Mazda 2007 CX-9, Service Highlights, Page: 170 / 614

ON-BOARD DIAGNOSTIC
04-02–2
ON-BOARD DIAGNOSTIC SYSTEM OUTLINE
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•
The on-board diagnostic system consists of a malfunction detection system that detects abnormalities in input/
output signals when the ignition switch is at the ON position, a data monitor function that reads out specified
input/output signals and a simulation function that allows for override operation of output parts (such as
solenoid valves).
•
The data link connector 2 (DLC-2), which groups together all the connectors used for malfunction diagnosis
and detecting/repair into a single location, has been adopted, thereby improving serviceability. Diagnosis is
performed by connecting the Mazda Modular Diagnostic System (M-MDS) to the DLC-2.
•
In addition to DTC read-out, the Mazda Modular Diagnostic System (M-MDS) is used to clear DTCs using the
display screen of the diagnostic tester, and to access the PID/data monitor and simulation functions, providing
enhanced malfunction diagnosis and improved serviceability.
Block Diagram
End Of Sie
DLC-2
ON-BOARD DIAGNOSTIC FUNCTION
MEMORY
FUNCTION
MALFUNCTION DISPLAY
FUNCTION
SERIAL
COMMUNICATION
MALFUNCTION
DETECTION
FUNCTION PID/DATA
MONITOR
FUNCTION
ACTIVE COMMAND
MODES FUNCTION
FAIL-SAFE
FUNCTION
HU
INSPECTION
FUNCTION
INPUT
DEVICE
NORMAL CONTROL AREA
OUTPUT
DEVICE
DSC
INDICATOR
LIGHT
TCS OFF
LIGHT
ABS
WARNING
LIGHT
BRAKE
SYSTEM
WARNING
LIGHT
MAZDA MODULAR
DIAGNOSTIC SYSTEM
(M-MDS)
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