Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 1: The Diagnostic System Check - Vehicle prompts the technician to complete some basic checks and store the Freeze Frame data on the scan tool, if applicable. This creates an electronic copy of the data taken when the fault occurred. The information is then stored in the scan tool for later reference.
- 2: This step checks for a low voltage on the input circuit. If the scan tool reads 140°C (284°F), the input circuit is shorted to ground.
- 3: This step determines if DTC P0112 is the result of a hard failure or an intermittent condition.
DTC P0112
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Select the IAT sensor parameter on the scan tool. Is the IAT sensor value more than or equal to the specified value? |
140°C (284°F) | Go to Step 4 | Go to Step 3 |
| 3 |
|
- | Go to Diagnostic Aids | Go to Step 4 |
| 4 |
|
-40°C (-40°F) | Go to Step 6 | Go to Step 5 |
| 5 |
|
- | Go to Step 8 | Go to Step 7 |
| 6 | Replace the MAF sensor. Refer to Intake Air Temperature Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 8 | - |
| 7 | Replace the powertrain control module (PCM). Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 8 | - |
| 8 |
|
- | Go to Step 9 | Go to Step 2 |
| 9 | With a scan tool, observe the stored information, Capture Info. Does the scan tool display any DTCs that you have not diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |