GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 DTC P1217 Fuel Solenoid Response Time Too Long

Object Number: 426020 Size: LF
Engine Controls Components
Cell 22: Fuel Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice

Circuit Description

The injection pump delivers fuel to the individual cylinders by opening and closing a solenoid control fuel valve. The powertrain control module (PCM) monitors the amount of time it takes for the fuel solenoid valve to physically close after commanded to close. Any closure time that is out of range is seen as a fault. This response time is measured in milliseconds.

Condition for Running 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

Conditions for Setting the DTC

The closure time is greater than 2.5 milliseconds.

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 is stored in the Failure Records.

Conditions for Clearing the MIL/DTC
    • The PCM will turn the MIL off after 3 consecutive trips without a fault condition.
    • A history DTC clears after 40 consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures.
    • The scan tool Clear Info function was used.

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.

  1. This step determines if DTC P1217 is a hard failure or an intermittent.

    2.

  2. 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 the DTCs, use the scan tool Capture Info function to save the Freeze Frame and the Failure records for reference. The control module's data is deleted once the Clear Info function is used.

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

--

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

2

Is the DTC P0370 also set?

--

Go to DTC P0370 Timing Reference High Resolution System Performance

Go to Step 3

3

  1. Start the engine.
  2. Allow the engine to idle at the normal operating temperature.
  3. Observe the Inj. Pump Sol. Closure Time display on the scan tool.

Is the scan tool display greater than the specified value?

2.4 ms

Go to Step 4

Go to Step 5

4
  1. Turn all of the accessories ON, including any aftermarket add-ons.
  2. Allow the engine to idle.
  3. Complete all of the post glow plug cycles.
  4. With a J 39200 digital multimeter (DMM) connected to ground, measure the voltage at the fuel solenoid driver ignition feed circuit in the U/H relay center.

Is the voltage between the specified values?

11-16V

Go to Step 7

Go to Step 6

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 additional DTCs stored?

--

Go to the applicable DTC Table

Go to Diagnostic Aids

6

  1. Repair the fuel solenoid driver ignition feed circuit poor connections. Refer to Wiring Repairs .
  2. Repair any 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?

--

Go to Step 8

--

7

Important: Before replacing the fuel injection pump, check the fuel system for contamination. Refer to Contamination Testing .

Replace the fuel injection pump. Refer to Fuel Injection Pump Replacement .

Is the action complete?

--

Go to Step 8

--

8
  1. Using the scan tool, clear the DTCs.
  2. Start engine.
  3. Allow the engine to idle until the engine reaches the normal operating temperature.
  4. Select DTC and the Specific DTC function.
  5. Enter the DTC number that was set.
  6. Operate the vehicle within the Conditions for Setting this DTC until the scan tool indicates the diagnostic Ran.

Does the scan tool indicate the diagnostic Passed?

--

Go to Step 9

Go to Step 2

9

Does the scan tool display any additional undiagnosed DTCs?

--

Go to the Applicable DTC Table

System OK