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 A28 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 engine switch off. (b) Reconnect the A28 skid control ECU (brake actuator assembly) connector. (c) Clear the DTCs. Chassis > ABS/VSC/TRAC/EPB > Clear DTCs(d) Turn the engine switch off. (e) Start the engine. (f) Perform a road test. (g) Check if the same DTC is output. Chassis > ABS/VSC/TRAC/EPB > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Repair Instruction: Inspection Mode Procedure
INSPECTION MODE PROCEDURE INSPECTION MODE (for HV Model) NOTICE: When operating the vehicle in an inspection mode for an operation such as a speedometer test, a DTC may be stored. Therefore, if the warning light illuminates, check for DTCs using the Techstream and clear the DTCs. HINT: If the engine ...