Mazda CX-9 Grand Touring 2009 Manual page 1075

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Disconnect PCM connector.
Inspect for poor connection (such as
7
damaged/pulled-out pins,
corrosion).
Is there any malfunction?
INSPECT CV SOLENOID VALVE
CONTROL CIRCUIT FOR OPEN
CIRCUIT
Turn the ignition switch off.
8
Inspect continuity between CV
solenoid valve terminal B and PCM
terminal 1Z.
Is there continuity?
INSPECT CV SOLENOID VALVE
Inspect the CV solenoid valve. (See
CHARCOAL CANISTER,
CANISTER VENT (CV)
9
SOLENOID VALVE, AIR
FILTER COMPONENT
INSPECTION [MZI-3.7] .)
Is there any malfunction?
VERIFY TROUBLESHOOTING OF
DTC P0446 COMPLETED
Make sure to reconnect all
disconnected connectors.
Clear DTC from PCM memory
using M-MDS.
10
Perform the "KOEO or KOER self-
test" using the M-MDS. (See
KOEO/KOER SELF TEST
[MZI-3.7].)
Is the PENDING CODE same DTC
present?
VERIFY AFTER REPAIR
PROCEDURE
Perform the "AFTER REPAIR
11
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-
3.7].)
Are any DTCs present?
2008 Mazda CX-9 Grand Touring
No
Yes Go to the next step.
Repair or replace suspected part, then go to the
No
Replace CV solenoid valve (See CHARCOAL
CANISTER, CANISTER VENT (CV)
Yes SOLENOID VALVE, AIR FILTER
COMPONENT REMOVAL/INSTALLATION
[MZI-3.7] .), then go to Step 10.
No
Replace PCM, then go to the next step. (See PCM
Yes
REMOVAL/INSTALLATION [MZI-3.7] .)
No
Go to the applicable DTC inspection. (See DTC
Yes
TABLE [MZI-3.7].)
No
Go to the next step.
Step 10.
Go to the next step.
Go to the next step.
Troubleshooting completed.