z
Pressurize the fuel system. Refer
to the Workshop Fuel System for
the Fuel System Pressure Release
procedure to pressurize the fuel
system.
z
Compare the fuel pressure reading
to the Fuel System Specification
Chart.
z
Is the fuel pressure within range?
6
INSPECT FUEL PUMP GROUND
CIRCUIT FOR OPEN CIRCUIT IN
WIRING HARNESS
z
Disconnect the fuel pump
connector.
z
Measure the resistance between
fuel pump connector terminal D
(wiring harness-side) and body
ground.
z
Is the voltage less than 0.5 ohm?
NOTE:
z
Refer to the Wiring Diagrams
Manual for schematic and
connector information.
Yes
Go to the next step.
No
Repair or replace suspected part, Then go
to Step 11.
7
INSPECT FUEL PUMP POWER
SUPPLY CIRCUIT FOR OPEN
CIRCUIT IN WIRING HARNESS
z
Disconnect the fuel pump
connector.
z
Turn the ignition switch to the ON
position (Engine off).
z
Access the PCM and control the
FP PID.
z
Measure the voltage between fuel
pump connector terminal B
(wiring harness-side) and body
ground.
z
Is the voltage more than 10 V?
Yes
Go to the next step.
No
Repair or replace suspected part, Then go
to Step 11.
8
INSPECT FUEL PRESSURE LEAK
NOTE:
Yes
Perform the KOEO self-test. Go to Step
10.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:30 AM
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