TRUNK LID LIGHT (4SD)/LIFTGATE LIGHT (WGN)

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Purpose

•  The trunk lid lights (4SD)/liftgate lights (WGN) are used to signal the following conditions to vehicles/people at the rear.
―  Rear fog light: The vehicle's presence is signaled to vehicles at the rear by the illumination of the rear fog light during poor weather conditions such as dense fog. (With rear fog light)
―  Back-up lights: Signals that the vehicle is backing up.
―  Taillights: Signals the presence of the vehicle during nighttime.

Function

•  The rear fog light illuminates when all of the following conditions are met: (With rear fog light)
―  Ignition switch ON (engine off or on)
―  Headlights LO or front fog lights on
―  Rear fog light switch ON
•  The back-up lights are illuminated in conjunction with the selector lever (ATX)/shift lever (MTX) operation.
•  The taillights are illuminated in conjunction with the light switch operation (TNS).

Construction

•  A bulb type or LED type is available for the trunk lid light (4SD)/liftgate light (WGN).

Bulb type

•  The trunk lid lights (4SD)/liftgate lights (WGN) groups the following parts.
―  Rear fog light (With rear fog light)
―  Back-up light
―  Taillight
Note
•  Fogging or condensation may occur inside the trunk lid lights (4SD)/liftgate lights (WGN), however, it is a natural phenomenon occurring as a result of a temperature difference between the interior and exterior of the trunk lid lights (4SD)/liftgate lights (WGN) and has no effect on the light performance. Fogging or condensation will dissipate when the temperature inside the trunk lid lights (4SD)/liftgate lights (WGN) rises after the back-up light is illuminated and a period of time has elapsed.
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LED type

•  The trunk lid lights (4SD)/liftgate lights (WGN) groups the rear fog light (with rear fog light)/back-up light.
•  The trunk lid lights (4SD)/liftgate lights (WGN) is integrated with the taillight (LED)
Note
•  Fogging or condensation may occur inside the trunk lid lights (4SD)/liftgate lights (WGN), however, it is a natural phenomenon occurring as a result of a temperature difference between the interior and exterior of the trunk lid lights (4SD)/liftgate lights (WGN) and has no effect on the light performance. Fogging or condensation will dissipate when the temperature inside the trunk lid lights (4SD)/liftgate lights (WGN) rises after the back-up light is illuminated and a period of time has elapsed.
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Operation


Rear fog light (With rear fog light)

1.  If the fog light switch is operated to the R.FOG position, the start stop unit detects the rear fog light switch signal.

2.  The start stop unit sends the rear fog light switch ON signal to the front body control module (FBCM) via the CAN communication.

3.  When the front body control module (FBCM) receives the rear fog light switch ON signal while the headlights or the front fog lights are illuminated, it sends the rear fog light illumination request signal to the instrument cluster via the CAN communication.

4.  The instrument cluster sends the rear fog light illumination request signal to the rear body control module (RBCM).

5.  When the rear body control module (RBCM) receives the rear fog light illumination request signal, it illuminates the rear fog light.

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Taillights

1.  When the light switch is operated to the TNS position, a light switch TNS signal is input to the start stop unit.

2.  The start stop unit sends the light switch TNS signal to the front body control module (FBCM).

3.  When the front body control module (FBCM) receives the light switch TNS signal, it turns the transistor inside the front body control module (FBCM) on.

4.  When the transistor inside the front body control module (FBCM) turns on, the taillights are illuminated.

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Back-up lights (ATX)

1.  When the selector lever is operated to the R position, the TCM sends a R position signal to the PCM.

2.  When the PCM receives the R position signal, it sends a back-up light on signal to the instrument cluster.

3.  The instrument cluster sends the back-up light on signal to the rear body control module (RBCM).

4.  When the rear body control module (RBCM) receives the back-up light on signal, the back-up lights are illuminated.

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Back-up lights (MTX)

1.  When the shift lever is operated to the reverse position, the back-up light switch is turned on.

2.  When the back-up light switch is turned on, a back-up light on signal is input to the PCM.

3.  The PCM sends the back-up light on signal to the instrument cluster.

4.  The instrument cluster sends the back-up light on signal to the rear body control module (RBCM).

5.  When the rear body control module (RBCM) receives the back-up light on signal, the back-up lights are illuminated.

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Fail-safe

•  Function not equipped.