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Check that ABS and brake warning lamps, ASC warning/operation lamp illuminate as follows.
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1.When the ignition switch is turned to the ON position, ABS and brake warning lamps, ASC warning/operation lamp, ASC OFF lamp illuminate.
2.The ABS and brake warning lamps, ASC warning/operation lamp, ASC OFF lamp illuminate for three seconds*1 and then turn OFF*2.
3.Otherwise, check the diagnosis code.
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- *1: The ABS warning lamp, ASC warning/operation lamp, ASC OFF lamp may stay ON until the vehicle speed reaches 10 km/h. As far as ASC-ECU stores any diagnosis code related to the wheel speed sensor malfunction or the motor malfunction as past trouble, ASC-ECU continues illuminating the ABS warning lamp until it verifies that the malfunction for that code is resolved (startup check).
If the steering wheel sensor or the G and yaw rate sensor system was detected to be defective during ignition switch being ON at the last time, the ASC warning/operation lamp and the ASC OFF lamp will illuminate until the vehicle speed reaches approx. 10 km/h, then the steering wheel is turned to either right or left and then the ECU determines that the system is normal.
- *2: The brake warning lamp does not turn OFF when the parking brake is applied or the brake fluid level is lowered.
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