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02-23-4
  • DIAGNOSTIC TROUBLE CODE (DTC) - P1635 AND/OR P1639 PRESENT AFTER POWERTRAIN CONTROL MODULE (PCM) OR INSTRUMENT CLUSTER REPLACEMENT - GASOLINE ENGINE VEHICLES ONLY
  • LAMP - 4X4 LAMP ILLUMINATED AFTER POWERTRAIN CONTROL MODULE (PCM) OR INSTRUMENT CLUSTER REPLACEMENT - GASOLINE ENGINE VEHICLES ONLY
  • SPEEDOMETER - INACCURATE AND/OR INOPERATIVE AFTER POWERTRAIN CONTROL MODULE (PCM) OR INSTRUMENT CLUSTER REPLACEMENT - GASOLINE ENGINE VEHICLES ONLY
Publication Date: November 14, 2002

FORD:
1999-2002 MUSTANG
2000-2002 FOCUS
1999-2002 EXPEDITION, F-150
2000-2002 E SERIES
2001-2002 EXPLORER SPORT TRAC, EXPLORER SPORT, RANGER
2002 EXPLORER
LINCOLN:
1999-2002 TOWN CAR, NAVIGATOR
2002 BLACKWOOD
MERCURY:
2002 MOUNTAINEER

Article 02-5-8 is being republished in its entirety to update the Service Procedure and to clarify build dates for Explorer.

This article applies to all vehicles listed with the exception of 2002 Explorer. This article applies to 2002 Explorer (SLAP) St. Louis Assembly Plant built before 3/11/2002 and 2002 Explorer (LAP) Louisville Assembly Plant built before 3/4/2002 only.

ISSUE:

Some vehicles may exhibit an inoperative or inaccurate speedometer, 4x4 lamp illuminated, and/or Diagnostic Trouble Code (DTCs) P1635 or P1639 present after a Powertrain Control Module (PCM) or Instrument Cluster replacement. This may be caused by the Vehicle Identification (VID) block that must be programmed when replacing the PCM. .

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