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 Left rear door switch Right rear door switch Trunk lid latch switch Interior light cut signal |
Interior lights |
| B-CAN | Driver's door lock knob switch signal (LOCK) Keyless signal Keyless access key signal |
| *: This system can be customized in the multi-information display (MID) to suit the client 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 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 Left rear door switch Right rear door switch Trunk lid latch switch Left rear door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK) |
Interior lights |
| Input | Output | |
|---|---|---|
| B-CAN | 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) Keyless signal Door lock signal Keyless access key signal |
Footwell Light
The MICU controls the footwell 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 Left rear door switch Right rear door switch |
Footwell lights |
| B-CAN | Driver's door lock knob switch signal (LOCK) Keyless signal Keyless access key signal Parking light signal |
Trunk Light
The MICU controls the trunk light based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Trunk lid latch switch Interior light cut signal |
Trunk light |
| B-CAN |
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 Left rear door switch Right rear door switch Interior light cut signal |
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 | 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) Keyless access key signal |
Door lock signal (LOCK/UNLOCK) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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 Left rear door switch Right rear door switch Left rear door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK) Trunk lid latch switch Brake pedal position switch |
Door lock actuators (LOCK) |
| B-CAN | Driver's door lock knob switch signal (UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Vehicle speed pulse signal Engine speed pulse signal |
Door lock signal (LOCK) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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 Left rear door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK) |
Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK) |
| B-CAN | Vehicle speed pulse signal Driver's door lock knob switch signal (UNLOCK) Driver's door lock switch signal (LOCK/UNLOCK) Driver's door key cylinder switch signal (UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Front passenger's door lock switch signal (LOCK/UNLOCK) |
Door lock signal (UNLOCK) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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) Driver's door lock actuator (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) |
Door Lock (Trunk) Response Operation
The MICU controls the trunk lid release actuator based on B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | Trunk lid release actuator | |
| B-CAN | Trunk lid opener switch signal Vehicle speed pulse signal Door lock signal |
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) |
| Input | Output | |
|---|---|---|
| B-CAN | Keyless signal Keyless access key signal 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) |
Door lock signal (LOCK/UNLOCK) Relock signal (RELOCK) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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 release actuator |
| B-CAN | Vehicle speed pulse signal Trunk lid opener switch signal Keyless signal Keyless access key signal |
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 (TURNRSW) Combination light switch signal (TURNLSW) |
One-Push Turn Signals
The MICU controls the turn signal lights based on inputs from combination light switch.
| Input | Output | |
|---|---|---|
| MICU | IG power supply Turn signal switch (left/right) Hazard warning switch |
Turn signal lights (left/right) |
| Input | Output | |
|---|---|---|
| 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 | IG1 power supply Key switch signal Audio switch Driver's door switch Front passenger's door switch Left rear door switch Right rear door switch Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) Trunk lid latch switch |
|
| B-CAN | Security hood switch signal Keyless signal Door lock signal Keyless access key signal 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) |
MICU message (SET1) MICU message (SET2) ALARM message (ACTION) ALARM message (HORN) ALARM message (H/L LOW) ALARM message (PARKING LIGHT) ALARM message (CYCLE) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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) | Keyless buzzer |
| B-CAN | Keyless signal Driver's door lock knob switch signal (UNLOCK) |
Answer back signal (HORN) Answer back signal (PARKING) |
| *: 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) | Keyless buzzer |
| B-CAN | Keyless signal | Answer back signal (PARKING) Answer back signal (HORN) |
| *: This system can be customized in the multi-information display (MID) to suit the client 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 inputs from the answer back signals.
| Input | Output | |
|---|---|---|
| MICU | Keyless buzzer | |
| B-CAN | Answer back signal (BUZZER) |
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) Combination light switch signal (HLAUTO) Windshield washer switch intermittent dwell time controller Windshield wiper switch (INT and LO) Windshield wiper switch (HI and LO) Windshield wiper switch (MIST) |
Headlight backup signal |
| B-CAN | IG1 meter signal Vehicle speed pulse signal Keyless access key signal Windshield wiper signal (FRWIPAS) Windshield wiper signal (FRWIPHP) |
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 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) |
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) |
Rear Window Defogger Switch
The MICU controls the rear window defogger signal based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Rear window defogger switch |
| Input | Output | |
|---|---|---|
| B-CAN | MICU message (RRDEFSW) |
Exterior Lights
The MICU controls the exterior lights based on combination light switch inputs sent by B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Combination light switch signal (PARKING) Combination light switch signal (HLLO) Combination light switch signal (HLAUTO) Combination light switch signal (HLHI) |
Headlights (low/high beam) Parking lights Side marker lights Taillights License plate lights |
| B-CAN | Relay module message (PARKINGRLY) Relay module message (HLLORLY) Relay module message (HLHIRLY) Relay module message (ILL SML) |
Glove Box Opener Operation
The MICU controls the keyless buzzer based on inputs from the answer back signals.
| Input | Output | |
|---|---|---|
| MICU | Glove box opener switch | Glove box opener solenoid relay |
| B-CAN | Door lock signal |
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) Taillight 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) Taillight relay Horn relay |
|
| B-CAN | Answer back signals |
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) Taillight 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) Taillight 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) Taillight 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 |
Relay control module messages |
| *: This system can be customized in the multi-information display (MID) to suit the client 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) Taillight 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 | IG1 meter signal Parking brake switch 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 washer motor |
| B-CAN | Windshield 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 |
A/C Pressure Sensor
The relay control module controls the A/C pressure switch signal based on inputs from each switch.
| Input | Output | |
|---|---|---|
| Relay control module | IG1 power supply A/C pressure sensor |
|
| B-CAN | Relay control module message (ACPRESW) |