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Home >> Dodge and Ram >> 2002 >> Durango Base, 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - JTEC >> Verification Tests >> Fuel System/Misfire Monitor Verification Test

Fuel System/Misfire Monitor Verification Test

NOTE: For component location, see COMPONENT LOCATIONS . For connector terminal identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see appropriate WIRING DIAGRAMS article.
  1. If any existing DTCs have not been repaired, perform appropriate DTC test and finish diagnosing remaining DTCs as necessary. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  2. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.
  3. Connect the DRBIII® to the Data Link Connector (DLC).
  4. Ensure the Fuel Tank is at least 1/4 full. Turn off all accessories.
  5. If the PCM was not replaced, go to step  8. If PCM was replaced, go to next step.
  6. If the PCM was replaced, the correct Vehicle Identification Number (VIN) and mileage must be programmed or a DTC will set in the Controller Anti-Lock Brake (CAB) and Air Bag Control Modules (ACM). See POWERTRAIN CONTROL MODULE  under PROGRAMMING. In addition, if the vehicle is equipped with Sentry Key Immobilizer Module (SKIM), secret key data must be updated to enable start. See SENTRY KEY IMMOBILIZER MODULE  under PROGRAMMING.
  7. For SKIM theft alarm, connect DRBIII® to DLC. Go to Theft Alarm, SKIM, Misc and place SKIM in Secured Access Mode by using the appropriate Personal Identification Number (PIN) code for this vehicle. Select Update The Secret Key Data. Data will be transferred from SKIM to PCM.
    8. NOTE: Low fuel level or an un-learned Adaptive Numerator can disable the Misfire Monitor.
  8. Ensure that misfire detection is enabled if a misfire DTC was repaired.
  9. If the PCM has been replaced or disconnected during testing, the Adaptive Numerator must be re-learned in order for the Misfire Monitor to run.
  10. With the DRB III®, monitor the Similar Conditions to attempt to duplicate the conditions that the vehicle was operating at when the DTC was set.
  11. If the conditions cannot be duplicated with the DRBIII®, erase DTCs. With the DRBIII®, read DTCs. Are any DTCs or symptoms remaining? If yes, check for any related Technical Service Bulletin (TSB) and/or perform appropriate DTC test and finish diagnosing remaining DTCs as necessary. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, repair is complete.
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