DTC P0579 [MZI-3.7]
DTC P0579 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
harness-side) and PCM terminal
2AU (wiring harness-side)
z
Are there continuity?
9
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE HEATER
FITTING
z
Inspect the PCV valve heater control and
PCV valve heater fitting.
(See
POSITIVE CRANKCASE
VENTILATION (PCV) VALVE
INSPECTION [MZI-3.7]
.)
(See
POSITIVE CRANKCASE
VENTILATION (PCV) VALVE
HEATER FITTING INSPECTION
[MZI-3.7]
.)
z
Is there any malfunction?
Yes
Replace the malfunctioning part, then go to
the next step.
No
Go to the next step.
10
VERIFY TROUBLESHOOTING OF DTC
P053A HAS BEEN COMPLETED
z
Verify that all disconnected connectors
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-3.7]
.)
z
Is the PENDING CODE for the DTC
present?
Yes
Replace the PCM, then go to the next step.
(See
PCM REMOVAL/INSTALLATION
[MZI-3.7]
.)
No
Go to the next step.
11
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 P0579
Cruise control multi-function input circuit range/performance
DETECTION
z
P0579 may set when the cruise control switch circuits are open, shorted to
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:39 AM
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