Circuit Description
The fuel injection pump delivers fuel to individual cylinders by opening and closing a fuel solenoid control valve. The powertrain control module (PCM) monitors the amount of time needed 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 Setting the DTC
| • | The battery voltage is greater than 12 volts and less than 15 volts. |
| • | The engine coolant temperature (ECT) is greater than 50°C (122°F). |
| • | The engine speed is greater than 1,350 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 control module stores the DTC information into memory when the diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records. |
| • | The driver information center, if equipped, may display a message. |
Conditions for Clearing the DTC
| • | A current DTC Last Test Failed clears when the diagnostic runs and passes. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic. |
| • | Clear the DTC with a scan tool. |
Diagnostic Aids
A weak fuel solenoid mechanical failure 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. Fuel contamination could also cause this DTC.
Test Description
The numbers below refer to the step numbers 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 at fault, or if there is a problem with the PCM or wiring.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Engine Controls Schematics | ||||
1 | Did you perform the Diagnostic System Check-Engine Controls? | -- | Go to Step 2 | |
2 | Is DTC P0370 set? | -- | Go to DTC P0370 | Go to Step 3 |
Does the scan tool display more than the specified value? | 2.4 ms | Go to Step 4 | Go to Step 5 | |
4 |
Does the voltage measure between specified value? | 12-15 V | Go to Step 7 | Go to Step 6 |
5 | The DTC is intermittent. If no additional DTCs are stored, refer to Diagnostic Aids. If additional DTCs were stored refer to those DTC tables first. Are any additional DTCs stored? | -- | Go to Diagnostic Aids | |
|
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. Repair the fuel solenoid driver ignition positive voltage circuit connections or aftermarket add-ons. Did you complete the repair? | -- | Go to Step 8 | -- | |
7 |
Important: Before replacing the fuel Injection pump, check for fuel system contamination. Refer to Contaminants-in-Fuel Diagnosis . Important: The new fuel injection pump must be timed. Refer to Fuel Injection Pump Timing Adjustment . Replace the fuel Injection pump. Refer to Fuel Injection Pump Replacement . Did you compete the replacement? | -- | Go to Step 8 | -- |
8 |
Does the DTC run and pass? | -- | 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? | -- | System OK | |
