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.
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Input |
Output |
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MICU |
Battery voltage (VBU) |
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B-CAN |
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MICU message (Under 10 V) | |
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Prevention of Key Locked Inside Vehicle
The MICU controls of the door lock actuators based on inputs from each switch and B-CAN data.
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Input |
Output |
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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) |
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B-CAN |
Keyless access signal |
Door lock signal (UNLOCK) | |
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Entry Lights Control System (Ceiling Lights, Map Lights)
The MICU controls the interior lights based on inputs from each switch and B-CAN.
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Input |
Output |
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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
Driver's door lock knob switch signal (LOCK)
Interior light cut signal |
Interior lights |
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B-CAN |
Keyless signal
Keyless access key signal |
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Cargo Area Light
The MICU controls the cargo area light based on inputs from each switch and B-CAN data.
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Input |
Output |
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MICU |
IG1 power supply
Tailgate latch switch |
Cargo area light |
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B-CAN |
Interior light cut signal |
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Interior Lights Auto-Off Timer (Ceiling Lights, Map Lights)
The MICU controls the interior lights OFF based on inputs from each switch and B-CAN data.
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Input |
Output |
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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
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 |
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B-CAN |
Keyless signal
Door lock signal
Keyless access key signal |
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Collision Detection Signal (CDS)
The MICU controls the door lock actuators based on inputs from ignition switch (IG1) and B-CAN data.
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Input |
Output |
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MICU |
IG1 power supply |
Door lock actuators (UNLOCK)
Driver's door lock actuator (UNLOCK) |
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B-CAN |
CDS signals |
Door lock signal (UNLOCK) | |
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Power Door Locks
The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.
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Input |
Output |
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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
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) |
Door lock actuators (LOCK/UNLOCK)
Driver's door lock actuator (UNLOCK) |
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B-CAN |
Keyless access key signal |
Door lock signal (LOCK/UNLOCK) | |
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Auto Power Door Locks (LOCK Operation)
The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.
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Input |
Output |
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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)
Tailgate latch switch
Brake pedal position switch |
Door lock actuators (LOCK) |
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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) | |
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Auto Power Door Locks (UNLOCK Operation)
The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.
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Input |
Output |
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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) |
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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) | |
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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.
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Input |
Output |
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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) |
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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) | |
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Door Lock Response Operation
The MICU controls the door lock actuators based on door lock signal sent by B-CAN data.
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Input |
Output |
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MICU |
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Door lock actuators (LOCK/UNLOCK)
Driver's door lock actuator (UNLOCK) |
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B-CAN |
Door lock signal |
Door lock signal (LOCK/UNLOCK) | |
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Keyless Entry System (Door Lock)
The MICU controls the door lock actuators based on inputs from each switch and B-CAN data.
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Input |
Output |
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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
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) |
Door lock actuators (LOCK/UNLOCK)
Driver's door lock actuator (UNLOCK) |
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B-CAN |
Keyless signal
Keyless access key signal |
Door lock signal (LOCK/UNLOCK)
Relock signal (RELOCK) | |
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Keyless Entry System (Tailgate)
The MICU controls the tailgate release actuator based on inputs from each switch and B-CAN data.
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Input |
Output |
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MICU |
IG1 power supply
Key switch signal |
Tailgate release actuator |
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B-CAN |
Vehicle speed pulse signal
Keyless signal
Keyless access key signal |
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Security Alarm System
The MICU controls the lighting system and the horn based on inputs from each switch and B-CAN data.
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Input |
Output |
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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
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 |
Headlights (low beam)
Parking lights
Taillights
Horn relay |
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B-CAN |
Keyless signal
Door lock signal
Keyless access key signal |
MICU message (SET1)
MICU message (SET2)
ALARM message (ACTION)
ALARM message (HORN)
ALARM message (H/L LOW)
ALARM message (PARKING LIGHT)
ALARM message (CYCLE) | |
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Security Answer Back
The MICU controls the lighting system and the horn based on keyless signal sent by B-CAN.
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Input |
Output |
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MICU |
Door lock actuator signal (LOCK/UNLOCK) |
Parking lights
Taillights
Horn relay
Keyless buzzer |
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B-CAN |
Security alarm signal
Door lock actuator signal (LOCK/UNLOCK) |
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Answer Back Response Operation (Parking lights, Taillights, Horns)
The MICU controls the lighting system and the horn based on keyless signal sent by B-CAN.
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Input |
Output |
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MICU |
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Parking lights
Taillights
Horn relay |
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B-CAN |
Vehicle speed pulse signal
Answer back signal (HAZARD) |
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Answer Back Response Operation (Keyless Buzzer)
The MICU controls the keyless buzzer based on inputs from the answer back signals.
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Input |
Output |
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MICU |
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Keyless buzzer |
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B-CAN |
Answer back signal (BUZZER) |
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Combination Light Switch
The MICU controls the lighting system based on inputs from the combination light switch.
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Input |
Output |
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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) |
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B-CAN |
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Combination light switch signal (PARKING)
Combination light switch signal (HLLO)
Combination light switch signal (HLHI)
Combination light switch (HLAUTO)
Combination light switch signal (PASS) | |
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Exterior Lights
The MICU controls the exterior lights based on combination light switch inputs sent by B-CAN data.
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Input |
Output |
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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
Side marker lights
Taillights
License plate lights |
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B-CAN |
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Relay module message (SAMLLRLY )
Relay module message (HLLORLY )
Relay module message (HLHIRLY)
Relay module message (ILL SML) | |
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Fog Lights
The MICU controls the fog lights based on inputs from combination light switch.
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Input |
Output |
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MICU |
Fog light switch
Combination light switch signal (HLLO)
Combination light switch signal (SMALL)
Combination light switch signal (HLAUTO) |
Fog light relay |
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B-CAN |
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Relay module message (FRFOGRLY) | |
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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.
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Input |
Output |
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MICU |
IG1 power supply
Turn signal switch (left/right)
Hazard warning switch |
Turn signal lights (left/right) |
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B-CAN |
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MICU message (TURNLRLY)
MICU message (TURNRRLY)
MICU message (HAZARDSW)
Combination light switch signal (TURNRSW)
Combination light switch signal (TURNLSW) | |
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One-Push Turn Signals
The MICU controls the turn signal lights based on inputs from combination light switch.
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Input |
Output |
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MICU |
IG power supply
Turn signal switch (left/right)
Hazard warning switch |
Turn signal lights (left/right) |
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B-CAN |
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MICU message (TURNLRLY)
MICU message (TURNRRLY)
MICU message (HAZARDSW)
MICU message (TURN L ONETOUCH)
MICU message (TURN R ONETOUCH) | |
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Windshield Wiper Switch
The MICU controls the wiper system based on inputs from each switch.
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Input |
Output |
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MICU |
IG1 power supply
Windshield wiper switch (INT & LO)
Windshield wiper switch (HI & LO)
Windshield wiper switch (MIST) |
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B-CAN |
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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) | |
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Windshield Wiper
The MICU controls the windshield wiper based on inputs from each switch and B-CAN data.
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Input |
Output |
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MICU |
IG1 power supply
Windshield wiper switch signal (INT)
Windshield wiper switch signal (WIPHI)
Windshield wiper switch signal (WIPLO)
Windshield wiper switch signal (MIST)
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) |
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B-CAN |
IG1 meter signal
Parking brake switch
Vehicle speed pulse signal |
Relay module message (FRWIPAS) | |
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Washer Operation
The MICU controls the windshield washer motor based on inputs from each switch.
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Input |
Output |
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MICU |
IG1 power supply
Windshield washer switch
Rear window washer switch |
Windshield/rear window washer motor |
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B-CAN |
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Windshield washer motor message (FRWASHRLY)
Rear window washer motor message (RRWASHRLY) | |
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Power Window Relay
The MICU controls the power window vehicle-OFF operation based on inputs from ignition switch and B-CAN data.
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Input |
Output |
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MICU |
IG1 power supply |
Power window relay |
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B-CAN |
Power window signal (PWRLY)
Power window signal (TIMER)
Power window signal (TIMERVALUE) |
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Key Interlock
The MICU controls the key interlock solenoid based on inputs from each switch.
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Input |
Output |
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MICU |
ACCESSORY power supply
Transmission range switch (in P)
Park pin switch |
Key interlock solenoid |
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B-CAN |
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A/C Switch
The MICU controls the A/C switch signal based on inputs from each switch.
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Input |
Output |
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MICU |
IG1 power supply
A/C switch |
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B-CAN |
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Relay module message (ACPRESW) | |
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Rear Window Defogger Operation
The MICU controls the rear window defogger signal based on inputs from each switch.
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Input |
Output |
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MICU |
IG1 power supply
Rear window defogger switch |
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B-CAN |
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MICU message (RRDEFSW) | |
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