DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. The slip indicator light blinks during VSC and/or TRAC operation. If a malfunction is detected, the slip indicator light comes on to warn the driver. Click here WIRING DIAGRAM  CAUTION / NOTICE / HINT NOTICE: When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration. Click here
PROCEDURE
(a) Check if CAN communication system DTCs are output. Click here
(a) Check if the skid control ECU (brake actuator assembly) connector is securely connected. OK: The connector is securely connected.
(a) Check the battery voltage. Standard Voltage:
(a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List. ABS/VSC/TRAC
(d) Check the Techstream display condition of the slip indicator light.
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Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Four Wheel Drive (4WD) Low Switch Circuit Range / Performance (P2772)
DESCRIPTION When the transfer is switching between 4H and 4L, the H4 and L4 terminals of the transfer indicator switch are in one of the ON/OFF combinations listed in the table below. Terminal In 4H Switching between 4H and 4L In 4L H4 OFF (OPEN) ON (GND) ON (GND) L4 OFF (OPEN) OFF (OPEN) ON (GND) T ...
