Multiplex Integrated Control System Description

Body controller Area Network (B-CAN) and Fast Controller Area Network (FCAN):

Fast controller Area Network (F-CAN) and Body Controller Area Network (B-CAN) share information between multiple Electronic Control Units (ECUs). B-CAN communication moves at a slower speed for convenience related items, and for other functions. F-Can information moves at a faster speed for ‘‘real time'' functions such as fuel and emissions data. To allow both systems to share information, the Gauge Control Module translates information from B-CAN to F-CAN and from F-CAN to B-CAN.

The ECUs on the B-CAN and F-CAN transmit and receive information in the form of structured messages that may be received by several different ECUs on the network at one time. These message are transmitted and received across a communication circuit that consists of a single wire that is shared by all the ECUs on the curcuit. Since messages on the F-CAN network are typically of higher importance, a second wire is used for communication circuit integrity monitoring. A backup circuit is aiso added to the headlight and wiper circuits on the B-CAN network in the event of a network wire or ECU failure that would effect the operation of the system.

Messages are transmitted by an ECU (that monitors an input) over the communication circuit. ECUs that use the message (information related to that input) are the receivers. For example, the Combination Switch Control Unit monitors the wiper switch. When the wiper switch is placed in the low speed position, the Combination Switch Control Unit transmits that message on the communication circuit. The Relay Module receives the message and tums on the wipers by providing a ground for the relay.

‘‘Connected'' ECUs

Several ECUs are connected to each of the two networks. The Gauge Control Module is part of both networks since it is the ‘‘Gateway'' between them. Below is a list of possible connected ECUs and the network it is connected to.

B-CAN ECUs	F-CAN ECUs
Gauge Control Module	Gauge Control Module
Relay Control Module	ECM/PCM
Multiplex Intergrated Cotrol Unit (MICU)	Navigation Control Unit
Door Multiplex Control Unit	VSA (Vehicle Stability Assist System)
Combination Switch Control Unit
Climate Control Unit
Rain Sensor (With Auto Wiper)
Optional Security
Optional Unit (B-CAN option)

Diagnostic Trouble Codes

There are three DTC types used by the CAN networks.

Internal error DTCs	The ECUs run internal checks. If one finds that there is an internal ECU problem, it will set an internal error DTC. This indicates that the ECU needs to be replaced.
Loss of communication DTCs	Loss of communication DTCs (and Bus-off DTCs) are set when there is a problem with the communication between ECUs. This could be in the connections, the wiring, or the ECU (as called out in the DTC Troubleshooting index).
Signal error DTCs	The ECUs can run diagnostics on some input circuits to determine if that circuits is functioning properly(no opens or shorts). If a circuit falls the diagnostic test, a DTC will set (NOTE: Not all input circuits are tested for errors).

Network ‘‘Loss of Communication'' Error Checking

The B-CAN and F-CAN systems use messages to check the integrity of the network communication circuit by sending a specific message out after a specific event, such as when the ignition switch is turned to ON. After the event occurs all the ECUs on the communication circuit expect to receive a message from a specific unit within a specified amount of time. If the message is not received, the ECU will transmit a DTC reporting that it did not receive the message.

Example of communication circuit test

Normal circuit:

1.	Ignition switch is turned ON.

2.	The Door Multiplex Control Unit transmits a door switch message.

3.	The MICU, Relay Module and Gauge Control Module receive the door lock switch signal.

4.	Communication circuit test is passed.

Since the door lock switch message was received by all the ECUs expecting to receive a message, the communication circuit between those units is judged as OK. There are multiple messages sent and received by each ECU during this time to insure that the entire circuit is intact.

Failed circuit:

5.	Ignition switch is turned ON.

6.	The Door Multiplex Control Unit transmits a door switch message.

7.	The MICU, Relay Module and Gauge control module expect to receive the door lock switch signal, but since there is a break in the communication circuits, it is not received.

8.	Each ECU that expects to receive the door lock switch signal from the Door Multiplex Control Unit will transmit DTC data for the message that it did not receive.

Since there is a break in the communication circuit, the door lock switch message could not be received by the gauge control module, MICU or the relay control module. Each of these units will set ‘‘loss of communication'' error codes for the signal(s) they did not receive. There may be multiple communication DTCs if the unit that has become disconnected from the network would normally transmit multiple messages during the communication line test. (Door Multiplex sends Keyless Panic message and Door Lock Switch Message during the communication circuit test).

Loss of Communication DTC cross-reference chart

Transmitting Unit	Message	Receiving Unit/loss of Communication DTC
Transmitting Unit	Message	MICU	Relay Control Module	Door Multiplex Control unit	Gauge Control Module	Combination Switch Control Unit	Climate Control Unit	Optional Unit	Optional Security
MICU	Alarm		B1056
	MICU		B1055	RX	B1157	B1255		B1506	B1455
	Door Switch		B1057	RX	B1159			B1507	B1456
Relay Control Module	Relay Control Module	B1005			B1158
Door Multiplex Control unit	Door Lock Switch	B1006	B1058		B1160
Gauge Control Module	VSP/NE		B1060				B1205	B1508
	A/T	B1008	B1061
	ENGTEMP						B1206
	ILLUMI						B1207
Combination Switch Control Unit	Headlight Switch	B1007	B1062		B1155		B1509
Combination Switch Control Unit	Wiper Switch	B1009	B1063		B1156

RX: Receiving unit does not set a loss of communication DTC.

Troubleshooting the CAN circuit related problems

Using the PGM Tester or the HDS (Preferred method)

1.	Go to B-CAN system diagnosis test mode A.

2.	If no DTCs are retrieved, go to Test Mode C or D.

Without the PGM Tester or the HDS
(Should be used if PGM Tester or the HDS is unavailable)

3.	Check for communication circuit problems using Mode 1.

4.	Check for DTCs while in Mode A.

Sort, and then troubleshoot the DTCs in the order below. Refer to the DTC troubleshooting Index for DTC descriptions.

1st.	Internal Error DTCs
2nd.	Loss of communication DTCs
3rd.	Signal Error DTCs

If no DTCs are retrieved, use mode 2 to check all inputs related to failure.

PGM Tester/HDS
Inputs and Commands

**Input:**
System Menu	Description	Data List Indication
Wiper	Brake pedal position switch	STOP SW	Brake pedal pushed: ON
	Brake pedal position switch	STOP SW	Brake pedal released: OFF
	Windsheild wiper park position	FR WIPER AS	Wipers in park position: ON
	Windsheild wiper park position	FR WIPER AS	Wipers in other position: OFF
	Windshield wiper switch back up (failsafe)	BRAKE FLUID SW	Wiper switch in HI position: ON
	Windshield wiper switch back up (failsafe)	BRAKE FLUID SW	Wiper switch in other position: OFF
	Windshield wiper switch intermittent position	FR WIPER INT	Wiper switch in INT position: ON
	Windshield wiper switch intermittent position	FR WIPER INT	Wiper switch in other position: OFF
	Windshield wiper low speed switch	FR WIPER LO	Wiper switch in LOW position: ON
	Windshield wiper low speed switch	FR WIPER LO	Wiper switch in other position: OFF
	Windshield wiper high speed switch	FR WIPER HI	Wiper switch in HI position: ON
	Windshield wiper high speed switch	FR WIPER HI	Wiper switch in other position: OFF
	Windshield wiper mist switch	FRONT WIPER MIST	Wiper switch in MIST position: ON
	Windshield wiper mist switch	FRONT WIPER MIST	Wiper switch in other position: OFF
	Windshield wiper switch	FRONT WASHER SW	Washer switch on: ON
	Windshield wiper switch	FRONT WASHER SW	Washer switch off: OFF
	Windshield wiper motor high speed command	FR WIPER (HIGH)	Wiper high speed command on: ON
	Windshield wiper motor high speed command	FR WIPER (HIGH)	Wiper high speed command off: OFF
	Windshield wiper motor low speed command	FR WIPER (LOW)	Wiper low speed command on: ON
	Windshield wiper motor low speed command	FR WIPER (LOW)	Wiper high low command off: OFF
	Windshield washer motor command	FR WIPER WASHER	Washer command on: ON
	Windshield washer motor command	FR WIPER WASHER	Washer command off: OFF
	Intermittent wiper dwell timer	INTERVAL VOLUME	Switch at short setting: 0.0
	Intermittent wiper dwell timer	INTERVAL VOLUME	Switch at long setting: 25
Power window	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door closed: OFF
	Passenger's door switch	PASSENGER DOOR	Door open: ON
	Passenger's door switch	PASSENGER DOOR	Door closed: OFF
	Power window main switch	P/W MAIN SW	On: ON
	Power window main switch	P/W MAIN SW	Off: OFF
	Power window master, driver's AUTO switch	P/W M AUTO SW	Auto position: ON
	Power window master, driver's AUTO switch	P/W M AUTO SW	Neutral position: OFF
	Power window master, driver's UP switch	P/W M DRV UP SW	Up position: ON
	Power window master, driver's UP switch	P/W M DRV UP SW	Neutral position: OFF
	Power window master, driver's DOWN switch	P/W M DRV DOWN SW	Down position: ON
	Power window master, driver's DOWN switch	P/W M DRV DOWN SW	Neutral position: OFF
	Power window master, passenger's UP switch	P/W M AS UP SW	Up position: ON
	Power window master, passenger's UP switch	P/W M AS UP SW	Neutral position: OFF
	Power window master, passenger's DOWN switch	P/W M AS DWN SW	Down position: ON
	Power window master, passenger's DOWN switch	P/W M AS DWN SW	Neutral position: OFF
	Power window master, left rear UP switch	P/W M LR UP SW	UP position: ON
	Power window master, left rear UP switch	P/W M LR UP SW	Neutral position: OFF
	Power window master, left rear DOWN switch	P/W M LR DWN SW	Down position: ON
	Power window master, left rear DOWN switch	P/W M LR DWN SW	Neutral position: OFF
	Power window master, right rear UP switch	P/W M RR DWN SW	UP position: ON
	Power window master, right rear UP switch	P/W M RR DWN SW	Neutral position: OFF
	Power window master, right rear DOWN switch	P/W M RR DWN SW	Down position: ON
	Power window master, right rear DOWN switch	P/W M RR DWN SW	Neutral position: OFF
	Driver's power window motor A-phase pulse	DR MOT A PULSE	Window in motion: EXIST
	Driver's power window motor A-phase pulse	DR MOT A PULSE	Window stopped: N/A
	Driver's power window motor B-phase pulse signal	DR MOT B PULSE	Window in motion: EXIST
	Driver's power window motor B-phase pulse signal	DR MOT B PULSE	Window stopped: N/A
	Driver's power window motor command	DRV PW M	OFF/UP/DOWN
	Passenger's power window motor command	PASS PW M	OFF/UP/DOWN
	Left rear power window motor command	LEFT R P/W M	OFF/UP/DOWN
	Right rear power window motor command	RIGHT R P/W M	OFF/UP/DOWN
	Power window relay command	P/W RELAY	On command: ON
	Power window relay command	P/W RELAY	Off command: OFF

**Input:**
System Menu	Description	Data List Indication
Lighting	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door closed: OFF
	Ignition switch (IG1)	IGNITION KEY	Ignition ON (II): ON
	Ignition switch (IG1)	IGNITION KEY	Other positions: OFF
	Horn command	HORN	Horn on command: ON
	Horn command	HORN	Horn off command: OFF
	Head light OFF switch	HEAD LIGHT OFF SW	In off position: ON
	Head light OFF switch	HEAD LIGHT OFF SW	In other positions: OFF
	Headlight switch parking light position switch	SMALL SW	In park light position: ON
	Headlight switch parking light position switch	SMALL SW	In other positions: OFF
	Headlight switch ON position	HEAD LIGHT ON SW	In headlight position: ON
	Headlight switch ON position	HEAD LIGHT ON SW	In other position: OFF
	Headlight switch backup (failsafe)	HEAD LIGHT BACKUP	In headlight position: ON
	Headlight switch backup (failsafe)	HEAD LIGHT BACKUP	In headlight position: OFF
	Headlight switch dimmer position	HEAD LIGHT DIMMER	In hi-beam position: ON
	Headlight switch dimmer position	HEAD LIGHT DIMMER	In low-beam position: OFF
	Headlight switch passing position	PASSING SW	Passing switch on: ON
	Headlight switch passing position	PASSING SW	Passing switch off: OFF
	Left turn signal switch	TURN LEFT SW	In left position: ON
	Left turn signal switch	TURN LEFT SW	Neutral position: OFF
	Right turn signal switch	TURN RIGHT SW	In right position: ON
	Right turn signal switch	TURN RIGHT SW	Neutral position: OFF
	Ignition key cylinder light command	IG KEY LIGHT	Light on command: ON
	Ignition key cylinder light command	IG KEY LIGHT	Light off command: OFF
	Interior light command	INTERIOR LIGHT	Light on command: ON
	Interior light command	INTERIOR LIGHT	Light off command: OFF
	Foot light command	FOOT LIGHT	Light on command: ON
	Foot light command	FOOT LIGHT	Light off command: OFF
	Left turn signal command	TURN LEFT	Light on command: ON
	Left turn signal command	TURN LEFT	Light off command: OFF
	Right turn signal command	TURN RIGHT	Light on command: ON
	Right turn signal command	TURN RIGHT	Light off command: OFF
	Hazard flasher command	HAZARD	Hazard on command: ON
	Hazard flasher command	HAZARD	Hazard off command: OFF
	Headlight command	HEADLIGHT	Light on command: ON
	Headlight command	HEADLIGHT	Light off command: OFF
	Headlight high beam command	HEADLIGHT HI	Light on command: ON
	Headlight high beam command	HEADLIGHT HI	Light off command: OFF
	Parking light command	SMALL LIGHT	Light on command: ON
	Parking light command	SMALL LIGHT	Light off command: OFF
	Front fog light command	FR FOG	Light on command: ON
	Front fog light command	FR FOG	Light off command: OFF
	Rear defroster command	R DEFROSTER	Defroster on command: ON
	Rear defroster command	R DEFROSTER	Defroster off command: OFF
	Rear fog light command	RR FOG	Light on command: ON
	Rear fog light command	RR FOG	Light off command: OFF

**input:**
System Menu	Description	Data List Indication
Gauge	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door Closed:OFF
	Passenger's door switch	PASSENGER DOOR	Door open: ON
	Passenger's door switch	PASSENGER DOOR	Door Closed:OFF
	Left rear door switch	DRV REAR DOOR	Door open: ON
	Left rear door switch	DRV REAR DOOR	Door Closed:OFF
	Right rear door switch	PA REAR DOOR	Door open: ON
	Right rear door switch	PA REAR DOOR	Door Closed:OFF
	Trunk switch	TRUNK/TAIL GATE	Trunk open: ON
	Trunk switch	TRUNK/TAIL GATE	Trunk Closed:OFF
	Rear fog light	RR FOG	Light on command: ON
	Rear fog light	RR FOG	Light off command:OFF
	Trunk release actuator command	TRUNK UNLOCK	Release command: ON
	Trunk release actuator command	TRUNK UNLOCK	Other: OFF
	Head light OFF switch	HEAD LIGHT OFF SW	In off position: ON
	Head light OFF switch	HEAD LIGHT OFF SW	In other positions: OFF
	Headlight switch parking light position switch	SMALL SW	In park light position: ON
	Headlight switch parking light position switch	SMALL SW	In other positions: OFF
	Headlight switch ON position	HEAD LIGHT ON SW	In headlight position: ON
	Headlight switch ON position	HEAD LIGHT ON SW	In other positions: OFF
	Headlight switch dimmer position	HEAD LIGHT DIMMER	In hi-beam position: ON
	Headlight switch dimmer position	HEAD LIGHT DIMMER	In low-beam position: OFF
	Headlight switch passing position	PASSING SW	Passing switch on: ON
	Headlight switch passing position	PASSING SW	Passing switch off: OFF
	Left turn signal switch	TURN LEFT SW	In left position: ON
	Left turn signal switch	TURN LEFT SW	Neutral position: OFF
	Right turn signal switch	TURN RIGHT SW	In right position: ON
	Right turn signal switch	TURN RIGHT SW	Neutral position: OFF
	Left turn signal command	TURN LEFT	Light on command: ON
	Left turn signal command	TURN LEFT	Light off command: OFF
	Right turn signal command	TURN RIGHT	Light on command: ON
	Right turn signal command	TURN RIGHT	Light off command: OFF
	Hazard flasher command	HAZARD	Hazard on command: ON
	Hazard flasher command	HAZARD	Hazard off command: OFF
	Headlight command	HEADLIGHT	Light on command: ON
	Headlight command	HEADLIGHT	Light off command: OFF
	Headlight high beam command	HEADLIGHT HI	Light on command: ON
	Headlight high beam command	HEADLIGHT HI	Light off command: OFF
	Parking light command	SMALL LIGHT	Light on command: ON
	Parking light command	SMALL LIGHT	Light off command: OFF
	Front fog light command	FR FOG	Light on command: ON
	Front fog light command	FR FOG	Light off command: OFF
	Brake pedal position switch	STOP SW	Brake pedal pushed: ON
	Brake pedal position switch	STOP SW	Brake pedal released: OFF

**Input:**
System Menu	Description	Data List Indication
Gauge	Ignition key cylinder switch	IGNITION KEY CYL SW	Key in ignition: ON
	Ignition key cylinder switch	IGNITION KEY CYL SW	Key out of ignition: OFF
	Driver's seat belt buckle switch	DRV SEAT BELT	Unbuckled: ON
	Driver's seat belt buckle switch	DRV SEAT BELT	Buckled: OFF
	Automatic transmission gear position switch R position	SHIFT R POSITION	Shifter in reverse position: ON
	Automatic transmission gear position switch R position	SHIFT R POSITION	Shifter in other position: OFF
	Cruise main switch input	CRUISE MAIN	Cruise main switch on: ON
	Cruise main switch input	CRUISE MAIN	Cruise main switch off: OFF
	Oil pressure switch input	OIL PRESS SW	Engine off (low pressure): ON
	Oil pressure switch input	OIL PRESS SW	Engine running: OFF
	Reset/Select switch	SELECT/RESET	Reset button pushed: ON
	Reset/Select switch	SELECT/RESET	Reset button released: OFF
	Parking brake switch	PARK BRAKE	Park brake lever pulled: ON
	Parking brake switch	PARK BRAKE	Park brake lever released: OFF
	Brake fluid level switch	BRAKE FLUID SW	Fluid level low: ON
	Brake fluid level switch	BRAKE FLUID SW	Fluid level normal: OFF
	Fuel sending unit input 1	FUEL LEVEL 1	Fuel tank empty: 4V
			Fuel tank half full: 2.5V
			Fuel tank full: 1V
	Fuel sending unit input 2	FUEL LEVEL 2	Fuel tank empty: 5°
			Fuel tank half full: 50°
			Fuel tank full: 100°
	ABS indicator	ABS INDI	Indicator command on: ON
	ABS indicator	ABS INDI	Indicator command off: OFF
	EBD (brake light) indicator	EBD INDI	Indicator command on: ON
	EBD (brake light) indicator	EBD INDI	Indicator command off: OFF
	MIL indicator	MIL INDI STATUS	Indicator command on: ON
	MIL indicator	MIL INDI STATUS	Indicator command off: OFF
	Oil pressure indicator	OIL PRESS INDI	Indicator command on: ON
	Oil pressure indicator	OIL PRESS INDI	Indicator command off: OFF
	Charge system indicator	CHARGING LIGHT	Indicator command on: ON
	Charge system indicator	CHARGING LIGHT	Indicator command off: OFF
	Cruise main switch ON indicator	Cruise M SW INDI	Indicator command on: ON
	Cruise main switch ON indicator	Cruise M SW INDI	Indicator command off: OFF
	VSA indicator	VSA INDI	Indicator command on: ON
	VSA indicator	VSA INDI	Indicator command off: OFF
	High beam indicator	HIGH BEAM INDI	Indicator command on: ON
	High beam indicator	HIGH BEAM INDI	Indicator command off: OFF
	Parking light ON indicator	SMALL LIGHT INDI	Indicator command on: ON
	Parking light ON indicator	SMALL LIGHT INDI	Indicator command off: OFF
	Low fuel warning indicator	LOW FUEL INDI	Indicator command on: ON
	Low fuel warning indicator	LOW FUEL INDI	Indicator command off: OFF
	Security indicator	SECURITY INDI	Indicator command on: ON
	Security indicator	SECURITY INDI	Indicator command off: OFF
	Fuel gauge needle command	FUEL INDI	Fuel tank empty: 4V
			Fuel tank half full: 2.5V
			Fuel tank full: 1V

**Input:**
System Menu	Description	Data List Indication
Door lock	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door closed: OFF
	Passenger's door switch	PASSENGER DOOR	Door open: ON
	Passenger's door switch	PASSENGER DOOR	Door closed: OFF
	Left rear door switch	DRV REAR DOOR	Door open: ON
	Left rear door switch	DRV REAR DOOR	Door closed: OFF
	Right rear door switch	PA REAR DOOR	Door open: ON
	Right rear door switch	PA REAR DOOR	Door closed: OFF
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch pushed: ON
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch released: OFF
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch pushed: ON
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch released: OFF
	Right super locking (KE model)	RIGHT SUPER LOCK	Door open: ON
	Right super locking (KE model)	RIGHT SUPER LOCK	Door close: OFF
	Left super locking (KE model)	LEFT SUPER LOCK	Door open: ON
	Left super locking (KE model)	LEFT SUPER LOCK	Door close: OFF
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob up: ON
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob down: OFF
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob up: ON
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob down: OFF
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB LKUN	Knob up: ON
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB LKUN	Knob down: OFF
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob up: ON
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob down: OFF
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob up: ON
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob up: OFF
	Driver's door key cylinder switch (LOCK)	DRV KEY CYL LK	Key turned to lock: ON
	Driver's door key cylinder switch (LOCK)	DRV KEY CYL LK	Neutral position: OFF
	Driver's door key cylinder switch (UNLOCK) (Except KE model)	DRV KEY CYL UNLK	Key turned to unlock: ON
		DRV KEY CYL UNLK	Neutral position: OFF
	Door lock LOCK command	DOR LOCK	Lock command: ON
	Door lock LOCK command	DOR LOCK	Other: OFF
	Door lock UNLOCK command	DOR UNLOCK	Unlock command: ON
	Door lock UNLOCK command	DOR UNLOCK	Other: OFF
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Unlock command: ON
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Other: OFF
Climate control	Air conditioner pressure switch	A/C PRESSURE SW	A/C on: ON

**Input:**
System Menu	Description	Data List Indication
Keyless	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door Closed: OFF
	Passenger's door switch	PASSENGER DOOR	Door open: ON
	Passenger's door switch	PASSENGER DOOR	Door Closed: OFF
	Left rear door switch	DRV REAR DOOR	Door open: ON
	Left rear door switch	DRV REAR DOOR	Door Closed: OFF
	Right rear door switch	PA REAR DOOR	Door open: ON
	Right rear door switch	PA REAR DOOR	Door Closed: OFF
	Trunk switch	TRUNK/TAIL GATE	Trunk open: ON
	Trunk switch	TRUNK/TAIL GATE	Trunk closed: OFF
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch pushed: ON
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch released: OFF
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch pushed: ON
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch released: OFF
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob up: ON
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob down: OFF
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob up: ON
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob down: OFF
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB UNLK	Knob up: ON
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB UNLK	Knob down: OFF
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob up: ON
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob down: OFF
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob up: ON
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob down: OFF
	Driver's door key cylinder switch (LOCK)	DRV KEY CYL LK	Key turned to lock: ON
	Driver's door key cylinder switch (LOCK)	DRV KEY CYL LK	Neutral position: OFF
	Driver's door key cylinder switch (UNLOCK) (Except KE model)	DRV KEY CYL UNLK	Key turned to lock: ON
		DRV KEY CYL UNLK	Neutral position: OFF
	Ignition switch (IG 1)	IGNITION KEY	Ignition ON (II): ON
	Ignition switch (IG 1)	IGNITION KEY	Other positions: OFF
	Door lock LOCK command	DOR LOCK	Lock command: ON
	Door lock LOCK command	DOR LOCK	Other: OFF
	Door lock UNLOCK command	DOR UNLOCK	Unlock command: ON
	Door lock UNLOCK command	DOR UNLOCK	Other: OFF
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Unlock command: ON
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Other: OFF
	Trunk release actuator command	TRUNK UNLOCK	Release command: ON
	Trunk release actuator command	TRUNK UNLOCK	Other: OFF

**Input:**
System Menu	Description	Data List Indication
Security	Driver's door switch	DRIVER'S DOOR	Door open: ON
	Driver's door switch	DRIVER'S DOOR	Door closed: OFF
	Passenger's door switch	PASSENGER'S DOOR	Door open: ON
	Passenger's door switch	PASSENGER'S DOOR	Door closed: OFF
	Left rear door switch	DRV REAR DOOR	Door open: ON
	Left rear door switch	DRV REAR DOOR	Door closed: OFF
	Right rear door switch	PA REAR DOOR	Door open: ON
	Right rear door switch	PA REAR DOOR	Door closed: OFF
	Trunk switch	TRUNK/TAIL GATE	Trunk open: ON
	Trunk switch	TRUNK/TAIL GATE	Trunk closed: OFF
	Hood switch	ENG HOOD SW	Hood open: ON
	Hood switch	ENG HOOD SW	Hood closed: OFF
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch pushed: ON
	Driver's door lock switch (LOCK)	DRV RM DOR LK	Switch released: OFF
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch pushed: ON
	Driver's door lock switch (UNLOCK)	DRV RM DOR UNLK	Switch released: OFF
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob up: ON
	Driver's door lock knob switch (LOCK)	DRV RM DOR KNOB LK	Knob down: OFF
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob up: ON
	Driver's door lock knob switch (UNLOCK)	DRV RM DOR KNOB UNLK	Knob down: OFF
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB LKUN	Knob up: ON
	Passenger's door lock knob switch (UNLOCK)	PA RM DOR KNOB LKUN	Knob down: OFF
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob up: ON
	Left rear door lock knob switch (UNLOCK)	DRV R KNOB UNLK	Knob down: OFF
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob up: ON
	Right rear's door lock knob switch (UNLOCK)	PA L KNOB UNLK	Knob down: OFF
	Ignition switch (IG 1)	IGITION KEY	Ignition ON (II): ON
	Ignition switch (IG 1)	IGITION KEY	Other position: OFF
	Horn command	HORN	Horn on command: ON
	Horn command	HORN	Horn off command: OFF
	Door lock LOCK command	DOR LOCK	Lock command: ON
	Door lock LOCK command	DOR LOCK	Other: OFF
	Door lock UNLOCK command	DOR UNLOCK	Unlock command: ON
	Door lock UNLOCK command	DOR UNLOCK	Other: OFF
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Unlock command: ON
	Driver's door lock UNLOCK command	DRV DOR UNLOCK	Other: OFF
	Trunk release actuator command	TRUNK UNLOCK	Release command: ON
	Trunk release actuator command	TRUNK UNLOCK	Other: OFF
	Hazaed flasher command	HAZARD	Hazard on command: ON
	Hazaed flasher command	HAZARD	Hazard off command: OFF

**Output:**
System	Description	Data List Indication
Gauge	Speedometer displays value inputted	SPEEDOMETER DRIVE
	Tachometer displays value inputted	TACHOMETER DRIVE
	Fuel gauge displays value inputted	FUEL GAUGE DRIVE
	Temperature gauge displays value inputted	ENGINE TEMP GAUGE
	Turns ABS indicator on/off	ABS INDICATOR
	Turns BRAKE indicator on/off	EBD INDICATOR
	Turns MIL on/off	MIL STATUS
	Turns washer level indicator on/off	WASHER INDI
	Turns DRL indicator on/off	DRL INDI
	Turns oil indicator on/off	OIL INDI
	Turns charging system indicator on/off	CHARGING INDI
	Turns cruise main switch indicator on/off	CRUISE SW LIGHT
	TURNS maintenance required indicator on/off	MAIN REQ'D INDI
	Turns high beam indicator on/off	HIGH BEAM INDI
	Turns light on indicator on/off	LIGHT ON INDI
	Turns low fuel indicator on/off	LOW FUEL INDI
	Turns security indicator on/off	SECURITY INDI
	Displays inputted value	TRIP METER
	Turns A/T P position indicator on/off	AT GEAR INDI P
	Turns A/T R position indicator on/off	AT GEAR INDI R
	Turns A/T N position indicator on/off	AT GEAR INDI N
	Turns A/T D position indicator on/off	AT GEAR INDI D
	Turns A/T D3 position indicator on/off	AT GEAR INDI D3
	Turns A/T 2 position indicator on/off	AT GEAR INDI 2
	Turns A/T 1 position indicator on/off	AT GEAR INDI 1
	Controls gauge illumination brightness to inputted value	ILLUMI CONTROL
	Turns key chime on/off	KEY ALARM
	Turns headlight chime on/off	HEADLIGHT ALARM
	Turns seatbelt chime on/off	SEATBELT ALARM
Lighting	Turns ignition key cylinder light on/off	IGNITION KEY LIGHT
	Turns interior light(s) on/off	INTERIOR LIGHT
	Turns foot light on/off	FOOT LIGHT
	Turns left signal light on/off	TURN LEFT
	Turns right turn signal light on/off	TURN RIGHT
	Turns hazard lights on/off	HAZARD
	Turns headlights on/off	HEADLIGHTS
	Turns high beams on/off	HEADLIGHTS (HIGH)
	Turns parking lights on/off	PARKING LIGHTS
Door lock	Controls lock and unlock functions on command	DOOR LOCKS
Keyless	Turns trunk release actuator on/off	TRUNK UNLOCK
Climate control	Turns rear defoster on/off	REAR DEFROSTER
Power window	Runs driver's window up	DR'S PW UP
	Runs driver's window down	DR'S PW DOWN
	Runs passenger's window up	AST'S PW UP
	Runs passenger's window down	AST'S PW DOWN
	Runs left rear window up	LEFT REAR PW UP
	Runs left rear window down	LEFT REAR PW DOWN
	Runs right rear window up	RIGHT REAR PW UP
	Runs right rear window down	RIGHT REAR PW DOWN
	Turns power window relay on/off	PW RELAY
Wiper	Turns wiper low speed on/off	FRONT WIPER LOW
	Turns wiper high speed on/off	FRONT WIPER HIGH
	Turns washer on/off	FRONT WIPER WASHER
	Turns wiper intermittent function on/off	INT WIPER
Security	Turns horns on/off	HORN
Climate control	Initiates climate control self test function	CLMT CNTROL SLF TST (INSPECTION MENU)

B-CAN System Unit input/output

NOTE; Not all inputs apply to all trim levels.

Relay Control Module
Input signal	Output signal/Device
A/C pressure switch, Climate control switch, Hood switch, Horn switch, Windshield wiper motor.	Headlight, Parking light, Horn, Windshield washer motor, Windshield wiper motor.

Door Multiplex Control Unit
Input signal	Output signal
Driver's door key cylinder switch (lock/unlock), Driver's door lock knob switch (lock/unlock), Driver's door lock switch. Driver's power window switches (up, down, auto up, auto down), Passenger's power window switches (up, down), Driver's power window motor pulser.	Driver's power window motor, passenger's power window switches, Power window relay control.

Multiplex Integrated Control Unit
Input signal	Output signal/Device
Audio unit security ground, Brake pedal position switch, Door switches, Ignition key cylinder switch, Park pin switch (A/T), Passenger's door lock knob switches (unlock), Passenger's door lock switch, Power window motor, Seat belt switch (unbackled), Transmission range switch ([P], [R] position), Trunk latch switch.	Door lock actuators, Hazard warning lights, Interior lights, Ignition key light, Key interlock solenoid, Trunk lock actuator, Turn signal lights, Trunk lid opener solenoid, Door curtesy lights.

Gauge Control Module
Input signal	Output signal/Device
Dash lights brightness controller volume, Engine oil pressure switch signal, Parking brake switch, Brake fluid level switch, fuel level sensor, Select/Reset switch.	Dash lights, Fuel gauge, Gauge lights, Indicator, LEDs, Speedometer, Tachometer, ECT gauge, Warning buzzer, Odometer/Outside temperature display

Climate Control Unit
Input signal	Output signal/Device
Evaporator temperature sensor, In-car temperature sensor,Outside air temperature sensor, Sunlight sensor Air mix motor position (Driver's + Passenger's with dual zone), mode motor position, Blower motor control feed back.	Air mix control motors (Driver's/Passenger's), Blower motor transistor, Mode control motor, Rear deffogger relay, A/C Reguest, Recirculation motor.