Fig. 12: Measuring Time Between Two Signals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Check the yaw rate and deceleration sensor.

Shift the shift lever to the D position and drive the vehicle at the vehicle speed of approx. 5 km/h (3 mph), turn the steering wheel either to left or right for 90° or more, and maintain 180° circular drive for the vehicle, check that the VSC buzzer sounds for 3 sec. upon the first vehicle movement.

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

Start Ppsition

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