CONTROLLER AREA NETWORK

THE CAN DATA BUS IN THE CONVENIENCE SYSTEM

In the convenience system, the CAN data The following functions of the convenience
bus currently connects the control units system transfer data:
of the convenience system. • Central locking
These are • Electric windows
• a central control unit and • Switch illumination
• two or four door control units. • Electrically adjustable and heated door

The structure of the CAN data bus in the mirrors
convenience system • Self-diagnosis
The lines of the control units converge at
one point in a star pattern. The INSTITUT KEMAHIRAN BELIA NEGARA
advantage: if one of the control units KUALA PERLIS
fails, the other control units are still able
to send their data protocols.

WHAT ARE THE ADVANTAGES OF THE CAN DATA BUS IN THE
CONVENIENCE SYSTEM?

• Fewer lines are routed via the door connections.
• In the event of a short circuit to earth, to positive or

between lines, the CAN data bus goes to emergency running
mode and changes over to single-wire mode.
• Fewer diagnosis lines are required, because self-diagnosis is
handled entirely by the central control unit.

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INFORMATION IN THE CONVENIENCE SYSTEM

The table shows you part of the data field of the driver’s door control unit by way of an example.
You can see how and what information regarding the status of the central locking and the electric
windows is transferred.

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ETACS :
Electric Time & Alarm

Control System

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ETACS – COMMUNICATION
METHOD

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ETACS
Electric Time and Alarm Control System

- ETACS realizes useful functions for the driver.
( Mitsubishi original body controller )

- Some functions can be customized by MUT-3.

Sun roof Power Meter
window
Front CAN MUT
ECU SWS

ETACS

Column A/C
Switch ABS

Keyless entry Warning buzzer Engine
AT
Wiper Exterior lamp

Center door lock Room lamp

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Customization

Some ETACS functions can
be customized by using MUT

MUT ETACS

--- Customization functions --- Functions

Turn signal buzzer INSTITUT KEMAHIRAN BELIA NEGARA
Turn signal KUALA PERLIS
Intermittent time of rear wiper
Headlamp auto-cut
Speed sensitive wipers
Interior lamp auto-cut
Keyless entry answer-back

Chassis Electrical

On board communication network system

4 kinds of network architecture

- LIN (Local Inconnect Network)
- CAN-B
- CAN-C
- Diagnosis CAN-C

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Harness Repair

Do not route
one wire only
as a repair!

The maximum
untwisted
length should
be 10 cm

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Harness Repair

Do not make change of
the connecting points for
repair.Always connect a
node to the main bus

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CAN > Service Precautions

CAUTION

•A digital multi-meter should be used when measuring resistance or voltage in CAN bus lines.
Otherwise, the equipment connected through the CAN lines may be damaged.
•Disconnect the negative battery terminal when measuring the resistance in CAN bus line.
Otherwise, the equipment connected through the CAN lines may be damaged.
•The test wiring harness (special tool) should be used to measure the voltage or resistance at a
female connector. Otherwise, the connector may be damaged.
•The strand end of the twisted wires should be within 10 cm from the connector.
If you repair the twisted wires due to a defective connector or other reason, the strand end of the
twisted wire should be within 10 cm from the connector. If it is 10 cm or more away from the
connector, twist the wire just like the original condition. In such a condition, a communication error
may occur.
•Strictly observe the specified wiring harness repair procedure when repairing a CAN bus line.
Otherwise, an error in the CAN communication may occur.

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What is BCM?

Body Control Module

BCM means that all basic/standard body functions
of a car will be controlled by one integrated control

module .

BCM can offer interesting & value added
features to customer.

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Provide more Improve As a selling
value added productivity point to
features customer.

Cost Benefits Reduce
reduction weight

Cost Diagnostic Reduce total
efficiency ability components

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BCM (Body Control Module)
> System diagram

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Chassis electrical Change Item BCM
Addition
Independence Mirror fold c/u Central lock c/u
Timer c/u
Control Unit

Deletion

Buzzer c/u

Flasher c/u

Alarm c/u

Defogger relay Horn relay Trunk release relay Driver un-lock relay
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Chassis electrical Change Item

Column switch Intermittent circuitry move
to BCM and simplified
existing circuit diagram.

BCM

WIPER MOTOR

WIPER MOTOR

Chassis electrical Change Item

Switch assy. Center; consist of 1. Front fog lamp switch
2. Hazard switch
3. Rear defogger switch
4. Rear fog lamp switch

NO Reset Alarm Switch

1 2 34 All the controller
circuitry move to

BCM.

(DELETE)

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Functions by BCM

Items Operation Remarks
1. Room Lamp battery saver Room lamp switch at
If no change of state for doors and interior ‘ON’ condition
2. Room Lamp dimmer lamp switch to permanent ON, lamp will Room lamp must be at
remain ON until timer reach 20 minutes. ‘DOOR’ position
3. Lane change flashing
4. Front & rear wiper drip Both room lamps will turn ON when any door Hazard only ‘ON’ but
wiping open. When all doors closed, lamp become manually ‘OFF’
5. Hazard on deceleration dim gradually and turn OFF completely after Rear wiper will follow
6. Reverse gear wipe 30s or immediately OFF after receive lock the front wiper speed
key command.
Once unlock command received, room lamp
automatically ON.

Tap gently on the turn signal switch, turn
signal will flash for 3 times.

Operating front washer + wipe will activate
one more wipe after 5 seconds to remove
excessive water on windscreen.

Sudden braking at or above speed 96km/h
will activate hazard light.

While front wiper ‘ON’, engaging reverse
gear will activate rear wiper.

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Functions by BCM

Items Operation Remarks
7. Programmable front wiper
INT To activate the function, front wiper INT must Timing range minimum
activate first then switch OFF. Duration 1 sec and maximum
8. Driver door unlock between front wiper park and next INT switch 20 sec
activation will be stored and use as INT
9. Central lock overheating timing.
protection
10. Speed auto lock This can be change by push lock + unlock by Car condition must be
11. Auto unlock by key removed 2 sec. 1st press unlock button will switch to in lock/arm condition
driver door unlock. 2nd press will unlock other before configure at
12. Crash unlock 3 doors. key transmitter

Operation of lock/unlock continuously will 30 times
prevent from door actuators from
overheating. Last position will be at unlock. Configurable by
diagnostic tools
Vehicle central lock activate after vehicle (PADT-07) either
speed above 20km/h remove key or engine
stop.
Vehicle auto unlock will activate once key
remove from key barrel

During crash, vehicle unlock together with SRS Airbags must be
hazard light flash. deploy.

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Functions by BCM

Items Operation Remarks
13. Front wiper speed change
14. Door open warning Front wiper speed will change to INT when Alarm is armed and
15. Alarm history vehicle 0 km/h door ajar will indicate
the door
16. Vehicle search Buzzer will indicate that door is open when
speed more than 7 km/h

Indicate at door ajar indicator if car been
broke down .

To search vehicle push ‘LOCK’ button 2
times. Buzzer will sound 3 times and hazard
will flash 3 times

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THANK YOU

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