Mazda 2007 CX-9, Service Highlights

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INSTRUMENTATION/DRIVER INFO.
09-22–11
09-22
TACHOMETER CONTROL OUTLINE
id092200102300
•
The engine speed signal is output from the PCM to the microcomputer in the instrument cluster.
End Of Sie
TACHOMETER CONTROL CONSTRUCTION/OPERATION
id092200102200
System Wiring Diagram
Operation
•
The engine speed signal sent from the PCM via the CAN system is input to the microcomputer in the
instrument cluster. The microcomputer calculates the current engine speed based on the engine speed signal,
and sends an output signal to the tachometer.
End Of Sie
FUEL GAUGE CONTROL OUTLINE
id092200100800
•
The fuel level signal is output from the fuel gauge sender unit to the microcomputer in the instrument cluster.
Fuel gauge variation caused by fluctuating fuel level when cornering or driving on a slope, is reduced by
microcomputer control.
End Of Sie
FUEL GAUGE CONTROL CONSTRUCTION/OPERATION
id092200100700
System Wiring Diagram
Operation
•
A resistance according to fuel level is sent from the gauge sender unit to the microcomputer.
•
A Fuel injection amount is sent from the PCM via the CAN system to the microcomputer.
•
The microcomputer calculates the average resistance and Fuel injection amount within a specified time, and
sends the output signal to the fuel gauge based on the calculated value.
End Of Sie
IG1 B+
1V
1F 1W 1X
1H
INSTRUMENT
CLUSTER
MICROCOMPUTER
TACHOMETER
PCM
ac9uun00000189
IG1 B+
1V
1F 1R 1M
1H
INSTRUMENT
CLUSTER
MICROCOMPUTER
FUEL GAUGE
MAIN SUB (AWD)
1D
FUEL GAUGE SENDER UNIT
ac9uun00000190
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