Toyota Avalon Service & Repair Manual: Brake Control Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication.

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".

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PROCEDURE

(a) Check if CAN communication system DTCs are output.

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B

INSPECT CAN COMMUNICATION SYSTEM

A

(a) Select the Active Test on the Techstream.

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(b) Check the operating condition of the brake warning light / yellow (minor malfunction) when operating it using the Techstream.

A

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

B

(a) Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream.

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(b) Check the combination meter assembly.

OK:

The brake warning light / yellow (minor malfunction) turns on or off in accordance with Techstream operation.

OK

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

NG

INSPECT METER / GAUGE SYSTEM