This does not seem to be any simple malfunction. See if you can retrieve any trouble codes.
1. Press and hold AUTO and recirculated air switches. See Fig. 2 . Turn ignition on. All indicators will flash 4 times at one-second intervals. Tone will sound when indicators flash.
2. A/C system will automatically enter diagnostic code check mode. To end indicator check, press and release OFF switch. Read codes at temperature display. See Fig. 2 . If a normal code (Code 00) is displayed but problem persists, go to symptom chart. Trouble shoot symptoms in numeric order from lowest to highest.
3. If trouble code is displayed, proceed to appropriate trouble shooting procedure. See DIAGNOSTIC CODE IDENTIFICATION table. Codes are displayed in ascending order. To slow rate at which codes are displayed, press fresh air button to change display to step operation. Each time fresh air button is pressed, display changes by one step.
4. If tone sounds as code is displayed, problem currently exists. If tone does not sound as code is displayed, problem occurred in past and does not presently exist. If ambient temperature is -4 F (-20 C) or less, code may be displayed even if system is functioning normally.
Saturday, December 26th, 2009 AT 10:16 AM