DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) detects a drop in accumulator pressure according to the signals from the accumulator pressure sensor, then operates and stops the motor relay as well as the pump motor. The skid control ECU (brake booster with master cylinder assembly) troubleshoots the built-in motor relay drive circuit, and stores this DTC when a malfunction is detected.
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) Clear the DTCs. Click here Chassis > ABS/VSC/TRAC > Clear DTCs(b) Turn the power switch off. (c) Turn the power switch on (IG). (d) Check if the same DTC is output. Click here Chassis > ABS/VSC/TRAC > Trouble Codes
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Power Steering System(for Gasoline Model): Torque Sensor Zero Point Adjustment Incomplete (C1516)
DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration has not completed. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Ret ...