The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor in accordance with signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent→ B/L → floor → mix.
The Air conditioner Control Module sets DTC B2409 if Driver Direction 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 Driver Direction 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 potentiometer as a function of mode door position.
Mode Door Position | Voltage |
VENT | 0.3±0.15V |
BI-LEVEL | 1.4±0.4V |
FLOOR | 2.5±0.4V |
MIX | 3.6±0.4V |
DEF | 4.7±0.15V |
