DIAGNOSTIC PROCEDURE
DTC P0116 (MZI-3.7) DIAGNOSTIC PROCEDURE
POSSIBLE
CAUSE
z
Cooling system malfunction
z
CHT sensor malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the
repair order, then go to the next step.
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.
If the vehicle is not repaired, go to next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE OR
STORED DTC
z
Verify the related PENDING CODE or
stored DTCs.
z
Are other DTCs present?
Yes Go to appropriate DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Go to the next step.
4
INSPECT CHT SENSOR
z
Inspect the CHT sensor. (See
CYLINDER HEAD
TEMPERATURE (CHT) SENSOR
INSPECTION [MZI-3.7]
.)
z
Are there any malfunction?
Yes
Replace the CHT sensor, then go to the next
step.
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF DTC
P0116 HAS BEEN COMPLETED
z
Make sure to reconnect all disconnected
connectors.
z
Clear DTC from memory using M-
MDS.
z
Start the engine.
z
Perform the "KOEO/KOER self-
test" (See
KOEO/KOER SELF TEST
[MZI-3.7]
.)
Yes
Replace the PCM, then go to 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 10:08:35 AM
Page 72
© 2005 Mitchell Repair Information Company, LLC.
