BRAKE LIGHT UNIT

id091800400200

Purpose/Function

• The brake light unit turns on the brake lights and high-mount brake light according to the brake pedal operation or a illumination request signal from the rear body control module (RBCM).

Construction

• The brake light unit is installed inside the trunk side trim (LH).

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Operation

Operation due to brake pedal operation

1. When the brake pedal is depressed, the brake switch (No.1 signal) turns on (1).

2. When the brake switch (No.1 signal) turns on, the brake light unit detects (2) a brake switch (No.1 signal) on signal.

3. When the brake light unit detects a brake switch (No.1 signal) on signal, it turn on (3) the brake light and high-mount brake light.

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Operation due to operation request signal from rear body control module (RBCM)

Note

• For the operation conditions, refer to the followings:

― Advanced smart city brake support (advanced SCBS) (See ADVANCED SMART CITY BRAKE SUPPORT (ADVANCED SCBS).)

― Smart city brake support [forward] (SCBS F) (See SMART CITY BRAKE SUPPORT [FORWARD] (SCBS F).)

― Smart city brake support [reverse] (SCBS R) (See SMART CITY BRAKE SUPPORT [REVERSE] (SCBS R).)

― Smart brake support (SBS) (See SMART BRAKE SUPPORT (SBS).)

1. When all the operation conditions are met, the rear body control module (RBCM) turns the transistor on (1) in the rear body control module (RBCM).

2. When the transistor in the rear body control module (RBCM) turns on, the transistor A in the brake light unit turns on (2).

3. When the transistor A in the brake light unit turns on, the transistor B in the brake light unit turns on (3).

4. When the transistor B in the brake light unit turns on, the brake light and high-mount brake light turn on (4).

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Fail-safe

• Not applicable