Mazda CX-9 Grand Touring 2009 Manual page 1068

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
INSPECT FOR SMALL LEAK BETWEEN
FUEL TANK VAPOR TUBE AND FUEL
TANK FILLER PIPE
Transfer the plug from the fuel vapor hose
joint to the fuel tank vapor tube.
Pressurize EVAP system to 3.48 kPa (PID
12
FTP_H2O displays "14").
Using the ultrasonic leak detector, check the
fuel tank vapor tube to the fuel tank for
leaks. Check the FTP sensor, fuel tank vapor
tube and the fuel-filler pipe.
Is a leak detected?
EVAP SYSTEM LEAK TEST
Connect all disconnected connectors and
hoses.
13
Perform the EVAP System Leak Test. (See
ENGINE CONTROL SYSTEM
OPERATION INSPECTION [MZI-3.7] .)
Are the test results normal?
VERIFY TROUBLESHOOTING OF DTC
P0442, P0456 HAS BEEN COMPLETED
Verify that all disconnected connectors are
reconnected.
Turn the ignition switch to the ON position
(Engine off).
14
Clear the DTC from the PCM memory using
the M-MDS.
Start the engine and run it at idle.
Retrieve DTCs using the M-MDS.
Is the PENDING CODE for this DTC
present?
DTC P0443 [MZI-3.7]
DTC P0443 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P0443 Purge solenoid valve circuit
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
The PCM monitors the state of the purge solenoid valve circuit output driver. The
test fails when the signal moves outside the minimum or maximum limit for the
commanded state.
Repair or install a new component. Go to
Yes
the next step.
Reconnect the fuel vapor tube to the fuel
No
vapor hose joint. Go to Step 13.
Yes Go to the next step.
Leakage still exists. Locate leak point and
No
repair. Repeat this step.
Replace the PCM, then go to the next step.
(See PCM
Yes
REMOVAL/INSTALLATION [MZI-
3.7] .)
No Go to the next step.