Air Mix Door

TROUBLE DIAGNOSIS


Air Mix Door

SYMPTOM: Air mix door does not change.

INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE
1. Turn the temperature control dial clockwise until maximum heat.
2. Check for hot air at discharge air outlets.
- GO TO 2.
2.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Turn the temperature control dial counterclockwise until maximum cold.
2. Check for cold air at discharge air outlets.
Can a symptom be duplicated?
YES - GO TO 4.
NO - GO TO 3.
3.PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Operational Check.
Can a symptom be duplicated?
YES - How To Perform Trouble Diagnosis For Quick And Accurate Repair.
NO - System OK.
4.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
- GO TO 5.
5.CHECK AIR MIX DOOR CONTROL LINKAGE
Check and verify air mix door mechanism for smooth operation.
OK or NG
OK - If the symptom still exists, perform a complete operational check. Operational Check If other symptoms exist, How To Perform Trouble Diagnosis For Quick And Accurate Repair.
NG - Repair or adjust air mix door control linkage. Air Mix Door Cable Adjustment.