BRAKE SYSTEM/ELECTRIC PARKING BRAKE WARNING LIGHT
id041200301000
Purpose/Function
• The brake system warning light and electric parking brake warning light notify the driver that the vehicle is under the following conditions.
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― Brake system warning light
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• The electric parking brake is operating.
• There is a malfunction in the electric parking brake system.
― Electric parking brake warning light
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• There is a malfunction in the electric parking brake system.
• The mode is switched to the maintenance mode.
• The mode is switched to the electric parking brake inspection mode.
Construction/Operation
• The brake system warning light and electric parking brake warning light are integrated with the instrument cluster.
• When the ignition is switched ON and if the system and CAN line of the electric parking brake are normal, the brake system warning light and electric parking brake warning light turn on for an open-circuit check and turn off after approx. 3 s. At this time, when the electric parking brake is operating, the brake system warning light remains turned on. However, if the electric parking brake is released, the light turns off.
• When the electric parking brake is operating, released, or malfunctioning, the brake system warning light and electric parking brake warning light operate as indicated in the table below.
Brake system warning light and electric parking brake warning light operation table
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Condition
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Brake system warning light
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Electric parking brake warning light
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The electric parking brake is released.
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Off
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Off
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The electric parking brake is operating.
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On
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Off
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The electric parking brake switch is operated (pulled/pressed) while the switch is malfunctioning.
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Flash
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On
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There is a malfunction in the parking brake force of the electric parking brake.
• The parking brake is operating/released on only one side of the electric parking brake motor gear unit (LH/RH).
• Due to an electric parking brake motor gear unit motor malfunction, the operation stops during the parking brake operation or release.
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There is a malfunction in the electric parking brake system.
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Off*1 or on*2
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On
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The mode is switched to the maintenance mode.
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Off
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On
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The mode is switched to the electric parking brake inspection mode.
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Off*1 or on*2
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On
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*1 :When releasing electric parking brake
*2 :When operating electric parking brake
• The electric parking brake control module sends a brake system warning light on request signal during the electric parking brake operation. When the instrument cluster receives the brake system warning light on request signal, the transistor is turned on and the brake system warning light turns on.
• If there is a malfunction in the electric parking brake, the electric parking brake control module sends the electric parking brake warning light on request signal and brake system warning light on request signal. When the instrument cluster receives the electric parking brake warning light on request signal and brake system warning light on request signal, the transistor is turned on and the brake system warning light and electric parking brake warning light turn on.
• If there is a malfunction in the electric parking brake, the electric parking brake control module sends a brake system warning light flash request signal. When the instrument cluster receives the brake system warning light flash request signal, the transistor is turned on intermittently and the brake system warning light flashes.
