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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, 2002 Ford Excursion, and 2002 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Retrieve all DTCs stored in RCM memory by executing RETRIEVE/CLEAR CONTINUOUS DTCs. See RETRIEVING FAULT CODES .
  2. Run on-demand self-test to determine what DTCs are currently being sensed by RCM. See ON-DEMAND SELF-TEST .
  3. If stored DTCs are different than current DTCs, always repair current DTCs first.
  4. If different continuous DTCs are displayed from memory than on-demand self-test, repair on-demand self-test codes first then repair continuous codes.
  5. If no DTCs are retrieved and symptoms are observed, refer to diagnostic symptoms table. See DIAGNOSTIC SYMPTOMS  table.
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