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.
B2408 will set if the intake actuator has not responded to an A/C ECU actuation signal for over 40 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check |
•
Poor contact in harness
•
Open or short in motor power circuit
•
Faulty Intake actuator
•
Faulty air conditioner control module |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
No movement to controlled mode position for 40 seconds | |
Failsafe |
•
Fixed as current position |
Door position | Voltage |
FRE | 0.3±0.15V |
REC | 4.7±0.15V |
