Brake Control Warning Light does not Come ON
Circuit diagnosis
WIRING DIAGRAM
(Click here).INSPECTION PROCEDURE
- NOTICE:
- When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (Click here).
| 1. INSPECT CAN COMMUNICATION SYSTEM |
Check if the CAN communication system DTC is output (Click here for LHD, for Click here RHD).
- Result:
Condition
Proceed To
DTC is not output
A
DTC is output
B
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| A | |
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| 2. INSPECT MULTIPLEX COMMUNICATION SYSTEM |
Check if the multiplex communication system DTC is output (Click here).
- Result:
Condition
Proceed To
DTC is not output
A
DTC is output
B
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| A | |
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| 3. INSPECT BRAKE CONTROL WARNING LIGHT |
Connect the intelligent tester to the DLC3.
Turn the ignition switch on.
Select the "ECB WARN LAMP" in the ACTIVE TEST and operate the brake control warning light by the intelligent tester.
ABS / VSC / TRAC: Item
(Display)
Vehicle Condition/
Test Details
Diagnostic Note
ECB WARN LAMP
Turns brake control warning light
ON/OFF
Observe combination meter
Check that "ON" and "OFF" of the brake control warning lights are indicated on the combination meter when using the intelligent tester.
- OK:
- The brake control warning lights turn on or off in accordance with the operation using the intelligent tester.
- HINT:
- If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (Click here).
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| OK | ||
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| 4. INSPECT COMBINATION METER ASSEMBLY |
Check the combination meter assembly (Click here).
- HINT:
- If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (Click here).
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| OK | ||
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