The intake actuator, mounted at the heater unit,controls the air intake source. The intake actuator consists of a motor and a feedback potentiometer. When driver operates the intake switch, ECU receives mode signal from intake switch and operates intake door motot to turn intake door to intended position. (with FRE mode signal, intake door is closed and with REC mode signal, intake door is opened)
In operation, potentiometer delivers intake door position transformed into voltage value to A/C ECU.
Air conditioner Control Module sets DTC B2408 if Intake actuator has not been moved to the mode,where air condition control module controls, within 10 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Poor contact in harness 2. Open or short in motor power circuit 3. Faulty Intake actuator 4. Faulty air conditioner control module |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
No movement to controlled mode position for 10 seconds | |
Failsafe |
•
Fixed as current position |
Door position | Voltage |
FRE | 0.45V |
REC | 4.55V |
