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.

am2zzn00004607

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).

am2zzn00003794

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).

am2zzn00003795

Fail-safe

• Not applicable