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Multiplex Integrated Control System Description - Functional Control (2014 2015)

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   MICU message (Under 10 V)

Entry Lights Control System (Map Lights)* 

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

  Input Output
MICU IG1 power supply

Key switch signal

Driver's door switch

Front passenger's door switch

Interior light cut signal

Interior lights
B-CAN Left rear door switch

Right rear door switch

Full latch switch

Driver's door lock knob switch signal (UNLOCK)

Passenger's door lock knob switch signal (UNLOCK)

Left rear door lock knob switch signal (UNLOCK)

Right rear door lock knob switch signal (UNLOCK)

Keyless access key signal

Keyless signal

Door lock signal

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

Puddle light 

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

  Input Output
MICU IG1 power supply

Transmission range switch (P position)

Driver's door switch

Front passenger's door switch

Puddle lights
  Input Output
B-CAN Left rear door switch

Right rear door switch

Driver's door lock knob switch signal (UNLOCK)

Passenger's door lock knob switch signal (UNLOCK)

Keyless signal

Full latch switch

Keyless access key signal

Door lock signal

Answer back signal (WELCOME LT)

 

Interior Lights Auto-Off Timer (Map Lights) 

The MICU controls the interior lights OFF 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

Interior lights
B-CAN Left rear door switch

Right rear door switch

Full latch switch

Driver's door lock knob switch signal (LOCK/UNLOCK)

Driver's door key cylinder switch signal (LOCK/UNLOCK)

Front passenger's door lock knob switch signal (UNLOCK)

Left rear door lock knob switch (UNLOCK)

Right rear door lock knob switch (UNLOCK)

Keyless signal

Door lock signal

Keyless access key signal

Battery sensor signal

Answer back signal (WELCOME LIGHT)

 

Door Courtesy Light 

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

  Input Output
MICU IG1 power supply

Driver's door switch

Front passenger's door switch

Interior light cut signal

Door courtesy lights
B-CAN Left rear door switch

Right rear door switch

 

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

Door lock actuators (LOCK/UNLOCK)

Driver's door lock actuator (UNLOCK)

B-CAN Left rear door switch

Right rear door switch

Driver's door lock switch signal (LOCK/UNLOCK)

Driver's door key cylinder switch signal (LOCK/UNLOCK)

Driver's door lock knob switch signal (LOCK/UNLOCK)

Front passenger's door lock switch signal (LOCK/UNLOCK)

Full latch switch

Keyless access key signal

Door lock signal (LOCK/UNLOCK)
*: This system can be customized in the multi-information display (MID) to suit the customer 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)

Driver's door switch

Front passenger's door switch

Brake pedal position switch

Door lock actuators (LOCK)
  Input Output
B-CAN Left rear door switch

Right rear door switch

Driver's door lock knob switch signal (UNLOCK)

Front passenger's door lock knob switch signal (UNLOCK)

Left rear door lock knob switch (UNLOCK)

Right rear door lock knob switch (UNLOCK)

Vehicle speed pulse signal

Engine speed pulse signal

Full latch switch

Door lock signal (LOCK)
*: This system can be customized in the multi-information display (MID) to suit the customer 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)

ACCESSORY (ACC) power supply

Driver's door switch

Key switch signal

Remote engine starter signal

Door lock actuators (UNLOCK)

Driver's door lock actuator (UNLOCK)

B-CAN Vehicle speed pulse signal

Keyless access key signal

Driver's door lock knob switch signal (LOCK/UNLOCK)

Driver's door lock switch signal (LOCK/UNLOCK)

Driver's door key cylinder switch signal (LOCK/UNLOCK)

Front passenger's door lock knob switch signal (UNLOCK)

Front passenger's door lock switch signal (LOCK/UNLOCK)

Left rear door lock knob switch (UNLOCK)

Right rear door lock knob switch (UNLOCK)

Door lock signal (UNLOCK)
*: This system can be customized in the multi-information display (MID) to suit the customer 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)

Driver's door switch

Door lock actuators (LOCK/UNLOCK)

Driver's door lock actuator (UNLOCK)

Turn signal lights (left/right)

B-CAN Engine speed pulse signal

FOB ID data

Customized mode data

Customized data

Diagnosis data

Driver's door lock switch signal (LOCK/UNLOCK)

Door lock signal (LOCK)

Door lock signal (UNLOCK)

MICU message (TURNLRLY)

MICU message (TURNRRLY)

Prevention of Key Locked Inside Vehicle 

The MICU controls of 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

Driver's door lock knob switch signal (UNLOCK)

Door lock signal (UNLOCK)

Collision Detection Signal (CDS) 

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

  Input Output
MICU IG1 power supply Door lock actuators (UNLOCK)
B-CAN CDS signals Door lock signal (UNLOCK)

Door Lock Response Operation 

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

  Input Output
MICU   Door lock actuators (LOCK/UNLOCK)

Driver's door lock actuator (UNLOCK)

B-CAN Door lock signal Door lock signal (LOCK/UNLOCK)

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

Door lock actuators (LOCK/UNLOCK)

Driver's door lock actuator (UNLOCK)

  Input Output
B-CAN Keyless signal

Full latch switch

Left rear door switch

Right rear door switch

Driver's door lock switch signal (LOCK/UNLOCK)

Driver's door key cylinder switch signal (LOCK/UNLOCK)

Driver's door lock knob switch signal (LOCK)

Front passenger's door lock switch signal (LOCK/UNLOCK)

Keyless access key signal

Door lock signal (LOCK/UNLOCK)

Relock signal (RELOCK)

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

Turn Signal/Hazard Warning Lights 

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

  Input Output
MICU IG1 power supply

Turn signal switch (left/right)

Hazard warning switch

Turn signal lights (left/right)
B-CAN   MICU message (TURNLRLY)

MICU message (TURNRRLY)

MICU message (HAZARDSW)

Combination light switch signal (TURNR)

Combination light switch signal (TURNL)

One-Push Turn Signals 

The MICU controls the turn signal lights based on inputs from combination light 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 lighting system 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

 
B-CAN Left rear door switch

Right rear door switch

Driver's door key cylinder switch signal (LOCK/UNLOCK)

Driver's door lock knob switch signal (UNLOCK)

Front passenger's door lock knob switch signal (UNLOCK)

Rear MICU (KCTRUN)

Left rear door lock knob switch signal (UNLOCK)

Right rear door lock knob switch signal (UNLOCK)

Full latch switch

Security hood switch signal

Keyless signal

Door lock signal

Keyless access key signal

Valid code

Power tailgate control unit

MICU message (SET1)

MICU message (SET2)

ALARM message (ACTION)

ALARM message (CYCLE)

ALARM message (PARKING LIGHT)

ALARM message (H/L LOW)

ALARM message (HORN)

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

Keyless Answer Back* 

The MICU controls the lighting system and the horn based on keyless signal sent by B-CAN.

  Input Output
MICU Door lock actuator signal (LOCK/UNLOCK)  
B-CAN Keyless signal

Driver's door lock knob switch signal (UNLOCK)

Answer back signal (HORN)

Answer back signal (PARKING)

Answer back signal (BUZZER)

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

Security Answer Back* 

The MICU controls the lighting system and the horn based on keyless signal sent by B-CAN.

  Input Output
MICU Door lock actuator signal (LOCK/UNLOCK)  
B-CAN Keyless signal Answer back signal (PARKING)

Answer back signal (HORN)

Answer back signal (BUZZER)

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

Answer Back Response Operation (Hazard) 

The MICU controls the keyless buzzer based on inputs from the answer back signals.

  Input Output
MICU IG1 power supply Turn signal lights (left/right)
B-CAN Engine speed pulse signal

Answer back signal (HAZARD)

 

Combination Light Switch 

The MICU controls the lighting system based on inputs from the combination light switch.

  Input Output
MICU IG1 power supply

Combination light switch (OFF)

Combination light switch (PARKING)

Combination light switch (ON)

Combination light switch (DIMMER)

Combination light switch (PASSING)

Transmission range switch (P position)

 
B-CAN Parking brake switch signal

Vehicle speed pulse signal

Combination light switch signal (PARKING)

Combination light switch signal (HLLO)

Combination light switch signal (HLAUTO)

Combination light switch signal (HLHI)

Combination light switch signal (PASS)

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

Key switch signal

Automatic lighting signal (AUTOLT SIO)

Headlight backup signal
B-CAN IG1 meter signal

Vehicle speed pulse signal

Keyless access key signal

Windshield wiper signal (FRWIPAS)

Automatic lighting signals

Windshield Wiper Switch 

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

  Input Output
MICU IG1 power supply

Windshield wiper switch (INT and LO)

Windshield wiper switch (HI and LO)

Windshield wiper switch (MIST)

Windshield wiper switch (WASH)

Windshield washer switch intermittent dwell time controller

 
B-CAN   Windshield wiper switch signal (INT)

Windshield wiper switch signal (WIPLO)

Windshield wiper switch signal (WIPHI)

Windshield wiper switch signal (WIPMIST)

Windshield wiper switch signal (INTVR)

Windshield wiper switch signal (WASH)

Headlight Washer Switch 

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

  Input Output
MICU IG1 power supply

Headlight washer switch

 
B-CAN   MICU message (HLWASHSW)

Heated windshield wiper area 

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

  Input Output
MICU IG1 power supply

Heated windshield wiper area switch

 
B-CAN   MICU message (FRDEFSW)

Power Window Relay 

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

  Input Output
MICU IG1 power supply Power window relay
B-CAN Power window relay signal

Power window timer signal

 

Rear MICU 

Power Supply Voltage Monitoring Function 

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

  Input Output
Rear MICU Battery voltage (VBU)  

Cargo Area Light 

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

  Input Output
MICU IG1 power supply

Full latch switch

Interior light cut signal

Cargo area light
B-CAN    

Rear Window Wiper Operation 

The rear MICU controls the rear window wiper motor and washer motor based on inputs from each switch and B-CAN data.

  Input Output
Rear MICU IG1 power supply Rear window wiper motor relay
B-CAN Transmission range switch (R position)

MICU message (BACKLTSW)

Rear window wiper/washer switch (LO)

Rear window wiper/washer switch (INT)

Windshield wiper switch (HI and LO)

Windshield wiper switch (INT and LO)

Automatic lighting/rain sensor signal

Rear window wiper/washer switch (WASH)

 

Second Row Seat with One-touch Access 

The Rear MICU controls the second row seat with one-touch access signal based on inputs from each switch.

  Input Output
Rear MICU IG1 power supply

Left one-touch access switch (seat-back side)

Left one-touch access switch (seat cushion side)

Right one-touch access switch (seat-back side)

Right one-touch access switch (seat cushion side)

Left one-touch access actuator

Right one-touch access actuator

B-CAN Vehicle speed pulse signal

MICU message (STOP)

Transmission range switch (P position)

 

Keyless Buzzer 

The rear MICU controls the keyless buzzer based on inputs from the answer back signals.

  Input Output
MICU   Keyless/power tailgate outside buzzer
B-CAN Answer back signal (BUZZER)  

Relay Control Module 

Power Supply Voltage Monitoring Function 

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

  Input Output
Relay control module Battery voltage (VBU)  

Security Alarm System 

The relay control module controls the lighting system and the horn based on inputs from each switch and B-CAN data.

  Input Output
Relay control module IG1 power supply Headlight relay

Headlights (low beam)

Small light relay

Horn relay

B-CAN Security alarm signals  

Answer Back Response Operation (Parking lights, Taillights, Horns) 

The relay control module controls the lighting system and the horn based on keyless signal sent by B-CAN.

  Input Output
Relay control module   Headlight relay

Headlights (low beam)

Small light relay

Horn relay

B-CAN Answer back signal (SMALL)

Answer back signal (HLLO)

Answer back signal (HORN)

Relay control module messages

Keyless PANIC Operation 

The relay control module controls the keyless PANIC operation based on keyless signal sent by B-CAN.

  Input Output
Relay control module   Headlight relay

Headlights (low beam)

Small light relay

Horn relay

B-CAN PANIC signals  

Exterior Lights 

The relay control module controls the exterior lights based on combination light switch inputs sent by B-CAN data.

  Input Output
Relay control module IG1 power supply Headlight relay

Headlights (low/high beam)

Small light relay

B-CAN Combination light switch (PARKING/LO/HI/AUTO) Relay control module messages

Headlight Auto OFF Function* 

The relay control module controls the exterior lights shutoff based on inputs from the IG1 signal and B-CAN data.

  Input Output
Relay control module IG1 power supply Headlight relay

Headlights (low/high beam)

Small light relay

B-CAN Key switch signal

Driver's door switch

Driver's door lock knob switch signal (LOCK)

Combination light switch signals

IG1 meter signal

Keyless access key signal

Automatic lighting signals

Keyless signal

Door lock signal

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

LED Headlight Failure Detection 

The relay control module controls the LED headlight based on inputs from each inputs and B-CAN data.

  Input Output
Relay control module IG1 power supply

Headlights (low beam)

 
B-CAN IG1 meter signal Relay control module messages

Automatic Lighting System 

The relay control module controls the automatic lighting system based on inputs from IG1 input and B-CAN data.

  Input Output
Relay control module IG1 power supply Headlight relay

Headlights (low/high beam)

Small light relay

B-CAN IG1 meter signal

Automatic lighting signals

Combination light switch signals

Relay control module messages

Daytime Running Lights 

The relay control module controls the headlights daytime running light system based on inputs from IG2 switch and B-CAN data.

  Input Output
Relay control module IG2 power supply Headlights (low beam)

Daytime running lights

B-CAN Parking brake switch signal

IG1 meter signal

Automatic lighting signals

Combination light switch signal (HLAUTO)

Relay control module messages

Washer Operation 

The relay control module controls the windshield washer motor based on inputs from the IG1 switch and B-CAN data.

  Input Output
Relay control module IG1 power supply Windshield/rear window washer motor
B-CAN Windshield washer switch

Rear window washer switch

Windshield washer motor message (FRWASHRLY)

Rear Window Defogger Operation 

The relay control module controls the rear window defogger based on inputs from the IG1 switch and B-CAN data.

  Input Output
Relay control module IG1 power supply Rear window defogger relay
B-CAN Rear window defogger switch