DIAGNOSTIC PROCEDURE
NO.15 EMISSION COMPLIANCE (MZI-3.7) DIAGNOSTIC PROCEDURE
(See AFTER SERVICE PRECAUTION [MZI-3.7] .)
CAUTION:
z
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.
STEP
INSPECTION
RESULTS
ACTION
1
Inspect for the following:
z
Vacuum lines for leakage or
blockage
z
Electrical connections
z
Proper maintenance schedule
followed
z
Intake-air system and air
cleaner element concerns:
obstructions, leakage or
dirtiness
Are all items normal?
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 1.
2
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON
position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Yes
DTC is displayed:
Go to appropriate DTC inspection.
(See
DTC TABLE [MZI-3.7]
.)
No
No DTC is displayed:
Go to the next step.
3
Is any other driveability concern
present?
Yes
Go to appropriate symptom troubleshooting.
No
Go to the next step.
4
Connect the M-MDS to the DLC-2.
Access ECT PID.
Warm up the engine and idle it.
Verify ECT PID is correct.
(See
PCM INSPECTION [MZI-
3.7]
.)
Is ECT PID correct?
Yes
Go to the next step.
No
Inspect for coolant leakage, cooling fan and
condenser fan operation or thermostat operation.
5
Inspect fuel-filler cap.
(See
FUEL-FILLER CAP
INSPECTION [MZI-3.7]
.)
Yes
Replace the fuel-filler cap.
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM
Page 67
© 2005 Mitchell Repair Information Company, LLC.
