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Diagnostic Procedures

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  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM.
  2. Is the DTC P0219 also set? If yes, see DTC P0219: ENGINE OVERSPEED CONDITION  . If no, go to next step.
  3. Does the engine start? If yes, go to next step. If no, go to step  7 .
  4. Allow the engine to idle until the engine reaches the normal operating temperature. Observe the Inj. Pump Closure Time on the scan tool. Is the scan tool display less than or equal to 0.75 ms? If yes, go to next step. If no, go to step  6 .
  5. With the engine running, again observe the Inj. Pump Closure Time on the scan tool. Is the Inj. Pump Closure Time display less than or equal to 0.1 ms? If yes, go to step  8 . If no, go to step  10 .
  6. The DTC is intermittent. If no additional DTCs are stored, see DIAGNOSTIC AIDS  . If any additional DTCs are stored, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  7. Check the closure ground circuit for an open. If the closure ground circuit is open, repair as necessary. Did you perform a repair? If yes, go to step  12 . If no, go to step  10 .
  8. Check the closure signal circuit for the following conditions:
    • An open.
    • A short to voltage.
    • A short to ground.

    Inspect the connections at the driver. If a problem is found, repair the problem as necessary. Did you perform a repair? If yes, go to step  12 . If no, go to next step.

  9. Check the closure signal circuit for a poor connection at the PCM and replace the terminal if necessary. Did you perform a repair? If yes, go to step  12 . If no, go to step  11 .
    10. NOTE: The new injection pump must be timed. See appropriate ON-VEHICLE ADJUSTMENTS article.
  10. Replace the fuel injection pump. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. After repairs, go to step  12 .
  11. Replace the PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. Reprogram PCM. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After repairs, go to next step.
  12. Using the scan tool, clear the DTCs. Start engine and idle the engine at the normal operating temperature. Select DTC and the Specific DTC function. Enter the DTC number that was set. Operate the vehicle within the Conditions for Setting DTC until the scan tool indicates the diagnostic ran. Does the scan tool indicate the diagnostic passed? If yes, go to next step. If no, go to step  2 .
  13. Observe the stored information, Capture Info with a scan tool. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no, system is okay.
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