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.
DTC B1208 sets if the Intake Actuator Sensor signal is at or below 0.1V for 0.3 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Open circuit in signal/power harness. 2. Short circuit in signal/power harness. 3. Faulty Intake potentiometer. |
Enable Conditions |
•
Ignition ON | |
Threshold value |
•
Feedback circuit has been detected open or below 0.1V for 0.3 seconds | |
Failsafe |
•
Setting mode : REC Fix at REC position
•
Setting mode : Except REC Fix at FRE 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 |
