DTC P0022 [MZI-3.5]
DTC P0022 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
[MZI-3.5]
.)
4
INSPECT OCV (LH)
z
Inspect the OCV (LH).
(see
OIL CONTROL VALVE
(OCV) INSPECTION [MZI-3.5].
)
z
Is there any malfunction?
Yes
Replace the OCV (LH), then go to the
next step.
(see
OIL CONTROL VALVE (OCV)
REMOVAL/INSTALLATION [MZI-
3.5].
)
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF
DTC P0021 HAS BEEN COMPLETED
z
Make sure to reconnect all
disconnected connectors.
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Turn the ignition switch off.
z
Start the engine and warm it up
completely.
z
Is the 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.
6
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 P0022
CMP timing over-retarded (LH)
DETECTION
CONDITION
z
The PCM monitors the variable valve timing position for over-retarded
camshaft timing. The test fails when the camshaft timing exceeds a
maximum calibrated value or remains in a retarded position.
POSSIBLE CAUSE
z
OCV (LH) malfunction
z
Low engine oil pressure
z
Spool valve in the OCV (LH) is stuck in retard position
z
Improper valve timing due to timing chain slippage
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:29 AM
Page 39
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