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 | 12 Volt Battery voltage (VBU) | |
| B-CAN | MICU message (Under 10 V) |
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 Driver's door lock knob switch signal (UNLOCK) |
Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK) |
| B-CAN | Keyless access key signal | Door lock signal (UNLOCK) |
Entry Lights Control System (Ceiling Lights, Map Lights, Cargo Area Light, Ignition Key Light)*
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 Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) Driver's door lock knob switch signal (LOCK) Interior light cut off signal |
Interior lights Ignition key light |
| B-CAN | Keyless signal Keyless access key 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. |
Cargo Area Light
The MICU controls the cargo area light based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) Interior lights auto off signal |
Cargo area light |
| B-CAN |
Interior Lights Auto-Off Timer (Ceiling Lights, Map Lights, Ignition Key Light, Cargo Area 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 Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) Driver's door key cylinder switch signal (LOCK/UNLOCK) Driver's door lock knob switch signal (LOCK/UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) |
Interior lights |
| B-CAN | Keyless signal Door lock signal Keyless access key signal Battery condition 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. |
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) |
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 Tailgate latch switch (Without power tailgate) Full latch switch (With power tailgate) 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) |
Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK) |
| B-CAN | 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. |
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 (Tailgate) Response Operation
The MICU controls the tailgate release actuator based on B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | Tailgate release actuator | |
| B-CAN | Vehicle speed pulse signal Door lock signal |
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 Brake pedal position switch Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) Driver's door lock knob switch signal (UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) |
Door lock actuators (LOCK) |
| B-CAN | 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 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 Driver's door lock knob switch signal (UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) |
Door lock actuators (UNLOCK) Driver's door lock actuator (UNLOCK) |
| B-CAN | Vehicle speed pulse signal | 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 Driver's door lock switch signal (LOCK/UNLOCK) |
Door lock actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK) Turn signal light (left/right) |
| B-CAN | Engine speed pulse signal FOB ID data Customized mode data Customized data Diagnosis data |
Door lock signal (LOCK/UNLOCK) MICU message (TURNLRLY) MICU message (TURNRRLY) |
Keyless Entry System (Door Lock)* 1
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 Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) 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 actuators (LOCK/UNLOCK) Driver's door lock actuator (UNLOCK) |
| B-CAN | Keyless signal Keyless access key signal FOB ID 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. |
Keyless Entry System (Tailgate)
The MICU controls the tailgate release actuator based on inputs from each switch and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Key switch signal |
Tailgate release actuator |
| Input | Output | |
|---|---|---|
| B-CAN | Vehicle speed pulse signal Keyless signal Keyless access key signal |
Tailgate Outer Handle Switch Operation
The MICU controls the tailgate release actuator based on inputs from the tailgate outer handle switch and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | Tailgate outer handle switch Driver's door lock knob switch signal (LOCK/UNLOCK) Front passenger's door lock knob switch signal (UNLOCK) Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) |
Tailgate release actuator |
| B-CAN | Vehicle speed pulse signal |
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 Tailgate latch switch (without power tailgate) Full latch switch (with power tailgate) 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) Left rear door lock knob switch signal (UNLOCK) Right rear door lock knob switch signal (UNLOCK) Security hood switch Transmission range switch (P position) |
Headlight (low beam) Parking light/daytime running lights Taillights License plate lights Horn relay |
| Input | Output | |
|---|---|---|
| B-CAN | Keyless signal Door lock signal Keyless access key signal Keyless power tailgate OPEN signal |
MICU message (SCSET1) MICU message (SCSET2) ALARM message (SCACTION) ALARM message (SCCYCLE) ALARM message (SCHLLO) ALARM message (SCSMALL) |
| *: 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 inputs from each switch and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | Driver's door lock knob switch signal (LOCK) Door lock actuator signal (LOCK/UNLOCK) |
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 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 | Security SET signal Door lock actuator signal (LOCK/UNLOCK) |
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 customer needs. For more information about customizing options, refer to the Owner's Manual. |
Answer Back Response Operation (Turn Signal Light)
The MICU controls the lighting system based on keyless signal sent by B-CAN.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply | Turn signal lights (left/right) |
| B-CAN | Answer back signal (HAZARD) Vehicle speed pulse signal |
Answer Back Response Operation (Keyless Buzzer)
The MICU controls the keyless buzzer based on keyless signal sent by B-CAN.
| Input | Output | |
|---|---|---|
| MICU | Keyless buzzer | |
| B-CAN | Answer back signal (ABBUZZER) |
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 (SMALL) Combination light switch (ON) Combination light switch (DIMMER) Combination light switch (PASSING) |
|
| B-CAN | Combination light switch signal (SMALL) Combination light switch signal (HLLO) Combination light switch signal (HLAUTO) Combination light switch signal (HLHI) Combination light switch signal (PASSING) |
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 (SMALL) Combination light switch signal (HLLO) Combination light switch signal (HLAUTO) Combination light switch signal (HLHI) |
Headlights (low/high beam) Parking lights Taillights License plate lights |
| B-CAN | Vehicle speed pulse signal Parking brake switch signal |
SMALLRLY message HLLORLY message HLHIRLY message ILL SML message ILL SML B message |
Automatic Lighting System
The MICU controls the automatic lighting system based on inputs from ignition switch (IG1) and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Combination light switch signal (HLHI) Combination light switch signal (HLAUTO) |
Headlights (low/high beam) Parking lights Taillights License plate lights |
| B-CAN | IG1 meter signal Automatic lighting signal (ALSMALL) Automatic lighting signal (ALHLLO) Automatic lighting signal (ALOFFSMALL) Automatic lighting signal (ALOFFHLLO) |
SMALLRLY message HLLORLY message HLHIRLY message ILL SML message ILL SML B message |
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 Driver's door lock knob switch signal (LOCK) Combination light switch signal (HLAUTO) Combination light switch signal (HLHI) |
Headlights (low/high beam) Parking lights Taillights License plate lights |
| B-CAN | IG1 meter signal Keyless access key signal Automatic lighting signal (ALOFFSMALL) Automatic lighting signal (ALOFFHLLO) |
SMALLRLY message HLLORLY message HLHIRLY message ILL SML message ILL SML B message |
| *: 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. |
Daytime Running Lights
The MICU controls the headlights daytime running light system based on inputs from each switch and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | IG2 power supply Combination light switch signal (HLAUTO) Combination light switch signal (HLLO) Combination light switch signal (PASS) |
Daytime running light relay |
| B-CAN | IG1 meter signal Parking brake switch signal Automatic lighting signal (ALSMALL) Automatic lighting signal (ALHLLO) Automatic lighting signal (ALOFFSMALL) Automatic lighting signal (ALOFFHLLO) |
EUDRL message |
Fog Lights
The MICU controls the fog lights based on inputs from combination light switch.
| Input | Output | |
|---|---|---|
| MICU | Fog light switch Combination light switch signal (HLLO) Combination light switch signal (SMALL) Combination light switch signal (HLAUTO) |
Fog light relay |
| B-CAN | FRFOGRLY message |
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 L/R sensor signal |
Turn signal lights (left/right) |
| B-CAN | TURNLRLY message TURNRRLY message HAZARDSW message TURNR message TURNL message |
One-Push Turn Signals
The MICU controls the turn signal lights based on inputs from combination light switch.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Turn signal switch (left/right) Hazard warning switch |
Turn signal lights (left/right) |
| B-CAN | TURNLRLY message TURNRRLY message HAZARDSW message TURN L ONETOUCH message TURN R ONETOUCH message |
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 & LO) Windshield wiper switch (HI & LO) Windshield wiper switch (MIST) Windshield washer switch intermittent dwell time controller |
|
| B-CAN | Windshield wiper switch signal (FRINT) Windshield wiper switch signal (FRWIPLO) Windshield wiper switch signal (FRWIPHI) Windshield wiper switch signal (FRMIST) Windshield wiper switch signal (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 signal (FRINT) Windshield wiper switch signal (FRWIPHI) Windshield wiper switch signal (FRWIPLO) Windshield wiper switch signal (FRMIST) Windshield wiper switch signal (FRINTVR) Windshield wiper switch (AUTO STOP) Windshield washer switch signal Transmission range switch (P position) Brake pedal position switch |
Windshield wiper relay (INT) Windshield wiper relay (HIGH/LOW) |
| B-CAN | IG1 meter signal Parking brake switch Vehicle speed pulse signal |
FRWIPAS message |
| *: 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. |
Automatic 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 signal (FRINT) Windshield wiper switch (AUTO STOP) |
Windshield wiper relay (INT) Windshield wiper relay (HIGH/LOW) |
| B-CAN | IG1 meter signal Automatic wiper (ASREQ) signal Automatic wiper (AHREQ) signal Automatic wiper (ALREQ) signal Automatic wiper (RSFAIL) 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. |
Rear Window Wiper Switch
The MICU controls the rear window wiper based on inputs from rear window wiper switch.
| Input | Output | |
|---|---|---|
| MICU | Rear window wiper switch (INT) Rear window wiper switch (LO) |
|
| B-CAN | Rear window wiper messages (RRWIPINT) Rear window wiper messages (RRWIPLO) |
Rear Window Wiper Operation*
The MICU controls the rear window wiper based on inputs from each switch and B-CAN data.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Windshield wiper switch signal (FRINT) Windshield wiper switch signal (FRWIPHI) Windshield wiper switch signal (FRWIPLO) Rear window wiper switch (AUTO STOP) Rear window wiper switch signal (RRWIPINT) Rear window wiper switch signal (RRWIPLO) Rear window washer switch Transmission range switch (R position) (A/T) Back up light switch |
Rear window wiper relay |
| B-CAN | Automatic wiper (RAIN) signal Automatic wiper (AHREQ) signal Automatic wiper (ALREQ) signal Automatic wiper (RSFAIL) 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. |
Washer Operation*
The MICU controls the windshield washer motor and the rear window washer motor based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Windshield washer switch Rear window washer switch |
Windshield washer motor Rear window washer motor |
| B-CAN | Windshield washer motor message (FRWASHRLY) Rear window washer motor message (RRWASHRLY) |
| *: 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. |
Power Window Relay
The MICU controls the power window key-off operation based on inputs from each 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) |
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) |
Key Interlock
The MICU controls the key interlock solenoid based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | ACCESSORY (ACC) power supply Transmission range switch (P position) Park pin switch |
Key interlock solenoid |
| B-CAN |
A/C Pressure Sensor
The MICU controls the A/C pressure switch signal based on inputs from each switch.
| Input | Output | |
|---|---|---|
| MICU | A/C pressure sensor IG1 power supply |
|
| B-CAN | Relay module message (ACPRESW) |
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) |