System Description

SYSTEM

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 12V battery from over-discharge when the ignition switch is turned OFF with the exterior lamp ON.
*: Headlamp (LO/HI), parking lamp, tail lamp, license plate lamp, side marker lamp and front fog lamp

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
ON (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.