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.

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PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

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

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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