Intake Door

OPERATION CHECK



1. Start engine.
2. Turn fan control knob to 4-speed.
3. Check recirculation.
a. Press recirculation switch. Recirculation indicator should light.
b. Listen for intake door position change (you should hear blower sound change slightly).

NOTE: Recirculation does not operate in DEF mode.

INSPECTION FLOW



SYMPTOM: Intake door does not operate.

DIAGNOSTIC PROCEDURE