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 Airconditioner Control Module sets DTC B1209 if the Feed Back signal of Intake Actuator has been detected over 4.9V for 0.3 seconds.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage check |
•
Short to battery in signal(Feedback) circuit
•
Open in ground circuit
•
Faulty Intake Actuator
•
Faulty Air Conditioner Module |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
Feedback circuit has been detected over 4.9V for 0.3 seconds | |
Failsafe |
•
Intake Actuator is moved and fixed at FRE position if FRE is selected or REC position if REC is selected. |
Door position | Voltage |
FRE | 0.3±0.15V |
REC | 4.7±0.15V |
