System Description

EXTERIOR LAMP BATTERY SAVER SYSTEM

System Description


OUTLINE

- Exterior lamp battery saver system is controlled by each function of BCM and IPDM E/R.
- Combination switch reading function
- Headlamp control function
- Exterior lamp battery saver function
- Relay control function
- BCM turns the exterior lamp* OFF after a period of time to prevent the battery from over-discharge when the ignition switch is turned OFF with the exterior lamp ON.
*: Headlamp (LO/HI), parking lamp, tail lamp, side marker lamp, license plate lamp and front fog lamp
NOTE:
When the lighting switch is turned AUTO, the exterior lamp battery saver switches to the auto light system.
Refer to "System Diagram" System Diagram.

EXTERIOR LAMP BATTERY SAVER ACTIVATION

BCM activates the timer and turns the exterior lamp OFF 5 minutes after the ignition switch is turned from ON -> OFF with the exterior lamps ON.
NOTE:
- Headlamp control function turns the exterior lamps ON normally when the ignition switch is turned ACC or the engine started (both before and after the exterior lamp battery saver is turned OFF).
- The timer starts at the time that the lighting switch is turned from OFF -> 1ST or 2ND with the exterior lamp OFF.