Mazda CX-9 Grand Touring 2009 Manual page 1358

DIAGNOSTIC PROCEDURE
NO.15 EMISSION COMPLIANCE (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
Inspect for the following:
Vacuum lines for leakage or
blockage
Electrical connections
Proper maintenance schedule
followed
1
Intake-air system and air
cleaner element concerns:
obstructions, leakage or
dirtiness
Are all items normal?
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
2 position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Is any other driveability concern
3
present?
Connect the M-MDS to the DLC-2.
Access ECT PID.
Warm up the engine and idle it.
4 Verify ECT PID is correct.
(See PCM INSPECTION [MZI-
3.7] .)
Is ECT PID correct?
Inspect fuel-filler cap.
5
(See FUEL-FILLER CAP
INSPECTION [MZI-3.7] .)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
(See AFTER SERVICE PRECAUTION [MZI-3.7] .)
CAUTION:
Disconnecting/connecting quick release connector without cleaning it
may cause damage to fuel pipe and quick release connector. Always
clean quick release connector joint area before
disconnecting/connecting, and make sure that it is free of foreign
material.
RESULTS
Yes
No
Yes
No
Yes
No
Yes
No
Yes
ACTION
Go to the next step.
Service if necessary.
Repeat Step 1.
DTC is displayed:
Go to appropriate DTC inspection.
(See DTC TABLE [MZI-3.7] .)
No DTC is displayed:
Go to the next step.
Go to appropriate symptom troubleshooting.
Go to the next step.
Go to the next step.
Inspect for coolant leakage, cooling fan and
condenser fan operation or thermostat operation.
Replace the fuel-filler cap.