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. Refer to Operational Check.
Can a symptom be duplicated?
YES >> Refer to Initial Inspection and Diagnostic Overview.
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. Refer to Operational Check If other symptoms exist, refer to Initial Inspection and Diagnostic Overview.
NG >> Repair or adjust air mix door control linkage. Refer to Air Mix Door Cable Adjustment.