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 |
•
Poor contact in harness
•
Open or short in motor power circuit
•
Faulty Driver Direction 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. |
Mode Door Position | Voltage |
VENT | 0.3V |
VENT/DEF | 1.03V |
VENT/FLOOR | VENT/FLOOR |
VENT/DEF/FLOOR | 2.5V |
FLOOR | 3.2V |
DEF/FLOOR | 3.97V |
DEF | 4.7V |
