Operation CHARM: Car repair manuals for everyone.

Initial Inspection and Diagnostic Overview

1. Verify the customer's concern by operating the climate control system to duplicate the condition.
2. Inspect to determine if one of the following mechanical or electrical concerns apply:
Mechanical
^ Loose, missing, or damaged drive belt.
^ Loose or disconnected A/C clutch.
^ Loose, misrouted, or damaged vacuum lines.
^ Discharged A/C system.
^ Broken or leaking refrigerant lines.
^ Broken or leaking vacuum control motor.
Electrical
^ Blown fuse.
^ Blower motor inoperative.
^ A/C compressor inoperative.
^ Cooling fan inoperative.
^ Circuitry open/shorted.
^ A/C control inoperative.
^ Disconnected electrical connectors.
3. If inspection reveals obvious concern(s) that can be readily identified, service as required.
4. If the concern(s) remains after the inspection, determine the symptom(s) and go to the Symptom Chart. Symptom Chart 1