Multiplex Integrated Control System: Overview — Acura TL IV facelift (2011-2014)

Multiplex Integrated Control System: Overview Acura TL IV facelift

Scheme 1

Scheme 1: Component Location Index

Scheme 2

Scheme 3

Scheme 4

Rear Window Defogger Timer Operation

The driver's MICU controls the rear window defogger timer based on ignition switch and rear window defogger switch inputs.

	Input	Output
Driver's MICU	IG1 power supply	Rear window defogger relay
B-CAN	Rear window defogger switch

Answer Back Response Operation

The driver's MICU controls the lighting system and horns based on keyless signals sent by B-CAN.

	Input	Output
Driver's MICU		Parking light Taillights Horns
B-CAN	ANSWER BACK signal (HORN) ANSWER BACK signal (PARKING LIGHT) ANSWER BACK signal (H/L LO)	Taillight relay Horn relay

Door Lock Response Operation

The driver's MICU controls the door lock actuators LOCK, UNLOCK, DRIVER'S UNLOCK, TRUNK UNLOCK based on B-CAN door lock switch signals.

	Input	Output
Driver's MICU		Driver's door lock actuator (UNLOCK) Door lock actuators (LOCK) Door lock actuators (UNLOCK) Trunk lid release actuator
B-CAN	Door lock switch signals

Keyless PANIC Operation

The driver's MICU controls the keyless PANIC operation based on keyless signals sent by B-CAN data.

	Input	Output
Driver's MICU		Headlight (low beam) Parking light Taillights Horns
B-CAN	PANIC signals	Headlight (low beam) signal Parking light signal Taillights signal

Auto Power Door Locks (LOCK Operation)*

The driver's MICU controls the door lock actuators based on inputs from each switch.

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

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

Auto Power Door Locks (UNLOCK Operation)*

The driver's MICU controls the door lock actuators based on inputs from each switch.

	Input	Output
Driver's MICU	IG1 power supply Transmission range switch (P position) Driver's door switch Left rear door switch Trunk lid latch switch Brake pedal position switch Left rear door lock knob switch (UNLOCK)	Driver's door lock actuators (UNLOCK) Door lock actuators (UNLOCK)
B-CAN	Front passenger's door switch Right rear door switch Driver's door lock knob switch (UNLOCK) Front passenger's door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK)	Door lock signal (UNLOCK) Door lock signal (LOCK)

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

Washer Operation

The passenger's MICU controls the washer motor based on inputs from the wiper switch.

	Input	Output
Passenger's MICU	IG1 power supply Headlight washer switch (with headlight washer)	Windshield washer motor Headlight washer motor (with headlight washer)
B-CAN	Wiper switch signals

Keyless Buzzer Operation

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

	Input	Output
Passenger's MICU		Keyless buzzer
B-CAN	Answer back signals