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Pinion Factor Procedure (All Fwd Cars Except Neon, SEBRING Convertible, SEBRING Sedan & Stratus Sedan, & All Fwd Vans)

  1. Electronic pinion factor procedure must be performed to provide proper speedometer operation if Transmission Control Module (TCM) is replaced. If pinion factor procedure is not performed, improper speedometer readings may exist or speedometer may not operate. Pinion factor procedure must be performed using Chrysler's Diagnostic Readout Box (DRBIII®) scan tool.
  2. Connect scan tool to Data Link Connector (DLC) below driver's side of instrument panel. For DLC location, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  3. Select TRANSMISSION system, MISCELLANEOUS functions, then PINION FACTOR. Scan tool will now display tire size. If tire size is incorrect, press ENTER key and select correct size. Press PAGE BACK key to exit procedure.
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