9
DTC P2195) or the front HO2S (LH)
(with DTC P2197).
(See
FRONT HEATED OXYGEN
SENSOR (HO2S) INSPECTION
[MZI-3.7]
.)
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-
3.7]
.)
z
Is there any malfunction?
Yes
Replace the suspected fuel injector, then go to
Step 13. (See
FUEL INJECTOR
REMOVAL/INSTALLATION [MZI-3.7]
.)
No
Go to the next step.
11
INSPECT FUEL LINE PRESSURE
z
Perform the "FUEL LINE PRESSURE
INSPECTION". (See
FUEL LINE
PRESSURE INSPECTION [MZI-
3.7]
.)
z
Is there any malfunction?
Yes Go to the next step.
No
Go to Step 13.
12
INSPECT FUEL SYSTEM FOR FUEL
LEAKAGE
z
Visually inspect for fuel leakage in the
fuel system.
z
Is there fuel leakage?
Yes
Repair or replace the malfunctioning part, then
go to the next step.
No
Replace the fuel pump unit, then go to the next
step. (See
FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-3.7]
.)
13
VERIFY TROUBLESHOOTING OF DTC
P2195, P2197 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
are reconnected.
z
Turn the ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Perform no load racing at the engine
speed of 2,500-3,500 rpm for 60s or
more, then idle the engine for 60s or
more.
z
Perform the KOEO and KOER self-test.
z
Retrieve DTCs using the M-MDS.
Yes
Replace the PCM, then go to the next step.
(See
PCM REMOVAL/INSTALLATION
[MZI-3.7]
.)
No
Go to the next step.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:43 AM
Page 412
© 2005 Mitchell Repair Information Company, LLC.
