Mazda CX-9 Grand Touring 2009 Manual page 1116

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
harness-side) and PCM terminal
2AU (wiring harness-side)
Are there continuity?
INSPECT PCV VALVE HEATER
CONTROL AND PCV VALVE HEATER
FITTING
Inspect the PCV valve heater control and
PCV valve heater fitting.
(See POSITIVE CRANKCASE
9 VENTILATION (PCV) VALVE
INSPECTION [MZI-3.7] .)
(See POSITIVE CRANKCASE
VENTILATION (PCV) VALVE
HEATER FITTING INSPECTION
[MZI-3.7] .)
Is there any malfunction?
VERIFY TROUBLESHOOTING OF DTC
P053A HAS BEEN COMPLETED
Verify that all disconnected connectors
reconnected.
Clear the DTC from the PCM memory
10
using the M-MDS.
Perform the "KOEO or KOER self-test"
using the M-MDS. (See KOEO/KOER
SELF TEST [MZI-3.7].)
Is the PENDING CODE for the DTC
present?
VERIFY AFTER REPAIR PROCEDURE
Perform the "AFTER REPAIR
11
PROCEDURE". (See AFTER REPAIR
PROCEDURE [MZI-3.7].)
Are any DTCs present?
DTC P0579 [MZI-3.7]
DTC P0579 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P0579
DETECTION
2008 Mazda CX-9 Grand Touring
Cruise control multi-function input circuit range/performance
P0579 may set when the cruise control switch circuits are open, shorted to
Replace the malfunctioning part, then go to
Yes
the next step.
No Go to the next step.
Replace the PCM, then go to the next step.
Yes (See PCM REMOVAL/INSTALLATION
[MZI-3.7] .)
No Go to the next step.
Go to the applicable DTC inspection. (See
Yes
DTC TABLE [MZI-3.7].)
No Troubleshooting completed.