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Brake Warning Light
 
 
DESIGN/PURPOSE
  • The brake warning light warns the driver of brake fluid shortages.
    • For USA
    • Except for USA
  • The brake warning light warns the driver of a malfunction in the EBD function of ABS actuator and electric unit (control unit).
noteThe brake warning light may turn ON simultaneously with the ABS warning light, ASC warning light. For details. Refer to System Description.
 
 
BULB CHECK
The brake warning light turns ON and stays ON for 2 second after turning ON the ignition switch.
 
 
SYNCHRONIZATION WITH MASTER WARNING LIGHT
Not applicable
 
 
SYNCHRONIZATION WITH WARNING CHIME
Not applicable
 
 
OPERATION AT COMBINATION METER CAN COMMUNICATION CUT-OFF OR UNUSUAL SIGNAL
For actions on CAN communications blackout in the combination meter. Refer to Fail-Safe.
 
 
SYSTEM DIAGRAM
*: For DTCs that the brake warning light turns ON. Refer to DTC Index.
 
 
SIGNAL PATH
 
 
When Brake Fluid Is Insufficient
The combination meter turns ON/OFF the brake warning light, according to the ON/OFF state of the brake fluid level switch.
 
 
When The EBD Function Is In Abnormal State
  • The ABS actuator and electric unit (control unit) transmits a brake warning light signal to the combination meter via CAN communication when detecting a malfunction in the EBD function.
  • The combination meter turns ON the brake warning light when receiving a brake warning light signal.
  • For the relationship between warning light and DTC. Refer to DTC Index.
 
 
When The Brake Vacuum Sensor System Is In Abnormal State
  • The ABS actuator and electric unit (control unit) transmits a brake warning light signal to the combination meter via CAN communication when detecting a malfunction in the brake vacuum sensor system.
  • The combination meter turns ON the brake warning light when receiving a brake warning light signal.
  • For the relationship between warning light and DTC. Refer to DTC Index.
 
 
LIGHTING CONDITION
When any of the condition listed below is satisfied while the engine is running:
  • Brake fluid level switch ON.
  • A malfunction is detected in the EBD function of the ABS actuator and electric unit (control unit).
  • A malfunction is detected in the brake vacuum sensor system.
  • For the relationship between warning light and DTC. Refer to DTC Index.
 
 
SHUTOFF CONDITION
  • When the condition listed below is satisfied while the ignition switch ON:
    • Brake fluid level switch is OFF.
    • When EBD function of the ABS actuator and electric unit (control unit) is normal.
    • When brake vacuum sensor system is normal.
    • Erase DTC
  • The ignition switch is in a position other than ON (engine stop).
 
 
TIMING CHART