|
|
SYSTEM EXL-17 < SYSTEM DESCRIPTION > [HALOGEN HEADLAMP] C D E F G H I J K M A B EXL N O P FRONT FOG LAMP SYSTEM : System Description INFOID:0000000011280713 SYSTEM DIAGRAM OUTLINE Front fog lamp is controlled by combination switch reading function, front fog lamp control function of BCM, and smart FET function of IPDM E/R. FRONT FOG LAMP OPERATION • BCM detects the combination switch condition by the combination switch reading function. • BCM transmits the front fog lights request signal to IPDM E/R and the combination meter via CAN communi- cation according to the front fog lamp ON condition. Front fog lamp ON condition: - Front fog lamp switch ON, and any of the following conditions are satisfied (except for the high beam ON): • Lighting switch 2ND • Lighting switch AUTO and the ignition switch ON IPDM E/R turns the front fog lamp ON according to the front fog lights request signal. Combination meter turns the front fog lamp indicator lamp ON according to the front fog lights request signal. FRONT FOG LAMP SYSTEM : Fail-Safe INFOID:0000000011280714 CAN COMMUNICATION CONTROL When CAN communication with BCM is impossible, IPDM E/R performs fail-safe control. After CAN communi- cation recovers normally, it also returns to normal control. If no CAN communication is available with BCM EXTERIOR LAMP BATTERY SAVER SYSTEM ALLIA1611GB Control part Fail-safe operation Front fog lamp Front fog lamp OFF |