The actuator contains a motor that changes intake door position and a potentiometer that monitors position of the door. When the driver changes the air intake switch, the ECU operates intake door motor to turn the intake door to the intended position. (in the FRESH mode, the intake door is closed. In REC mode, the intake door is opened) During operation the potentiometer delivers an intake door position to the A/C ECU.
The Air conditioner Control Module sets DTC B2408 if Intake actuator has not been moved to the mode,where air condition control module controls, within 40 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 40 seconds | |
Failsafe |
•
Fixed as current position |
※ Voltage value of Intake potentiometer as a function of position of Intake door
Door position | Voltage |
FRE | 0.3±0.15V |
REC | 4.7±0.15V |
