Toyota CH-R Service Manual: ABS 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.

Click here

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

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

Click here

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B

B

INSPECT CAN COMMUNICATION SYSTEM

A

2.

PERFORM ACTIVE TEST USING TECHSTREAM (ABS WARNING LIGHT)

(a) Select the Active Test on the Techstream.

Click here

Chassis > ABS/VSC/TRAC/EPB > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

ABS Warning Light

ABS warning light

Warning light ON/OFF

Observe combination meter assembly

Chassis > ABS/VSC/TRAC/EPB > Active Test

Tester Display

ABS Warning Light

(b) Select the Data List on the Techstream.

Click here

Chassis > ABS/VSC/TRAC/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

ABS Warning Light

ABS warning light

ON or OFF

ON: Warning light on

OFF: Warning light off

-

Chassis > ABS/VSC/TRAC/EPB > Data List

Tester Display

ABS Warning Light

(c) Check the operating condition of the ABS warning light when operating it using the Techstream.

Result

Proceed to

ABS warning light in the Data List does not change using the Active Test.

A

ABS warning light in the Data List turns ON/OFF using the Active Test.

B

A

REPLACE BRAKE ACTUATOR ASSEMBLY

B

3.

INSPECT COMBINATION METER ASSEMBLY

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

Click here

Body Electrical > Combination Meter > Active Test

Tester Display

Indicat. Lamp ABS

(b) Check the combination meter assembly.

OK:

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

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

INSPECT METER / GAUGE SYSTEM

    Engine Control System Malfunction (C1201)
    DESCRIPTION If a malfunction in the SFI system is detected, the operation of VSC and TRAC is prohibited by the fail-safe function. When the signals from the engine are received normally, fail-saf ...

    Brake Warning Light Remains ON
    DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. If any of the following is detected, the brake system warning light ...

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