DTC P0111 [MZI-3.7]
DTC P0111 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P0111 (MZI-3.7) DIAGNOSTIC PROCEDURE
10
z
Clear DTC from memory using M-
MDS.
z
Start the engine.
z
Perform the "KOEO/KOER self-
test" (See
AFTER REPAIR
PROCEDURE [MZI-3.7]
.)
z
Is same DTC present?
3.7]
.)
No
Go to next step.
11
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0111
IAT sensor circuit range/performance
DETECTION
CONDITION
z
Indicates the IAT rationality test has failed. This DTC indicates that the IAT
value is higher than a calibrated value and could prevent 1 or more on-board
diagnostic (OBD) monitors from completing. The PCM runs this logic after an
engine off and a calibrated soak period (typically 6 hours) This soak period
allows IAT and CHT to stabilize and not differ by more than a calibrated value.
DTC P0111 is set when: the IAT at engine start exceeds the CHT by more than a
calibrated value, typically 17°C {30°F}.
POSSIBLE
CAUSE
z
IAT 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
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, 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 62
© 2005 Mitchell Repair Information Company, LLC.
