DTC P0454 [MZI-3.7]
DTC P0454 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0454 (MZI-3.7) DIAGNOSTIC PROCEDURE
memory using the M-MDS.
z
Start the engine and warm it up
completely.
z
Is same DTC present?
No
Go to the next step.
10
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "After Repair
Procedure". (See
AFTER REPAIR
PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0454
Fuel tank pressure sensor intermittent
DETECTION
CONDITION
z
The fuel tank pressure changes more than 14 inches of water in 0.10 s.
POSSIBLE CAUSE
z
Intermittent open or short in the fuel tank pressure sensor or the fuel
tank pressure sensor signal
z
Fuel tank pressure sensor malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins and/or
on-line repair information availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the
next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
z
Turn the ignition switch off then to the
ON position (Engine off).
Yes Go to the appropriate DTC troubleshooting. (See
DTC TABLE [MZI-3.7]
.)
Perform the "INTERMITTENT CONCERN
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:38 AM
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