1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to next step.
No
Record FREEZE FRAME DATA on the
repair order, then go to next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to
available Service Bulletins.
z
If vehicle is not repaired, go to next
step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE OR
STORED DTC
z
Verify the related PENDING CODE or
stored DTCs.
z
Are other DTCs present?
Yes
Go to appropriate DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Go to the next step.
4
INSPECT MAF SIGNAL SENT TO PCM
z
Turn the ignition switch to the ON
position (Engine running).
z
Access MAF PID using the M-MDS
z
Is the voltage between 0.46-2.44 V
Yes
Perform the "INTERMITTENT CONCERN
TROUBLESHOOTING". Then go to Step 10.
No
Go to the next step.
5
INSPECT MAF SENSOR AND PCM
CONNECTOR FOR POOR
CONNECTION
z
Turn the ignition switch off.
z
Disconnect the MAF/IAT sensor and
PCM 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 10.
No
Go to the next step.
6
INSPECT MAF SENSOR GROUND
CIRCUIT FOR OPEN CIRCUIT
z
Turn the ignition switch off.
z
Inspect continuity between MAF sensor
terminal B (wiring harness-side) and
body ground.
z
Is there continuity?
Yes Go to the next step.
No
Repair or replace suspected part, then go to
Step 10.
INSPECT MAF SENSOR SIGNAL
CIRCUIT FOR OPEN CIRCUIT
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:40 AM
Page 314
© 2005 Mitchell Repair Information Company, LLC.
