Can Communication System Description - Suzuki 2006 SX4 Service Manual

CAN Communication System Description

ECM (1), ABS control module (2), BCM (3), combination meter (4), keyless start control module (if equipped with
keyless start control system) (5), 4WD control module (for 4WD model) (6)and TCM (for A/T model) (7) of this vehicle
communicate control data between each control module.
Communication of each control module is established by CAN (Controller Area Network) communication system.
CAN communication system uses the serial communication in which data is transmitted at a high speed. It uses a
twisted pair of two communication lines for the high-speed data transmission. As one of its characteristics, multiple
control modules can communicate simultaneously. In addition, it has a function to detect a communication error
automatically. Each module reads necessary data from the received data and transmits data. ECM communicates
control data with each control module as follows.
[A]
6
4
5
[B]
6
4
5
[A]: Non-Taiwan model
Engine General Information and Diagnosis:
[B]: Taiwan model
1A-9
S6RW0D1101005
7
1
2
3
7
1
2
3
I6RW0D110002-01