2001 Plymouth Neon Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Powertrain Verification Test VER-5

NOTE: If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING  .
  1. Inspect vehicle to ensure all engine components are connected. Reassemble and reconnect components as necessary. Connect scan tool to Data Link Connector (DLC). If a comprehensive component DTC was repaired, go to next step. If a major OBD-II monitor DTC was repaired, go to step  3 .
  2. Ensure fuel tank is at least 1/4 full. Turn off all accessories. After ignition has been off for 10 seconds, start engine and let it run for 2 minutes. If GOOD TRIP counter changed to one or more and no new DTCs are present, repair is complete.
  3. If repaired DTC has reset, repair is not complete. Check for related Technical Service Bulletins (TSBs) or flash updates and return to DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  4. If another DTC has set, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  5. Using scan tool, monitor appropriate pre-test enabling conditions until all conditions have been met. Once conditions have been met, select appropriate OBD-II monitor.
  6. If monitor ran, and GOOD TRIP counter changed to one or more, repair was successful and is now complete. If repaired OBD-II DTC has reset or was seen in monitor during road test, repair is not complete. Check for any related TSBs for flash updates and return to DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  7. If another DTC has set, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
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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.

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