Brake Warning Light does not Come ON

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: Brake Warning Light does not Come ON
- Brake Warning Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.

WIRING DIAGRAM

Refer to Brake Warning Light Remains ON Brake Warning Light Remains ON.

INSPECTION PROCEDURE

NOTICE:
* When replacing the brake actuator assembly, perform zero point calibration and store system information Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication system DTC is output Diagnosis System.

Result





B -- INSPECT CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK BRAKE WARNING LIGHT

(a) Disconnect the skid control ECU connector.

(b) Turn the ignition switch to ON.

(c) Check that the brake warning light comes on.

OK:

The brake warning light comes on.

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

NG -- PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT)

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal

3. PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT)

(a) Turn the ignition switch off.

(b) Reconnect the skid control ECU connector.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

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

(g) Select the Active Test on the Techstream.

Combination Meter





(h) Check that the Brake warning light on the combination meter turns on or off in accordance with the Techstream operation.

OK:

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

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal