Multiplex Integrated Control System Description - Functional Control

MICU 

Power Supply Voltage Monitoring Function 

The MICU monitors the power supply voltage (backup voltage). If the voltage drops below 10 V, the MICU does not store DTCs.

	Input	Output
MICU	Battery voltage (VBU)
B-CAN		Under 10 V message

Entry Lights Control System (Map Lights)* 

The MICU controls the interior lights based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch	Interior lights
B-CAN	Keyless signal Keyless access key signal Welcome light signal

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Interior Lights Auto-Off Timer (Map Lights)* 

The MICU controls the interior lights based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch	Interior lights
B-CAN	Keyless signal Door lock signal Keyless access key signal 12 volt battery condition Welcome light signal

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Trunk Light 

The MICU controls the trunk light based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Trunk lid latch switch	Trunk light
B-CAN

Door Courtesy Light 

The MICU controls the door courtesy lights based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Driver's door switch Front passenger's door switch	Door courtesy lights
B-CAN

Power Door Locks* 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch	Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Keyless access key signal	Door lock message (LOCK) Door lock message (UNLOCK)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Auto Power Door Locks (LOCK Operation)* 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Transmission range switch P position (L4 engine) TCM P position (V6 engine) Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch Brake pedal position switch	Door lock actuators (LOCK)
B-CAN	Vehicle speed pulse signal	Door lock message (LOCK)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Auto Power Door Locks (UNLOCK Operation)* 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Transmission range switch P position (L4 engine) TCM P position (V6 engine) ACCESSORY (ACC) power supply Driver's door switch	Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Vehicle speed pulse signal	Door lock message (UNLOCK)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Auto Power Door Locks (LOCK/UNLOCK Switching Function) 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Transmission range switch P position (L4 engine) TCM P position (V6 engine) Driver's door switch	Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Vehicle speed pulse signal FOB ID data Customized mode data Customized data Diagnosis data	Door lock message (LOCK) Door lock message (UNLOCK)

Prevention of Key Locked Inside Vehicle 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	Key switch signal Driver's door switch	Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Keyless access signal	Door lock message (UNLOCK)

Collision Detection Signal (CDS) 

The MICU controls the door lock actuators based on inputs from IG1 switch and B-CAN data.

	Input	Output
MICU	IG1 power supply	Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	CDS signals	Door lock message (UNLOCK)

Door Lock Response Operation 

The MICU controls the door lock actuators based on B-CAN data.

	Input	Output
MICU		Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Door lock signal	Door lock message (LOCK) Door lock message (UNLOCK)

Door Lock (Trunk) Response Operation 

The MICU controls the trunk lid release actuator based on inputs from trunk lid opener switch and B-CAN data.

	Input	Output
MICU	Trunk lid opener switch signal	Trunk lid release actuator
B-CAN	Vehicle speed pulse signal Door lock signal

Door Lock (Fuel Fill Door) Response Operation 

The MICU controls the fuel fill door opener solenoid based on B-CAN data.

	Input	Output
MICU		Fuel fill door opener solenoid
B-CAN	Door lock signal

Trunk Lid Opener Switch 

The MICU controls the trunk lid release actuator based on inputs from each switch and B-CAN data.

	Input	Output
MICU	Trunk lid opener switch Trunk lid outer handle switch	Trunk lid release actuator
B-CAN	Vehicle speed pulse signal

Fuel Fill Door Switch 

The MICU controls the fuel fill door opener solenoid based on inputs from fuel fill door switch.

	Input	Output
MICU	Fuel fill door switch signal	Fuel fill door opener solenoid
B-CAN

Keyless Entry System (Door Lock)* 

The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch	Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK)
B-CAN	Keyless signal Keyless access key signal	Door lock message (LOCK) Door lock message (UNLOCK) Relock message (RELOCK)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Keyless Entry System (Trunk) 

The MICU controls the trunk lid release actuator based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Trunk lid opener switch	Trunk lid release actuator
B-CAN	Keyless signal Keyless access key signal

Trunk Lid Outer Handle Switch Operation 

The MICU controls the trunk lid release actuator based on inputs from the each switch and B-CAN data.

	Input	Output
MICU	Trunk lid outer handle switch Trunk lid opener switch	Trunk lid release actuator
B-CAN	Vehicle speed pulse signal

Turn Signal/Hazard Warning Lights 

The MICU controls the turn signal/hazard warning lights based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Hazard warning switch Turn signal switch (left/right) Turn L/R sensor signal	Turn signal lights (left/right)
B-CAN		MICU message (TURNLRLY) MICU message (TURNRRLY) MICU message (HAZARDSW) Combination light switch message (TURNR) Combination light switch message (TURNL)

One-Push Turn Signals 

The MICU controls the turn signal lights based on inputs from each switch.

	Input	Output
MICU	IG power supply Hazard warning switch Turn signal switch (left/right)	Turn signal lights (left/right)
B-CAN		MICU message (TURNLRLY) MICU message (TURNRRLY) MICU message (HAZARDSW) MICU message (TURN L ONETOUCH) MICU message (TURN R ONETOUCH)

Security Alarm System* 

The MICU controls the turn signal lights and the horn based on inputs from each switch and B-CAN data.

	Input	Output
MICU	Key switch signal IG1 power supply Audio switch Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch Security hood switch Transmission range switch (P position)	Turn signal lights (left/right) Horn relay
B-CAN	Keyless signal Door lock signal Keyless access key signal	MICU message (SCSET1) MICU message (SCSET2) Alarm message (SCACTION) Alarm message (SCCYCLE) Alarm message (SCPARKING) Alarm message (SCHLLO) Alarm message (SCHORN)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Keyless Answer Back* 

The MICU controls the keyless answer back operation based on B-CAN data.

	Input	Output
MICU		Horn relay Keyless buzzer
B-CAN	Keyless signal

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Security Answer Back* 

The MICU controls the security answer back operation based on B-CAN data.

	Input	Output
MICU		Turn signal lights (left/right) Horn relay Keyless buzzer
B-CAN	Keyless signal

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Answer Back Response Operation (Keyless Buzzer) 

The MICU controls the keyless buzzer based on B-CAN data.

	Input	Output
MICU		Keyless buzzer
B-CAN	Answer back signal (KEYLESS BUZZER)

Fill Assist Operation 

The MICU controls the fill assist operation based on B-CAN data.

	Input	Output
MICU		Keyless buzzer Turn signal lights (left/right)
B-CAN	Zone alarm signal

Keyless PANIC Operation 

The MICU controls the PANIC operation based on B-CAN data.

	Input	Output
MICU		Headlights (low beam) Parking lights Taillights Horn relay
B-CAN	PANIC signal (PANIC) PANIC signal (H/L LO) PANIC signal (PARKING LIGHT) PANIC signal (HORN)

Car Finding Operation 

The MICU controls the car finding operation based on B-CAN data.

	Input	Output
MICU		Headlights (low beam) Parking lights Taillights Horn relay
B-CAN	Car finding signal (Car finding) Car finding signal (H/L LO) Car finding signal (PARKING LIGHT) Car finding signal (HORN)

Combination Light Switch 

The MICU controls the lighting system based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Combination light switch (OFF) Combination light switch (PARKING) Combination light switch (AUTO) Combination light switch (ON) Combination light switch (DIMMER) Combination light switch (PASSING) Transmission range switch P position (L4 engine) TCM P position (V6 engine)
B-CAN	Parking brake switch signal Vehicle speed pulse signal	Combination light switch message (PARKING) Combination light switch message (HLLO) Combination light switch message (HLAUTO) Combination light switch message (HLHI) Combination light switch message (PASSING)

Exterior Lights 

The MICU controls the exterior lights based on inputs from IG1 switch.

	Input	Output
MICU	IG1 power supply	Parking lights Headlights (low/high beam) Side marker lights Taillights License plate lights
B-CAN		Headlight message (PARKINGRLY) Headlight message (HLLORLY) Headlight message (HLHIRLY) Headlight message (ILL SML)

Headlight Auto OFF Function* 

The MICU controls the lighting system based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Driver's door switch	Parking lights Headlights (low/high beam) Side maker lights Taillights License plate lights
B-CAN	IG1 meter signal Keyless access key signal Automatic lighting signal (ALOFFPARKING) Automatic lighting signal (ALOFFHLLO)	Headlight message (PARKINGRLY) Headlight message (HLLORLY) Headlight message (HLHIRLY) Headlight message (ILL SML)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

LED Headlight Failure Detection 

The MICU controls the LED headlight based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Headlights (low beam)
B-CAN	IG1 meter signal	Headlight message (LEDWRN) Headlight message (LEDWRN IND)

Automatic Lighting System 

The MICU controls the automatic lighting system based on inputs from IG1 switch and B-CAN data.

	Input	Output
MICU	IG1 power supply	Headlights (low/high beam) Parking lights Side maker lights Taillights License plate lights
B-CAN	IG1 meter signal Automatic lighting signal (ALPARKING) Automatic lighting signal (ALHLLO) Automatic lighting signal (ALOFFPARKING) Automatic lighting signal (ALOFFHLLO)	Headlight message (PARKINGRLY) Headlight message (HLLORLY) Headlight message (HLHIRLY) Headlight message (ILL SML)

Automatic Lighting Operation 

The MICU controls the automatic lighting system based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Key switch signal Automatic lighting signal	Headlight backup signal
B-CAN	IG1 power supply Vehicle speed pulse signal Keyless access key signal Windshield wiper switch (AUTO STOP)	Automatic lighting message (ALILLUMI) Automatic lighting message (ALPARKING) Automatic lighting message (ALHLLO) Automatic lighting message (ALOFFPARKING) Automatic lighting message (ALOFFHLLO) Automatic lighting message (ALWARN) Automatic lighting message (ALSIO) Automatic lighting message (ALSIO 10 bit)

Daytime Running Lights 

The MICU controls the daytime running lights based on inputs from IG2 switch and B-CAN data.

	Input	Output
MICU	IG2 power supply	Headlights (daytime running lights)
B-CAN	IG1 meter signal Parking brake switch signal Automatic lighting signal (ALHLLO) Automatic lighting signal (ALOFFHLLO)	Headlight message (DRLKC)

High Beam Support System 

The MICU controls the high beam support system based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Combination light switch (PASSING) Combination light switch (DIMMER)	Headlights (high beam)
B-CAN	High beam support system signal (HSSHI) Automatic lighting signal (ALHLLO)	Headlight message (HLHIRLY)

Fog Lights 

The MICU controls the fog lights based on inputs from fog light switch.

	Input	Output
MICU	Fog light switch	Fog light relay
B-CAN		Headlight message (FRFOGRLY)

Puddle light Control System 

The MICU controls the puddle lights based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply ACCESSORY (ACC) power supply TCM P position Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Trunk lid latch switch	Puddle lights
B-CAN	Keyless signal Welcome light signal

Windshield Wiper Switch 

The MICU controls the windshield wiper based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Windshield wiper switch (INT & LO) Windshield wiper switch (HI & LO) Windshield wiper switch (MIST) Windshield wiper switch intermittent dwell time controller
B-CAN		Wiper/washer switch message (FRINT) Wiper/washer switch message (FRWIPLO) Wiper/washer switch message (FRWIPHI) Wiper/washer switch message (FRMIST) Wiper/washer switch message (FRINTVR)

Windshield Wiper* 

The MICU controls the windshield wiper based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Windshield wiper switch (AUTO STOP) Brake pedal position switch Transmission range switch P position (L4 engine) TCM P position (V6 engine)	Windshield wiper relay (INT) Windshield wiper relay (HIGH/LOW)
B-CAN	IG1 meter signal Parking brake switch Vehicle speed pulse signal	Headlight message (FRWIPAS)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Automatic Wiper Operation 

The MICU controls the windshield wiper based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Windshield wiper switch (AUTO STOP)	Windshield wiper relay (INT) Windshield wiper relay (HIGH/LOW)
B-CAN	IG1 meter signal Automatic wiper signal (ASREQ) Automatic wiper signal (AHREQ) Automatic wiper signal (ALREQ) Automatic wiper signal (RSFAIL)

Washer Operation* 

The MICU controls the windshield washer motor based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Windshield washer switch	Windshield washer motor
B-CAN		Wiper auto stop message (FRWASHRLY)

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Power Window Relay 

The MICU controls the power window vehicle off operation based on inputs from IG1 switch and B-CAN data.

	Input	Output
MICU	IG1 power supply	Power window relay
B-CAN	Power window signal (PWRLY) Power window signal (TIMER) Power window signal (TIMERVALUE)

Headlight Washer Switch 

The MICU controls the headlight washer motor based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Headlight washer switch Windshield washer switch	Headlight washer motor

	Input	Output
B-CAN		MICU message (HLWASHSW)

Heated Windshield Wiper Area Operation 

The MICU controls the heated windshield wiper area based on inputs from each switch and B-CAN data.

	Input	Output
MICU	IG1 power supply Heated windshield wiper area switch	Heated windshield wiper area relay
B-CAN	A/C signal (FRDEF)	MICU message (FRDEFSW)

Rear Window Defogger Switch 

The MICU controls the rear window defogger based on inputs from each switch.

	Input	Output
MICU	IG1 power supply Rear window defogger switch	Rear window defogger
B-CAN

FOB ID Transmission Operation 

The MICU controls the FOB ID transmission based on inputs from each switch and B-CAN data.

	Input	Output
MICU	Key cylinder switch IG1 power supply
B-CAN	Keyless signal Door lock signal	FOB ID message (FOB ID)