Visual Inspection: Notes

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Ford factory add-on devices such as:

• Electronic add-on items:
  • A/C
  • generator (alternators)
  • engine turbo
  • cellular telephone
  • cruise control
  • CB radio
  • linear amplifiers
  • backup alarm signal
  • computer
• Vehicle modification
• These items, if not installed correctly, will affect the PCM or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, abnormal tire size or axle ratio changes.
• Leaks, refer to LEAKAGE INSPECTION .
• Correct linkage adjustments, refer to AUTOMATIC TRANSMISSION - AUTOMATIC TRANSAXLE/TRANSMISSION - EXTERNAL CONTROL article.