Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Open Circuit in ABS Solenoid Relay Circuit (C146E)

DESCRIPTION

The ABS solenoid relay is built into the skid control ECU in the brake actuator assembly. The ABS solenoid relay supplies power to the ABS and TRAC solenoids. The skid control ECU (brake actuator assembly) detects an ABS solenoid relay malfunction by performing a self check and relay operation check.

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

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.

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• Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

(a) Replace the skid control ECU (brake actuator assembly).

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HINT:

This DTC is output when the skid control ECU (brake actuator assembly) detects a malfunction in an internal circuit.

(b) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Test Mode.

(c) Perform system variant learning and acceleration sensor zero point calibration.

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(d) Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Signal Check.

(e) Perform the sensor check using the Test Mode (Signal Check) procedure.

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NEXT

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