Circuit Description
The injection pump delivers fuel to the 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 it is commanded to close. When the closure time falls outside of the specified range, a fault sets. The response time is measured in milliseconds.
Conditions for Setting the DTC
| • | The battery voltage is greater than 10 volts and less than 16 volts. |
| • | The engine coolant temperature is greater than -1°C (34°F). |
| • | The ENGINE SPEED is greater than 506 RPM. |
| • | The requested fuel rate is greater than 0.0 mm |
| • | The closure time is greater than 2.5 ms. |
Action Taken When the DTC Sets
| • | The PCM will not illuminate the Malfunction Indicator Lamp (MIL). |
| • | 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 will clear after forty consecutive warm-up cycles during which the diagnostic does not fail (the coolant temperature has risen 22°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
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, the vehicle should be checked during cold start ups and during hot conditions.
Poor performance and starting conditions will exist.
Test Description
The number(s) below refer to the step number(s) on the Diagnostic Table.
-
This step determines if DTC P1217 is a hard failure or an intermittent.
-
This step will determine if the solenoid is malfunctioning, or if there is a problem with the PCM or wiring.
Step | Action | Value(s) | Yes | No |
1 |
Important: Before clearing any DTCs, use the Scan Tool Capture Info to save freeze frame and failure records for reference, as the Scan Tool loses data when using the Clear Info function. Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | ||
2 | Is the DTC P0370 also set? | -- | Go to DTC P0370 Timing Reference High Resolution System Performance | |
Is the Scan Tool display greater than the specified value? | 2.4 ms | |||
4 |
Is the voltage between the specified value? | 11-16V | ||
5 | The DTC is intermittent. If no additional DTCs are stored, refer to Diagnostic Aids. If the additional DTCs were stored, refer to those DTC table(s) first. Are the additional DTCs stored? | -- | Go to the Applicable DTC Table | Go to Diagnostic Aids |
Repair the fuel solenoid driver ignition feed circuit poor connections or aftermarket add-ons. Refer to Notice: Connect any add-on electrically operated equipment to the vehicle's electrical system at the battery (power and ground) in order to prevent damage to the vehicle. .Is the action complete? | -- | -- | ||
7 |
Important: Before replacing the Injection pump, check the fuel system for contamination. Refer to Contamination Testing . Replace the fuel injection pump. Refer to Fuel Injection Pump Replacement . Imp: The new injection pump must be timed. Refer to Injection Timing Adjustment . Is the action complete? | -- | -- | |
8 |
Does the Scan Tool indicate the diagnostic Passed? | -- | ||
9 | Does the Scan Tool display any additional undiagnosed DTCs? | -- | Go to the Applicable DTC Table | System OK |
