Mazda CX-9 2007 Service Highlights page 297

07-02 ON-BOARD DIAGNOSTIC
ON-BOARD DIAGNOSTIC
FUNCTION OUTLINE . . . . . . . . . . . . . . 07-02–1
Features . . . . . . . . . . . . . . . . . . . . . . . . 07-02–1
ON-BOARD DIAGNOSTIC
FUNCTION BLOCK DIAGRAM. . . . . . . 07-02–1
ON-BOARD DIAGNOSTIC
FUNCTION . . . . . . . . . . . . . . . . . . . . . . 07-02–2
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ON-BOARD DIAGNOSTIC FUNCTION OUTLINE
NG: ON-BOARD DIAGNOSTIC FUNCTION
Features
• Includes the on-board diagnostic function and A/C operation check mode. The on-board diagnostic function
consists of a malfunction detection function that detects malfunctions in input/output signals, a memory
function that stores detected malfunctions, a fail-safe function that prevents an operating malfunction of output
parts where a malfunction is detected, and a malfunction display function that displays detected malfunctions.
• The malfunction display function and output device operation function is accessed by connecting GND to the
check connector.
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ON-BOARD DIAGNOSTIC FUNCTION BLOCK DIAGRAM
INPUT DEVICE
End Of Sie
ON-BOARD DIAGNOSTIC
FRONT CLIMATE CONTROL UNIT
ON-BOARD DIAGNOSTIC FUNCTION
NG
OK
MALFUNCTION
DETECTION
FUNCTION
Malfunction detection function. . . . . . . . 07-02–2
Fail-safe function . . . . . . . . . . . . . . . . . . 07-02–2
Memory Function . . . . . . . . . . . . . . . . . 07-02–2
Display Function . . . . . . . . . . . . . . . . . . 07-02–2
Present Malfunction Display Mode . . . . 07-02–2
Past Malfunction Display Mode . . . . . . . 07-02–3
A/C Operation Check Mode . . . . . . . . . 07-02–5
MALFUNCTION
DISPLAY
FUNCTION
MEMORY FUNCTION
FAIL-SAFE FUNCTION
NORMAL
CONTROL
id070200100100
07-02
id070200100200
CHECK
CONNECTOR
OUTPUT DEVICE
am8rrn00000261
07-02–1