DESCRIPTION When the vehicle stability control system is operating, as the input piston and output piston are not directly connected, the kickback of the brake pedal is minimal during ABS operation and the driver may not notice that ABS operated. CAUTION / NOTICE / HINT NOTICE: When replacing the skid control ECU (brake actuator assembly), perform system variant learning. Click here PROCEDURE
(a) Check if the slip indicator light was illuminated or blinking when ABS did not operate. HINT:
(a) Using the Techstream, check DTCs and Freeze Frame Data. Click here
(a) Check that ABS operates using a drum tester or equivalent. CAUTION: When using a drum tester, enter Inspection Mode or VSC off mode and perform inspection with the TRAC and VSC systems disabled to prevent the vehicle from moving suddenly due to TRAC or VSC operation. Click here
OK: ABS operates.
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Toyota Tundra Service Manual > Vehicle Stability Control System: Stop Light Switch OFF Stuck Malfunction (C1426)
DESCRIPTION The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied. The skid control ECU (brake actuator assembly) has a detection circuit that it uses to detect a short in the stop light input signa ...