INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or on-line repair information
availability.
z
Is any related Service Bulletins
available?
the available Service Bulletins.
z
If the vehicle is not repaired, go to
the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE
OR STORED DTCs
z
Turn the ignition switch off then to
the ON position (Engine off).
z
Verify related pending code or
stored DTCs.
z
Are other DTCs present?
Yes Go to the appropriate DTC
troubleshooting.
(See
DTC TABLE [MZI-3.5]
.)
No
Go to the next step.
4
VERIFY CURRENT INPUT SIGNAL
STATUS (KEY TO ON/IDLE)
z
Access APP1, APP2, APP3, ECT,
IAT, MAF, RPM TP_REL and VSS
PIDs using the M-MDS.
(see
PCM INSPECTION [MZI-
3.5]
.)
z
Is there any signal that is far out of
specification when the ignition
switch is in the ON position and the
engine runs at idle?
Yes Inspect the suspected circuit or part or both
according to inspection results. Then go to
Step 13.
(see
PCM INSPECTION [MZI-3.5]
.)
No
Go to the next step.
5
VERIFY CURRENT INPUT SIGNAL
STATUS UNDER TROUBLE
CONDITION
z
Inspect the same PIDs as in Step 4
when simulating the FREEZE
FRAME DATA condition.
z
Is there any signal which causes
drastic changes?
Yes Inspect the suspected circuit or part or both
according inspection results. Then go to
Step 13.
(see
PCM INSPECTION [MZI-3.5]
.)
No
Go to the next step.
6
INSPECT SPARK PLUG CONDITION
z
Turn the ignition switch off.
z
Remove the spark plug from the
suspected cylinder.
z
Check the sparkplug condition:
Yes
z
If the spark plug is wet, fuel flooding
is suspected. Go to Step 9.
z
If the spark plug has a crack, excess
wear or improper gap, replace the
malfunctioning spark plug. Then go
to Step 13.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:31 AM
Page 167
© 2005 Mitchell Repair Information Company, LLC.