DESCRIPTION If a malfunction is detected in the power supply circuit, the skid control ECU (brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS operation. This DTC is stored when the +BS terminal voltage deviates due to a malfunction in a power supply or charging system circuit such as the battery or alternator circuit, etc.
WIRING DIAGRAM Refer to DTC C1241. Click here CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Check the battery voltage. Standard Voltage:
(b) Disconnect the A57 skid control ECU (brake actuator assembly) connector. (c) Check both the connector case and the terminals for deformation and corrosion. OK: No deformation or corrosion. (d) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(a) Turn the ignition switch off. (b) Reconnect the A57 skid control ECU (brake actuator assembly) connector. (c) Clear the DTCs. Click here (d) Turn the ignition switch off. (e) Start the engine. (f) Perform a road test. (g) Check if the same DTC is output. Click here
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Toyota Tundra Service Manual > Trailer Brake Control Ecu: Components
COMPONENTS ILLUSTRATION *1 COWL SIDE TRIM BOARD RH *2 FRONT DOOR SCUFF PLATE RH *3 INSTRUMENT SIDE PANEL RH *4 LOWER INSTRUMENT PANEL *5 LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY RH *6 LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY *7 NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY *8 TRAILER B ...