DESCRIPTION When TRAC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred. When a communication malfunction with the ECM is detected, TRAC and VSC are disabled. Also, TRAC and VSC are disabled when a DTC is stored. CAUTION / NOTICE / HINT NOTICE: After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform system variant learning and acceleration sensor zero point calibration. Click here PROCEDURE
(a) Check whether the slip indicator light was illuminated when VSC did not operate. OK: The slip indicator light was illuminated. HINT: When a DTC is stored, the slip indicator light is illuminated and VSC does not operate due to the fail-safe function. (b) Check whether the vehicle speed was 15 km/h (9 mph) or less when VSC did not operate. OK: The vehicle speed was 15 km/h (9 mph) or less. HINT: VSC does not operate when the vehicle speed is 15 km/h (9 mph) or less. (c) Check whether the vehicle was driven straight for a few seconds at 15 km/h (9 mph) or more. OK: The vehicle was not driven straight for a few seconds at 15 km/h (9 mph) or more. HINT: When the ignition switch is turned to ON, as steering angle sensor zero point calibration is not performed below 12.9 km/h (8 mph), VSC will not operate until the vehicle is driven straight for a few seconds at 12.9 km/h (8 mph) or more.
(a) Clear the DTCs. (b) Turn the ignition switch off. (c) Turn the ignition switch to ON. (d) Check the DTCs (vehicle stability control system) that are output.
(a) Check that the tire of each wheel is the correct size. Click here OK: The tire of each wheel is the correct size.
(a) Turn the ignition switch off. (b) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly. for Column Shift Type: Click here for Floor Shift Type: Click here
OK: The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque. The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.
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Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be dis ...