Commander 4WD V8-4.7L Flex Fuel (2009)
Power Door Lock Switch: Description and Operation
Power Lock Switch - Operation
OPERATION
The driver side window/lock switch combines a power lock switch, a driver power window switch with an Auto-down and Auto-up feature, master
switches for each passenger door power window, a power window lockout switch, a power mirror selector switch, and four power mirror adjustment
switches in a single assembly. The switches in the window/lock switch can be diagnosed using conventional diagnostic tools and methods.
Power Lock Switch
The power lock switch circuitry is connected in series between ground and the driver door switch mux input of the instrument cluster (without memory).
If equipped with the memory system, the circuitry is connected to the memory mirror module. Each power lock switch position (Lock, Unlock, and
Neutral) provides a different resistance value to the instrument cluster or memory mirror input, which allows the instrument cluster or memory module to
sense the switch position. Based upon the power lock switch input, the instrument cluster or memory module controls the battery and ground feed outputs
to the individual power lock motors to lock or unlock the door latches. The Light-Emitting Diode (LED) in the power lock switch is connected to battery
current through the power window circuit breaker in the Integrated Power Module (IPM) on a fused ignition switch output (run-acc) circuit so that the
switch will be illuminated whenever the ignition switch is in the On or Accessory positions.
Power Window Switches
The power window switch circuitry is connected to battery current through a circuit breaker in the Integrated Power Module (IPM) on a fused ignition
switch output (run-acc) circuit so that the power windows will operate whenever the ignition switch is in the On or Accessory positions. Each two-way,
momentary master passenger power window switch in the window/lock switch provides battery current and ground to the individual power window
switches on each passenger door so that the power window switch controls the battery current and ground feeds to its respective power window motor.
The switch for the front driver and passenger window include an auto-up/down feature. When both front control switches from the driver or the front
passenger window switch is actuated to the second up/down detent the DDM/PDM drives the window to the full up/down position. For passenger control
from the master window switch a CAN message is sent from the DDM to the PDM. The Auto-up/down event is cancelled by actuating the paddle either
up or down. When the two position window lockout switch in the window/lock switch is depressed and latched in the lockout position, the battery current
feed to each of the individual passenger power window switches is interrupted so that the passenger door power windows can only be operated from the
switches in the window/lock switch. The window lockout switch also controls the battery current feed for the LED in each passenger power window
switch so that the switch will not be illuminated when it is locked out. The front windows are controlled by the Driver Door Module (DDM) and
Passenger Door Module (PDM) respectively. The front window regulators are hard wired to the DDM and PDM. The front window regulators have 4
additional hall circuits (power, ground, and two hall sense signals) that are used for feedback for window control. In the event of a hall sensor failure the
window will move up/down in 1 second intervals. Diagnostic faults are set for hall sensor failures that can be read using the scan tool.
