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)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

After replacing the master cylinder solenoid, perform zero point calibration and store the system information (Click here).

1. Disconnect the A24 skid control ECU (master cylinder solenoid) connector.
   

2. Turn the ignition switch to ON.
   

3. 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

1. Turn the ignition switch off.
   

2. Connect the GTS to the DLC3.
   

3. Turn the ignition switch to ON and the GTS on.
   

4. 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 (with Central Gateway ECU))	B
   NG (for LHD (without Central Gateway ECU))	C
   NG (for RHD (with Central Gateway ECU))	D
   NG (for RHD (without Central Gateway ECU))	E

1. Turn the ignition switch off.
   

2. Connect the GTS to the DLC3.
   

3. Turn the ignition switch to ON and the GTS on.
   

4. for LHD (with Central Gateway ECU):
   Check for DTCs (Click here).
   

5. for LHD (without Central Gateway ECU):
   Check for DTCs (Click here).
   

6. for RHD (with Central Gateway ECU):
   Check for DTCs (Click here).
   

7. for RHD (without Central Gateway ECU):
   Check for DTCs (Click here).
   
   

   Result

   Result	Proceed to
   CAN DTC is not output	A
   CAN DTC is output (for LHD (with Central Gateway ECU))	B
   CAN DTC is output (for LHD (without Central Gateway ECU))	C
   CAN DTC is output (for RHD (with Central Gateway ECU))	D
   CAN DTC is output (for RHD (without Central Gateway ECU))	E

1. Turn the ignition switch off.
   

2. Connect the GTS to the DLC3.
   

3. Turn the ignition switch to ON and the GTS on.
   

4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
   

5. 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.