Mazda CX-9 Grand Touring 2007 Manual page 583

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Make sure to reconnect all
disconnected connectors.
Turn ignition switch to the ON
position (Engine off).
Clear the DTC from the PCM
memory using the M-MDS.
Start the engine and warm it up
completely.
Is same DTC present?
10 VERIFY AFTER REPAIR
PROCEDURE
Perform the "After Repair
Procedure".
(See AFTER REPAIR
PROCEDURE [MZI-3.5].)
Are any DTCs present?
DTC P0454 [MZI-3.5]
DTC P0454 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
DTC P0454 Fuel tank pressure sensor intermittent
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0454 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
2007 Mazda CX-9 Grand Touring
The fuel tank pressure changes more than 14 inches of water in 0.10 s.
Intermittent open or short in the fuel tank pressure sensor or the fuel tank
pressure sensor signal
Fuel tank pressure sensor malfunction
INSPECTION
REMOVAL/INSTALLATION [MZI-
3.5] .)
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See DTC TABLE [MZI-3.5].)
No Troubleshooting completed.
ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to