Circuit Description
The PCM has the ability to put the vehicle in an ESO controlled idle if an engine overspeed condition has been detected. This is a type D DTC.
Conditions for Setting the DTC
5 ESO cycles with an RPM drop.
Action Taken When the DTC Sets
ESO controlled idle (the PCM will control RPM by turning the ESO ON and OFF. The RPM will fluctuate from 800 to 1200 when the DTC is set).
Conditions for Clearing the MIL/DTC
| • | A History DTC will clear after forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from the start up coolant temperature and the engine coolant temperature exceeds 71°C (160°F) during that same ignition cycle. |
| • | Use of a Scan tool will clear the DTC codes. |
Diagnostic Aids
This DTC will not set if an external fuel source is causing an overspeed condition. A DTC P1216 will set along with DTC P0219.
Test Description
The number(s) below refer to the step number(s) on the Diagnostic Table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Important: Before clearing the DTC(s), use the scan tool Capture Info in order to record the Freeze Frame and the failure records for reference, as the data will be lost when the Clear Info function is used. Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | ||
2 | Replace the injection pump. Important: If the injection pump is malfunctioning, the new injection pump must be timed. Refer to Checking/Adjust Injection Timing . Is the action complete? | -- | -- | |
3 |
Does the Scan Tool indicate that this diagnostic Passed? | -- | ||
4 | Use the Scan Tool in order to select Capture Info, Review Info. Are there any DTCs displayed that have not been diagnosed? | -- | Go to the Applicable DTC Table | System OK |
