Mazda CX-9 Grand Touring 2009 Manual page 1283

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
2
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
VERIFY RELATED PENDING CODE
OR STORED DTCs
Turn the ignition switch off then to
3
the ON position (Engine off).
Verify the related PENDING
CODE or stored DTCs using the M-
MDS.
IDENTIFY TRIGGER DTC FOR
FREEZE FRAME DATA
4
Is DTC P2271 or P2273 on
FREEZE FRAME DATA?
INSPECT REAR HO2S
For DTC P2271 Inspect the rear
HO2S(RH)
For DTC P2273 Inspect the rear
HO2S(LH)
5
(See REAR HEATED OXYGEN
SENSOR (HO2S) INSPECTION
[MZI-3.7] .)
Is there any malfunction?
VERIFY TROUBLESHOOTING OF
DTC P2271, P2273 HAS BEEN
COMPLETED
Verify that all disconnected
connectors are reconnected.
6
Turn the ignition switch to the ON
position (Engine off).
Clear the DTC from the PCM
memory using the M-MDS.
Perform no load racing at the engine
speed of 2,500-3,500 rpm for 60s or
2008 Mazda CX-9 Grand Touring
Perform repair or diagnosis according to the
available Service Bulletins.
Yes
If the vehicle is not repaired, go to the next
step.
Perform the PCM reprogramming procedure. (See
No PCM CONFIGURATION [MZI-3.7] .)
Go to the appropriate DTC troubleshooting. (See
Yes
DTC TABLE [MZI-3.7].)
No
Yes Go to the next step.
Go to the troubleshooting for the DTC on the
No FREEZE FRAME DATA. (See DTC TABLE
Inspect the related wiring harnesses.
If there is no malfunction, replace the HO2S. (See
Yes
REAR HEATED OXYGEN SENSOR (HO2S)
REMOVAL/INSTALLATION [MZI-3.7] .)
No
Replace the PCM, then go to the next step. (See
Yes PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
Then go to the next step.
Go to the next step.
[MZI-3.7].)
Go to the next step.