Mazda RX-8 2004 Service Highlights page 531

09–40 CONTROL SYSTEM
CONTROLLER AREA NETWORK (CAN)
SYSTEM OUTLINE . . . . . . . . . . . . . . . . 09–40–1
CAN SYSTEM STRUCTURAL VIEW . . . 09–40–1
CAN SYSTEM WIRING DIAGRAM . . . . . 09–40–1
CAN SYSTEM DESCRIPTION . . . . . . . . 09–40–2
Mechanism of CAN System-Related
Module . . . . . . . . . . . . . . . . . . . . . . . . 09–40–2
End of Toc
CONTROLLER AREA NETWORK (CAN) SYSTEM OUTLINE
• Due to the simplification of the wiring harness, a controller area network (CAN) system for transmission of
multiplex input/output signals among electrical modules has been adopted.
• Twisted-pair wiring is used for connections between the following modules. (Each electrical module hereafter
referred to as a CAN system-related module):
— PCM to TCM to ABS HU/CM (or DSC HU/CM) to steering angle sensor to keyless control module to EPS
control module to TPMS control module to instrument cluster
• With an on-board diagnostic function included for each multiplex module, display of DTCs using the SST (WDS
or equivalent) has improved serviceability.
End Of Sie
CAN SYSTEM STRUCTURAL VIEW
PCM
EPS CONTROL
MODULE
End Of Sie
CAN SYSTEM WIRING DIAGRAM
EPS
CONTROL
MODULE
2M
4V
PCM
4S
TWISTED PAIR
End Of Sie
CONTROL SYSTEM
STEERING
ANGLE
SENSOR
ABS HU/CU (WITH ABS)
DSC HU/CU (WITH DSC)
AT
TCM
2K
1V 1Y
R
O
WITH ABS
ABS HU/CM
H I
WITH DSC
DSC HU/CM
Twisted Pair . . . . . . . . . . . . . . . . . . . . . 09–40–2
Time Division Multiplex . . . . . . . . . . . . . 09–40–3
Vehicle CAN System . . . . . . . . . . . . . . . 09–40–3
CAN Signal-Chart . . . . . . . . . . . . . . . . . 09–40–4
On-Board Diagnostic Function . . . . . . . 09–40–5
INSTRUMENT
CLUSTER
TCM
WITH DSC
STEERING
KEYLESS
CONTROL
MODULE
3A 3B
E G
TPMS
CONTROL
MODULE
CHU094055430S01
CHU094055430S02
TPMS CONTROL
MODULE
KEYLESS CONTROL
MODULE
CHU0940S001
CHU094055430S03
ANGLE
SENSOR
E
F
1J
INSTRUMENT
CLUSTER
1L
F E
DLC-2
: CAN_H
: CAN_L
CHU0940S002
09–40–1
09–40