LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Controls Self-Diagnostics - 6.5L) >> Diagnostic Tests >> DTC P1218: Injection Pump Calibration Circuit >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  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. Are there any other DTCs set? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no, go to next step.
  3. Check the connection at the fuel solenoid driver. Clear the DTC and cycle the ignition. Start the engine and allow the engine to idle. Activate the Time Set procedure. The diagnostic will only run when a Time Set procedure is performed. Exit out of the Time Set procedure. Select DTC and the Specific DTC function. Enter the DTC number that was set. Does the scan tool indicate that this diagnostic ran and passed? If yes, go to step  5 . If no, go to next step.
    4. NOTE: The new injection pump must be timed. See appropriate ON-VEHICLE ADJUSTMENTS article.
  4. Replace the fuel injection pump. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. After repairs, go to step  6 .
  5. The DTC is intermittent. If no additional DTCs are stored, see DIAGNOSTIC AIDS  . If additional DTCs were stored, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  6. 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 .
  7. 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.
scientia non olet · About LEMON Manuals