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HVAC
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the Fresh Air Mode and Power A/C is selected. On
turning the knob back to Chest/ Chest-Leg/Leg Mode
from Leg Defrost/ Defrost Mode, the last selected
settings are restored (provided that there has been
no user intervention in between).
The Mode knob Rotary ring Total Rotation Span is
270° with 5 detents, each of 67.5° (between detents),
including both the end positions. The Position of the
mode actuator is based on the Knob position of the
Control Panel during the Ignition ON / OFF.
PINOUT
Pin
NO.
Rotation from
Face to Def. Posi-
tion
Rotation from
Def. to Face Posi-
tion
1
Ground (Pot)
Ground (Pot)
2
Feedback Signal
From pot. to Con-
trol Panel
Feedback Signal
From pot. to Con-
trol Panel
3
+Ve (Pot.)
+Ve (Pot.)
4
NC
NC
5
Motor Grd.
Motor +Ve
6
Motor +Ve
Motor Grd.
14. INSPECTION OF MODE AND TEMPERATURE ACTUATOR
The actuator door flap is positioned on the mode/temperature detent select by the user by means of the re-
spective rotary knob. The control panel provides voltage corresponding to the user selected knob position.
The servomotor in the actuator cause the door flaps to move to the desired location and provide a feedback
signal to the control panel.
1. To calibrate the actuator follow the below steps
2. Turn the IGN OFF and disconnect the battery.
3.Wait for approximately one minute and then reconnect the battery.
Once the battery is connected again wait for one minute and turn the IGN ON. Actuators are now calibrated.
Wait for one more minute after IGN is turned ON until the actuators are calibrated
Feedback Signal Values for Mode Actuator
Sr.
No.
Detent
Position
Mode se-
lected
Knob angle in
degrees (CW
starting from ini-
tial chest mode)
voltage
Min (V)
Nominal (V)
Max (V)
1
1
Chest
0º
1.0
1.05
1.1
2
2
Chest-Leg
67.5º
1.6
1.65
1.7
3
3
Leg
135º
2.23
2.28
2.33
4
4
Leg-Defrost
202.5º
2.87
2.92
2.97
5
5
Defrost
270º
3.48
3.53
3.58