Concorde V6-215 3.5L SOHC (1996)
Dimmer Switch: Description and Operation
CIRCUIT OPERATION
The dimmer control is used to control the intensity of the instrument panel lamps. The dimmer control also has a switch located in it that is used to
turn the interior lamps ON. The switch is located on the left side of the instrument panel. Power for the control is supplied from the F33 circuit,
which is the feed for the parking lamps. This circuit is HOT when the parking lamp switch is in the ON position. Ground for the control is
provided on the Z1 circuit which terminates on the Airbag Control Module (ACM) bracket.
The control uses a variable resistor and is connected to circuit E19. Circuit E19 connects to the Body Control Module (BCM). When the operator
moves the control, resistance in the circuit changes and the signal sent to the BCM changes. With the change is resistance the BCM adjusts the
voltage to the lamps changing the lamp intensity.
When the dimmer control is moved to the high end of travel past the detent the interior lamps are turned ON. This is accomplished when the
switch in the control is CLOSED connecting circuits L7 and M32. Circuit M32 connects from the switch to the BCM.
The BCM after receiving this input from the switch grounds the M2 circuit. The M2 circuit is spliced and connects to all the interior lamps.
