Visual Inspection

This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Mazda 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 properly, 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. See AUTOMATIC TRANSMISSION SPECIAL TESTING PROCEDURE  .
• Proper linkage adjustments. See SHIFT CABLE AND BRACKET ADJUSTMENT .