Toyota Tundra Service Manual: Brake Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

• When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration zero point calibration.

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

PROCEDURE

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

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B

INSPECT CAN COMMUNICATION SYSTEM

A

(a) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.

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

A

REPLACE BRAKE ACTUATOR ASSEMBLY

B

(a) Enter the following menus: Body Electrical / Combination Meter / Active Test.

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

(c) Check the combination meter assembly.

OK:

The brake warning light turns on or off in accordance with the Techstream operation.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

INSPECT METER / GAUGE SYSTEM