stored DTCs.
z
Are other DTCs present?
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
engine runs at idle?
Yes
Inspect the suspected circuit or part or both
according to inspection results.
(see
PCM INSPECTION [MZI-3.5]
.)
Then go to Step 18.
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 to inspection results.
(see
PCM INSPECTION [MZI-3.5]
.)
Then go to Step 18.
No
Go to the next step.
6
INSPECT CMP SENSOR
z
Inspect the CMP sensor.
(see
CAMSHAFT POSITION
(CMP) SENSOR INSPECTION
[MZI-3.5].
)
z
Is there any malfunction?
Yes
Inspect the installation condition for damage
to the timing belt and gears, and repair
malfunctioning parts.
z
If it is normal, replace CMP sensor.
(see
CAMSHAFT POSITION
(CMP) SENSOR
REMOVAL/INSTALLATION
[MZI-3.5].
)
Then go to Step 18.
No
Go to the next step.
7
VERIFY CKP SENSOR
INSTALLATION CONDITION
z
Inspect for CKP sensor looseness.
z
Is the CKP sensor loose?
Yes
Retighten the CKP sensor, then go to Step
18.
(see
CRANKSHAFT POSITION (CKP)
SENSOR REMOVAL/INSTALLATION
[MZI-3.5].
)
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 161
© 2005 Mitchell Repair Information Company, LLC.