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HOMESERVICE MANUALSJEEP1999WRANGLER SPORT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1 (COMPUTER RELEARN PROCEDURES)COMPUTER RELEARN PROCEDURESALL MODELSVEHICLE DRIVEABILITY COMPUTER RELEARN PROCEDURE
1999 Jeep Wrangler Sport, Standard

Vehicle Driveability Computer Relearn Procedure

1999 Jeep Wrangler Sport, StandardSECTION Vehicle Driveability Computer Relearn Procedure
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1998 Plymouth Voyager, 1998 Plymouth Neon, 1998 Plymouth Grand Voyager, 1998 Plymouth Breeze, and 1998 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

Manufacturer does not provide a specified computer relearn procedure for obtaining proper driveability. If vehicle battery was disconnected or Powertrain Control Module (PCM) was replaced, driving the vehicle will enable the PCM to perform a computer relearn procedure for obtaining proper driveability. Inform customer that driveability may differ from what they are accustomed to until the PCM completes the computer relearn procedure.

NOTE: If Powertrain Control Module (PCM) was replaced, the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into the PCM to prevent Diagnostic Trouble Codes (DTCs) from being set in the Anti-Lock Brake System (ABS) module and Supplemental Restraint System (SRS) module. To program PCM and clear DTCs from ABS and SRS modules, proceed to appropriate procedure listed. If replacing Powertrain Control Module (PCM) on models equipped with a Smart Key Immobilizer Module (SKIM), the secret key data must also be updated to enable engine starting. To update secret key data, proceed to appropriate procedure listed.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.