The injection pump fuel supply line has a solenoid controlled shutoff located in the injection pump. When the solenoid is energized (key in the run position), the valve is open and fuel is supplied to the injection pump. By providing a ground path, the PCM energizes the solenoid.
The ignition switch in the ON position or the engine is operating.
• | The PCM has requested the ESO ON and the control circuit voltage at the PCM is more than 8 volts. |
• | All of the diagnostic set conditions met for 2 seconds. |
or
• | The PCM has requested the ESO OFF and the control circuit voltage at the PCM is less than 8 volts. |
• | All of the diagnostic set conditions met for 2 seconds. |
• | The PCM will not illuminate the malfunction indicator lamp (MIL). |
• | The PCM records the operating conditions at the time the diagnostic fails. This information will store in the Failure Records. |
• | A History DTC clears after forty consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures |
• | The use of a scan tool. |
An open in the control circuit or the ignition feed circuit will cause a P0215. Also a no start condition will exist. The scan tool has the ability to turn the engine shutoff solenoid ON and OFF. This can be used as a quick operational check.
An intermittent may be caused by any of the following conditions:
• | A poor connection |
• | Rubbed through wire insulation |
• | A broken wire inside the insulation |
Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Wiring Systems.
Number(s) below refer to the step number(s) on the Diagnostic Table.
This step will check the ESO control circuit for an open.
After repairing the circuit for a short to voltage, check the solenoid for proper operation.
Step | Action | Value(s) | Yes | No | ||||
---|---|---|---|---|---|---|---|---|
1 |
Important: Before clearing the DTCs, use the scan tool Capture Info to save the Freeze Frame and 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? | -- | ||||||
2 |
Is the test light ON? | -- | ||||||
Is the test light ON? | -- | |||||||
4 |
Does the test light turn ON and OFF with each command? | -- | ||||||
5 | Check the ESO harness for a proper connection and replace the terminals if necessary. Refer to Wiring Repairs in Wiring Systems. Did any terminal require replacement? | -- | ||||||
6 |
Is the action complete? | -- | -- | |||||
7 |
Is the test light ON? | -- | ||||||
8 | Repair the short to ground on the ESO control circuit. Refer to Wiring Repairs in Wiring Systems. Is the action complete? | -- | -- | |||||
9 |
Is the action complete? | -- | ||||||
Is the action complete? | -- | |||||||
11 |
Important: The new injection pump must be timed. Refer to Fuel Injection Pump Timing Adjustment . Replace the injection pump. Refer to Fuel Injection Pump Replacement . Is the action complete? | -- | -- | |||||
12 |
Important: The new PCM must be programmed. Refer to Powertrain Control Module Replacement/Programming . Replace the PCM. Is the action complete? | -- | -- | |||||
13 |
Does the scan tool indicate the diagnostic Passed? | -- | ||||||
14 | Does the scan tool display any additional undiagnosed DTCs? | -- | Go to the Applicable DTC Table | System OK |