Circuit Description
The injection pump delivers fuel to individual cylinders by opening
and closing a solenoid control fuel valve. The PCM monitors the amount of
time it takes for the fuel solenoid valve to physically close after
commanded to close. Closure time out of range is seen as a fault. This
response time is measured in milliseconds.
Conditions for Running the DTC
| • | The battery voltage greater than 12 volts and less than
15 volts. |
| • | The engine coolant temperature is greater than 50°C (122°F). |
| • | The engine speed greater than 1350 RPM. |
| • | The requested fuel rate is greater than 0.0 mm |
Conditions for Setting the DTC
The closure time is greater than 2.46 ms.
Action Taken When the DTC Sets
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The PCM records the operating conditions at the time the diagnostic
fails. This information stores in the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | A History DTC clears after forty consecutive warm-up cycles, if
this or any other emission related diagnostic does not report any failures. |
Diagnostic Aids
A weak (mechanical failure) fuel solenoid will result in a DTC P1217.
If DTC P1217 is set with any other DTCs, diagnose them first. If the vehicle
is running close to the DTC setting closure time, vehicle should be
checked during cold start ups and during hot conditions.
Poor performance and starting conditions will exist. Fuel contamination
could also cause this DTC.
