Mazda CX-9 Grand Touring 2009 Manual page 1178

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