DTC P0453 [MZI-3.5]
DTC P0453 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
z
Measure resistance between PCM
terminal 1AB (wiring harness-
side) and PCM terminal 1AL
(wiring harness-side)
z
Is the resistance more than 10
kilohms?
6
INSPECT FUEL TANK PRESSURE
SENSOR
z
Perform the fuel tank pressure
sensor inspection.
(see
FUEL TANK PRESSURE
SENSOR INSPECTION [MZI-
3.5]
.)
z
Is the fuel tank pressure sensor
normal?
Yes
Go to the next step.
No
Replace the evaporative hose component,
then go to the next step.
(see
FUEL TANK
REMOVAL/INSTALLATION [MZI-
3.5]
.)
7
VERIFY TROUBLESHOOTING OF
DTC P0452 COMPLETED
z
Make sure to reconnect all
disconnected connectors.
z
Turn ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Start the engine and warm it up
completely.
z
Is same DTC present?
Yes
Replace the PCM, then go to the next step.
(see
PCM
REMOVAL/INSTALLATION [MZI-
3.5]
.)
No
Go to the next step.
8
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "After Repair
Procedure". (See
AFTER
REPAIR PROCEDURE [MZI-
3.5]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
No
Troubleshooting completed.
DTC P0453
Fuel tank pressure sensor high input
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:33 AM
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