z
Has FREEZE FRAME DATA
been recorded?
No
Record FREEZE FRAME DATA on the
repair order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or on-line repair information
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to
the available Service Bulletins.
z
If the vehicle is not repaired, go to
the next step.
No
Go to the next step.
3
INSPECT MAF SENSOR
CONNECTOR FOR POOR
CONNECTION
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor
connector.
z
Inspect for poor connection (such
as damaged/pulled-out pins,
corrosion).
z
Are there any malfunction?
Yes
Repair or replace suspected part, then go to
Step 7.
No
Go to the next step.
4
INSPECT MAF SIGNAL CIRCUIT
FOR SHORT TO POWER SUPPLY
z
Turn the ignition switch to the ON
position (Engine off).
z
Measure voltage between MAF
sensor terminal D (wiring harness-
side) and body ground.
z
Is voltage B+?
No
Repair or replace suspected part, then go to
Step 7.
Yes
Go to the next step.
5
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Turn the ignition switch off.
z
Disconnect PCM connector.
z
Inspect for poor connection (such
as damaged/pulled-out pins,
corrosion).
z
Are there any malfunction?
No
Repair or replace suspected part, then go to
Step 7.
Yes
Go to the next step.
6
INSPECT THE MAF SENSOR
z
Inspect the MAF sensor.
Yes
Replace the MAF/IAT sensor (see
MASS
AIR FLOW (MAF)/INTAKE AIR
TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION [MZI-
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:29 AM
Page 56
© 2005 Mitchell Repair Information Company, LLC.