Hyundai Tucson: BCM (Body Control Module) / Body Control Module (BCM) Description and Operation

Hyundai Tucson (LM) 2010-2015 Service Manual / Body Electrical System / BCM (Body Control Module) / Body Control Module (BCM) Description and Operation

Body Control Module (BCM) Funtionsscription

Function	Description
FRONT WASHER LINKED WIPER	x With IGN2 ON, turning ON the WasherSW turns ON the Wiper and turning OFF the WasherSW keeps Wiper output for 2.5~3.8 seconds then turns OFF.
INT WIPER	x With IGN2 ON, turning ON the FRWiperIntSW operates the Wiper per 2.2~10.0 seconds depending on INT VOLUME value.
MIST WIPER	x Turning ON the MistSW with IGN2 ON will keep the Wiper ON.
REAR WASHER LINKED WIPER	x With IGN2 ON, turning ON the RRWasherSW turns ON the RearWiper and turning OFF the RRWasherSW keeps RearWiper output for 2.5~3.8 seconds then turns OFF.
REAR WIPER ON	x Turning ON the RRWiperOnSW with IGN2 ON will keep the RearWiper ON.
REAR INT WIPER	x With IGN2 ON, turning ON the RRWiperINTSW operates the RearWiper per 6 seconds.
(Europe) DRIVER SEAT SEATBELT REMINDER	x Warning and pattern mode for driving without fastening according to DRV Seat Belt fasten status.
(Europe) PASSENGER SEATBELT REMINDER	x Warning and pattern mode for driving without fastening according to AST Seat Belt fasten status.
WATERPROOF SBW	x Warning activation according to DRV Seat Belt fasten status.
(North America ) DRIVER SEAT SBW	x Warning and pattern mode for driving without fastening according to DRV Seat Belt fasten status.
(North America ) PASSENGER SBW	x Warning and pattern mode for driving without fastening according to AST Seat Belt fasten status.
PARKING START WARNING	x Outputs warning sound if IGN1 ON, ParkingBrakeSW ON & Vehicle speed over 10km/h.
ESC OFF 2STEP WARNING	x Outputs warning sound when C_ESCOffStep 2Step (CAN) Signal OFF -> ON.
PARNORAMAROOF OPEN WARNING	x Outputs elert when SUNROOF OPEN SW ON, KEY ON -> OFF & DRV DOOR OPEN.
RPAS WARNING	x With Inhibit R ON, it gets RPAS SENSOR warning level through LIN and rings alarm.
SMK WARNING	x IDOUT WNG
	x ESCL_Notlocked_Warning
	x ESCL_NotUnlocked Warning
	x SSB_Warning
	x Outputs alarm if Vehicle Not P Warning is input.
KEY OPERATED WARNING	x Outputs alarm per 0.6 second if DRV DOOR SW ON with KEY IN ON or ACC ON.
Rhostst Detent WARNING	x Outputs warning sound when C_Rheostat_Detent_Warning (CAN) signal turns OFF -> ON
Rhostst Detent WARNING	with L_IGN1 = ON & C_INTTailON = ON.
OVER SPEED WARNING	x Outputs warning sound if C_OverSpeedCtrl = ON with IGN ON.
REAR DEFOGGER	x Keeps output for 20 minutes if Defogger SW ON with IGN1 ON & ALT’L ON.
POWER WINDOW	x Turns ON the Pwdw & SafetyPwdw output with IGN1 ON.
	x Keeps output for 30 seconds with IGN1 OFF.
	x Turns OFF the output if DRV or AST Door Open during the 30 second output.
TAIL LAMP AUTO CUT	x Turns OFF the TailLamp output if Key OFF and DRV Door OPEN when TailLampSW ON with Key or ACC or IGN ON.
TAIL LAMP AUTO CUT	x Turns ON the TailLamp output when output is OFF and TailLampSW OFF turns back to ON.
Europe	x Turns ON the Dedicated DRL Output if IGN2 ON & ALT’L ON & DRL OPTION ON.
Dedicated DRL	x Turns OFF the DRL Lamp when TailLamp ON with Dedicated DRL ON.
North America DRL	x DRL ON when IGN2 ON, ALT’L ON & DRL OPTION ON
North America DRL	x DRL OFF when HEADLAMP ON, HEAD HIGH SW ON or PARK BRAKE ON.
AUTOLIGHT	x If Sensor ON with IGN1 ON & AutolightSW ON, it turns ON the Tail and Head Lamp after 2.5 seconds.
AUTOLIGHT	x If Sensor OFF, it turns OFF the LAMP after 5 seconds.
FRONT FOG LAMP	x Turn ON the Lamp if FrontFogSW is ON with IGN2 ON & TailLamp ON
REAR FOG LAMP	x Turns ON the LAMP if RearFogSW is ON with IGN2 ON, TailLamp ON & (HeadLamp ON \|\| FrontFogLamp ON)
ROOMLAMP	x ON for 30 seconds if 4 DOOR CLOSE & TX UNLOCK or 4 DOOR CLOSE & KEY
	ON -> OFF.
	x ON for 20 minutes iff IGN KEY OFF & DOOR OPEN.
	x Keeps ON if IGN ON during ON for 20 minutes.
	x ON for 30 seconds if DOOR CLOSE during ON for 20 minutes.
	x Photosensitive if DOOR LOCK during ON for 30 seconds
HEADLAMP	x Turn ON the Lamp if HeadLampSW ON with IGN1 ON
ESCORT	x Keeps Lamp output for 20 minutes if IGN OFF with HeadLamp ON.
	x Keeps ON for 30 seconds if DRV door OPEN then CLOSE during ON for 20 minutes.
	x Turns OFF the Lamp if TX LOCK twice while keeping HeadLamp ON.
CONERING LAMP	x Turns RIGHT(LEFT) CONERING LAMP ON if IGN1 ON & HeadLamp ON & RIGHT(LEFT) TURN SIGNAL ON.
HEADLAMP WELCOME	x Turns ON the HeadLamp and TailLamp for 15 seconds if TX UNLOCK when ALL DOOR CLOSE, ALL DOOR LOCK & KEY OUT (with HeadLamp SW ON or AutlightSW ON and Sensor ON).
HEADLAMP WELCOME	x Turns OFF the output if TX LOCK, TX UNLOCK, IGN1 and HeadlampSW OFF, and AutolightSW OFF during Lamp ON.
INTERIOR LAMP AUTOCUT	x Turns ON the output if ACC and IGN ON.
INTERIOR LAMP AUTOCUT	x Keeps output for 20 minutes if ACC OFF.
TURN SIGNAL LAMP	x Turns ON the Left Turn Lamp if IGN2 ON & TURN LH SW ON.
TURN SIGNAL LAMP	x Turns ON the Right Turn Lamp if IGN2 ON & TURN RH SW ON.
HAZARD	x Controls ON/OFF for Hazard Lamp when Hazard SW ON.
FRONT DEICER	x Keeps output for 20 minutes if L_FRT DEICER SW turns ON after L_ALTL ON with L_IGN1 ON.
REAR SEAT WARM REALY	x Outputs when IGN1 = ON & REAR LEFT SEAT WARMER SW = OFF -> ON.
ARM SOL	x Turns ON the ATM SOL to allow SHIFT LEVER change if IGN ON & BRAKE SW ON.
KEY SOL	x Turns ON the KEY SOL output to keep KEY in if KEY INTERLOCK SW is OFF with IGN ON or ACC ON.
IGN KEY REMINDER	x Outputs UNLOCK if KNOB becomes LOCK when DRV or AST OPEN with Key IN.
PASSIVE REMINDER	x Start CENTRAL UNLOCK output if PassiveUnlock Signal received
CRASH UNLOCK	x Keeps CENTRAL UNLOCK output for 5 seconds if CRASH Signal input with Key IN or ACC or IGN ON.
VEHICLE SPEED LINKED	x Outputs CENTRAL LOCK if vehicle speed exceeds 15km/h with IGN1 ON & ALT’L ON and ANY KNOB UNLOCK.
AUTO DOOR LOCK
SHIFT LINKED	x LOCKS all doors if P gear enters R, N, and D with ALL DOOR CLOSE at Engine Start and ANY KNOB UNLOCK.
AUTO DOOR LOCK
KEY LINKED	x Outputs CENTRAL UNLOCK if KEY OFF EVENT with ANY KNOB LOCK.
AUTO DOOR UNLOCK
SHIFT LINKED	x UNLOCKS all doors if R, N, and D gears enter P with ALL DOOR CLOSE at Engine Start and ANY KNOB UNLOCK.
AUTO DOOR UNLOCK
AV UNLOCK SIGNAL	x Outputs AV UNLOCK if TX UNLOCK input with Key OUT.
KEY HOLE ILLUMI	x Turns ON the KEY HOLE ILLUMI when IGN 1 OFF with DRV DOOR OPEN or AST DOOR OPEN.
LIFT GATE RELEASE	x Turns ON the LiftgateRelease Relay when Liftgate Open SW ON if ALL DOOR UNLOCK.
OUTSIDE MIRROR AUTOFOLDING	x Begins OUTSIDE MIRROR FOLDING/UNFOLDING with sync if TX, SMKRKE or Passive Lock/Unlock.
REMOTE STARTING	x Turns ON/OFF the engine remotely by receiving signal from TMU.
ANTITHEFT	x Enters ARMWAIT Mode for 30 seconds if ALL KNOB LOCK after TX LOCK with ALL DOOR CLOSE & KEY OUT.
	x Enters ARM status after the 30 second ARMWAIT Mode.
	x Outputs ALARM for 27 seconds if HOOD or 4 DOOR or Liftgate becomes Open during ARM status.

Body Control Module (BCM) Schematic Diagrams

Circuit Diagram ...

Body Control Module (BCM) Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the center facia panel. (Refer to BD group - "Crash pad center panel") 3. Loosen the nut and bolt from BCM. 4. Disco ...

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