DTC P0112:00 [MZI-3.7]
id0102d2701400
|
DTC P0112:00 |
IAT sensor circuit low input |
|---|---|
|
DETECTION CONDITION
|
• 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
|
• IAT sensor malfunction
• Connector or terminal malfunction
• Short to ground circuit between MAF/IAT sensor terminal F and PCM terminal 1P
|
 |
|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• 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 SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
|
Yes
|
Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
3
|
INSPECT IAT SENSOR TERMINAL
• Turn the ignition switch off.
• Disconnect MAF/IAT sensor connector.
• Inspect for bent terminal of MAF/IAT sensor terminals E and F (part-side).
• Is there any malfunction?
|
Yes
|
Repair or replace suspected part, then go to Step 6.
|
|
No
|
Go to the next step.
|
||
|
4
|
CLASSIFY IAT SENSOR MALFUNCTION OR HARNESS MALFUNCTION
• Connect M–MDS to DLC-2.
• Access IAT PID.
• Verify IAT value when disconnecting MAF/IAT sensor connector.
• Does IAT value change?
|
Yes
|
Replace MAF/IAT sensor or harness, then go to Step 6.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT IAT SIGNAL CIRCUIT FOR SHORT TO GROUND
• MAF/IAT sensor connector is disconnected.
• Turn the ignition switch off.
• Disconnect PCM connector.
• Inspect continuity between MAF/IAT sensor terminal F (wiring harness-side) and body ground.
• Is there continuity?
|
Yes
|
Repair or replace suspected part, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
6
|
VERIFY TROUBLESHOOTING OF DTC P0112:00 HAS BEEN COMPLETED
• Verify that all disconnected connectors reconnected.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the M-MDS.
• Start engine and warm it up completely.
• Is same DTC present?
|
Yes
|
Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
|
|
No
|
Go to the next step.
|
||
|
7
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
(See DTC TABLE [MZI-3.7].)
|
|
No
|
Troubleshooting completed.
|
||