2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or on-line repair information
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the next
step.
No
Perform the PCM reprogramming procedure. (See
PCM CONFIGURATION [MZI-3.7]
.)
Then 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 the related PENDING
CODE or stored DTCs using the M-
MDS.
Yes
Go to the appropriate DTC troubleshooting. (See
DTC TABLE [MZI-3.7]
.)
No
Go to the next step.
4
IDENTIFY TRIGGER DTC FOR
FREEZE FRAME DATA
z
Is DTC P2271 or P2273 on
FREEZE FRAME DATA?
Yes Go to the next step.
No
Go to the troubleshooting for the DTC on the
FREEZE FRAME DATA. (See
DTC TABLE
[MZI-3.7]
.)
5
INSPECT REAR HO2S
z
For DTC P2271 Inspect the rear
HO2S(RH)
z
For DTC P2273 Inspect the rear
HO2S(LH)
(See
REAR 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. (See
REAR HEATED OXYGEN SENSOR (HO2S)
REMOVAL/INSTALLATION [MZI-3.7]
.)
No
Go to the next step.
6
VERIFY TROUBLESHOOTING OF
DTC P2271, P2273 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
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
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 419
© 2005 Mitchell Repair Information Company, LLC.
