Mazda CX-9 2007 - Page 143

ON-BOARD DIAGNOSTIC
03-02–1
03-02
03-02 ON-BOARD DIAGNOSTIC
ON-BOARD DIAGNOSTIC OUTLINE . . . 03-02–1
Block Diagram . . . . . . . . . . . . . . . . . . . 03-02–1
Self-diagnostic Function. . . . . . . . . . . . 03-02–2
External Tester
Communication Function . . . . . . . . . . 03-02–2
End of Toc
NG: ELECTRONIC 4WD CONTROL SYSTEM
ON-BOARD DIAGNOSTIC OUTLINE
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• The on-board diagnostic function allows for detecting malfunctions in the input/output signals when the ignition
key is at the ON position.
• The DLC-2, which combines the failure detection and detection maintenance connectors, has been adopted to
improve serviceability. By connecting a Mazda Modular Diagnostic System (M-MDS) to the DLC-2, malfunction
diagnosis can be carried out.
• Using a Mazda Modular Diagnostic System (M-MDS) DTCs can be retrieved or erased, depending on the
screen display, thus improving serviceability.
Block Diagram
INPUT
PA RT
OUTPUT
PA RT
REGULAR CONTROL AREA
FAIL-SAFE
FUNCTION
FAILURE DETECTION FUNCTION
MEMORY
FUNCTION
FAILURE
DISPLAY
FUNCTION
EXTERNAL TESTER
COMMUNICATION
FUNCTION
FAILURE DIAGNOSIS
FUNCTION
AWD WARNING
LIGHT
DLC-2
CAN
MAZDA MODULAR
DIAGNOSTIC
SYSTEM (M-MDS)
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