DESCRIPTION Troubleshooting for when ABS operates too soon due to a noisy signal from the speed sensor, a difference in output, etc. PROCEDURE
(a) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Signal Check. (b) Using the Techstream, perform a Test Mode (Signal Check) inspection sensor check and check that speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete. Click here
OK: Speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete. NOTICE:
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Toyota Tundra Service Manual > Vehicle Stability Control System: Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE OPERATION If there is a problem with sensor signals or actuator systems, the skid control ECU prohibits power supply to the brake actuator assembly and informs the ECM of a VSC system malfunction. The brake actuator assembly turns off the solenoids and the ECM stops its VSC ...