Mazda 2007 CX-9, Service Highlights

Page: 601 / 614

CONTROL SYSTEM
09-40–9
09-40
CAN Signal-Chart (MS-CAN)
OUT: Output (sends signal)
IN: Input (receives signal)
On-Board Diagnostic Function
•
The on-board diagnostic function is incorporated into the following module:
—
PCM
—
TCM
—
DSC/RSC HU/CM
—
AWD control module
—
BCM
—
PLG control module
—
SAS control module
—
Keyless control module
—
Instrument cluster
—
Audio unit (base module)
—
Audio amplifier
—
RES unit
—
Hands-free telephone unit
—
Information display
—
Engine off natural vacuum (Engin-off-natural-vacuum is integrated in the PCM)
•
This function can narrow down CAN system malfunction locations.
•
The on-board diagnostic function consists of the following functions.
—
Failure detection function, which detects DTCs malfunctions in CAN system-related parts.
—
Memory function, which stores detected.
—
Self-malfunction diagnostic function, which indicates system malfunctions using DTCs and warning lights.
•
Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted.
•
The CAN system has a fail-safe function. When a malfunction occurs in CAN system, the transmission module
sends a warning signal and the receiving module illuminates the warning light.
Signal
Multiplex module
Audio unit
(base module)
Audio
amplifier
RES unit
Hands-free
telephone unit
Information
display
Hands-free telephone system-related
information
IN – – OUT –
OUT – – IN –
Audio status display request OUT – – – IN
Ignition key position OUT – – – IN
Drive information system data OUT – – – IN
Buttons status OUT – – – IN
Vehicle speed OUT IN – IN –
Audio system-related information
OUT IN – – –
IN OUT IN IN –
RES-related information OUT – IN – –
Beep sound request IN IN – – OUT
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