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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Exterior Lighting System) >> System Description >> Component Parts >> Exterior Lighting System >> EXTERIOR LIGHTING SYSTEM: Component Description
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EXTERIOR LIGHTING SYSTEM: Component Description

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
Part Description
BCM Controls the exterior lighting system.
ECM Transmits engine speed signal to AFS control unit. (via CAN communication)
TCM Transmits Shift position signal to AFS control unit. (via CAN communication)
Air bag diagnosis sensor unit Transmits air bag signal to BCM.
IPDM E/R Controls the integrated relay, and supplies voltage to the load according to the request from BCM (via CAN communication).
AFS control unit AFS control unit judges the vehicle condition from each signal. AFS control unit controls AFS function and the headlamp aiming.
Combination meter
  • Outputs the vehicle speed signal (8-pulse) to AFS control unit.
  • Blinks the turn signal indicator lamp and outputs the turn signal operating sound with integrated buzzer according to the request from BCM (via CAN communication).
  • Turns the tail lamp indicator lamp, high beam indicator lamp and front fog lamp indicator lamp ON according to the request from BCM (via CAN communication).
  • Turns the AFS OFF indicator lamp ON/OFF/blinking according to the request from AFS control unit (via CAN communication).
Headlamp assembly Xenon bulb Refer to "FRONT COMBINATION LAMP: XENON HEADLAMP ".
HID control unit Refer to "FRONT COMBINATION LAMP: HID CONTROL UNIT ".
High beam solenoid Refer to "FRONT COMBINATION LAMP: HIGH BEAM SOLENOID ".
Aiming motor Refer to "FRONT COMBINATION LAMP: HEADLAMP AIMING MOTOR ".
Swivel actuator Refer to "FRONT COMBINATION LAMP: SWIVEL ACTUATOR ".
Height sensor The sensor angle of the unloaded vehicle position is the reference value.
Optical sensor Optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to BCM.
Steering angle sensor Transmits Steering angle sensor signal to AFS control unit. (via CAN communication)
Combination switch (Lighting & turn signal switch) Refer to "COMBINATION SWITCH READING SYSTEM: SYSTEM DESCRIPTION ".
AFS switch
  • AFS switch is integrated in meter control switch.
  • Inputs the AFS switch signal to AFS control unit.
Door switch Inputs the door switch signal to BCM.
Hazard switch Inputs the hazard switch signal to BCM.
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