DTC P0452 [MZI-3.5]
DTC P0452 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
z
Disconnect all the PCM
connectors.
z
Visually inspect for:
{
Pushed out pins
{
Corrosion
z
Connect all the PCM connectors
and verify that they seat correctly.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this
DTC present?
No
The system is correctly. Go to the next
step.
8
VERIFY TROUBLESHOOTING OF
DTC P0451 COMPLETED
z
Verify that all disconnected
connectors are reconnected.
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Perform the "KOEO or KOER
self-test" using the M-MDS.
(See
KOEO/KOER SELF TEST
[MZI-3.5]
.)
z
Start the engine and wait for
approx. 10s
.
z
Is the PENDING CODE for the
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.
9
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
DTC troubleshooting completed.
DTC P0452
Fuel tank pressure sensor low input
z
The PCM monitors the evaporative emission (EVAP) control system fuel tank pre
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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