the intake-air system.
z
Is there any malfunction?
No
Go to the next step.
8
VERIFY CURRENT INPUT SIGNAL
STATUS OF MAF SENSOR
z
Connect the M-MDS to the DLC-
2.
z
Start the engine.
z
Access the MAF PID.
z
Verify that the MAF PID changes
quickly according to the engine
speed.
z
Is the PID normal?
Yes
Go to the next step.
No
Replace the MAF/IAT sensor, then go to
Step 13.
9
INSPECT FRONT HO2S
z
Inspect the front HO2S (RH) (with
DTC P2195) or the front HO2S
(LH) (with DTC P2197).
(see
FRONT HEATED
OXYGEN SENSOR (HO2S)
INSPECTION [MZI-3.5].
)
z
Is there any malfunction?
Yes
Inspect the related wiring harnesses.
If there is no malfunction, replace the
HO2S.
Then go to Step 13.
No
Go to the next step.
10
INSPECT FUEL INJECTOR
z
Inspect the fuel injector for the
right bank (with DTC P2195) or
the left bank (with DTC P2197).
(see
FUEL INJECTOR
INSPECTION [MZI-3.5]
.)
z
Is there any malfunction?
Yes
Replace the suspected fuel injector, then
go to Step 13.
(see
FUEL INJECTOR
REMOVAL/INSTALLATION [MZI-
3.5]
.)
No
Go to the next step.
11
INSPECT FUEL LINE PRESSURE
z
Perform the "FUEL LINE
PRESSURE INSPECTION".
(see
FUEL LINE PRESSURE
INSPECTION [MZI-3.5]
.)
z
Is there any malfunction?
Yes
Go to the next step.
No
Go to Step 13.
12
INSPECT FUEL SYSTEM FOR
FUEL LEAKAGE
Yes
Repair or replace the malfunctioning part,
then go to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:39 AM
Page 449
© 2005 Mitchell Repair Information Company, LLC.
