Visual Inspection: Notes

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:
  • air conditioning.
  • generator (alternator).
  • engine turbo.
  • cellular telephone.
  • cruise control.
  • CB radio.
  • linear booster.
  • backup alarm signal.
  • computer.
• Vehicle modification:

  These items, if not installed correctly, will affect the powertrain control module (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 TRANSAXLE-TRANSMISSION EXTERNAL CONTROLS .