DTC P0112 [MZI-3.7]
DTC P0112 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
available?
No
Go to the next step.
3
INSPECT IAT SENSOR
z
Inspect IAT sensor. (See
INTAKE-
AIR SYSTEM
REMOVAL/INSTALLATION
[MZI-3.7]
.)
z
Is IAT sensor normal?
Yes Go to the next step.
No
Replace MAF/IAT sensor, then go to the next
step. (See
MASS AIR FLOW
(MAF)/INTAKE AIR TEMPERATURE
(IAT) SENSOR
REMOVAL/INSTALLATION [MZI-3.7]
.)
4
VERIFY TROUBLESHOOTING OF
DTC P0111 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
reconnected.
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Start engine and run engine under
FREEZE FRAME DATA condition.
z
Is PENDING CODE for this DTC
present?
Yes
Replace PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
No
Go to the next step.
5
VERIFY AFTER REPAIR PROCEDURE
z
Perform "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTC present?
Yes Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0112
IAT sensor circuit low input
DETECTION
CONDITION
z
Indicates that the sensor signal is less than the self-test minimum. The IAT
sensor minimum is
0.2 V or 121°C {250°F}.
POSSIBLE CAUSE
z
Short to ground circuit between MAF/IAT sensor terminal F and PCM terminal
1AF
z
IAT sensor malfunction
z
Connector or terminal malfunction
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 63
© 2005 Mitchell Repair Information Company, LLC.
