DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication. If the skid control ECU (brake booster with master cylinder assembly) stores a DTC, the brake warning light / yellow (minor malfunction) comes on in the combination meter assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory". Click here PROCEDURE
(a) Check if CAN communication system DTCs are output. Click here
(a) Check if the skid control ECU (brake booster with master cylinder assembly) connector is securely connected. OK: The connector is securely connected.
(a) Check the auxiliary battery voltage. Standard Voltage:
(a) Select the Data List on the Techstream. Click here Chassis > ABS/VSC/TRAC > Data List
(b) Check the Techstream display condition of the brake warning light / yellow (minor malfunction).
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Seat Heater System(for Hv Model): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the seat heater system (for HV model) may not operate. HINT: Use the table below to hel ...