Vehicle Stability Control System - Brake Warning Light Does Not Come On
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT BRAKE WARNING LIGHT
CHECK CAN COMMUNICATION LINE
CHECK DTC (CAN COMMUNICATION SYSTEM)
PERFORM ACTIVE TEST USING GTS (INDICAT. LAMP BRAKE)
VEHICLE STABILITY CONTROL SYSTEM - Brake Warning Light does not Come ON
DESCRIPTION
Refer to Brake Warning Light Remains ON ().
WIRING DIAGRAM
Refer to Brake Warning Light Remains ON ().
INSPECTION PROCEDURE
- After replacing the master cylinder solenoid, perform zero point calibration and store the system information ().
| 1.INSPECT BRAKE WARNING LIGHT |
Disconnect the A24 skid control ECU (master cylinder solenoid) connector.
Turn the ignition switch to ON.
Check that the brake warning light comes on.
- OK:
- Brake warning light comes on.
Result| Result | Proceed to |
| NG | A |
| OK (for LHD) | B |
| OK (for RHD) | C |
| | REPLACE MASTER CYLINDER SOLENOID ()
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| | REPLACE MASTER CYLINDER SOLENOID ()
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| 2.CHECK CAN COMMUNICATION LINE
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Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Select "CAN Bus Check" from the System Selection Menu screen, and follow the prompts on the screen to inspect the CAN Bus.
- OK:
- "CAN Bus Check" indicates no malfunctions in CAN communication.
Result| Result | Proceed to |
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 3.CHECK DTC (CAN COMMUNICATION SYSTEM)
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Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Check for DTCs (for LHD: , for RHD: ).
Result| Result | Proceed to |
| CAN system DTC is not output | A |
| CAN system DTC is output (for LHD) | B |
| CAN system DTC is output (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 4.PERFORM ACTIVE TEST USING GTS (INDICAT. LAMP BRAKE)
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Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Enter the following menus: Body Electrical / Combination Meter / Active Test.
Check the condition of the brake warning light by operating the GTS.
Combination Meter| Tester Display | Test Part | Control Range | Diagnostic Note |
| Indicat. Lamp Brake | Brake Warning Light | ON or OFF | Perform the test with the vehicle stopped and engine idling. |
- OK:
- The warning light turns on when operating the GTS.
| | GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| OK | |
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| CHECK FOR INTERMITTENT PROBLEMS ()
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