TRUNK LID LIGHT (4SD)/LIFTGATE LIGHT (5HB)SM2760448
TRUNK LID LIGHT (4SD)/LIFTGATE LIGHT (5HB)

id091800903200


Purpose

• The trunk lid lights (4SD)/liftgate lights (5HB) are used to signal the following conditions to vehicles/people at the rear.
― Back-up lights: Signals that the vehicle is backing up.

Function

• The BCM sends the back-up light on request signal sent from the instrument cluster to the electrical supply unit (ESU) and the electrical supply unit (ESU) turns the back-up light on.

Construction

• The trunk lid light (4SD)/liftgate light (5HB) stores the back-up light bulb.
Note
• Fogging or condensation may occur inside the trunk lid lights (4SD)/liftgate lights (5HB), 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 (5HB) and it does not affect the light performance.
• Fogging or condensation occurring as a natural phenomenon will dissipate when the temperature inside the trunk lid light (4SD)/liftgate light (5HB) rises after the back-up light bulb is turned on and a period of time has elapsed.
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Operation


Back-up lights (ATX)

1.When the selector lever is in the R position with the ignition switched ON (engine off or on), the TCM sends (1) an R position signal to the instrument cluster via CAN communication.

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

3.The BCM sends (3) the back-up light on request signal to the electrical supply unit (ESU) via LIN communication.

4.When the electrical supply unit (ESU) receives the back-up light on request signal, it turns the back-up light on (4).

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Back-up lights (MTX)

1.When the shift lever is in the reverse position, the back-up light switch turns on (1).

2.When the back-up light switch is on with the ignition switched ON (engine off or on), the PCM detects (2) a back-up light switch on signal.

3.The PCM sends (3) the back-up light switch on signal to the instrument cluster via CAN communication.

4.When the instrument cluster receives the back-up light switch on signal, it sends (4) a back-up light on request signal to the BCM.

5.The BCM sends (5) the back-up light on request signal to the electrical supply unit (ESU) via LIN communication.

6.When the electrical supply unit (ESU) receives the back-up light on request signal, it turns the back-up light on (6).

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Fail-safe

• Not applicable