RAM 2500 Truck 4WD V10-8.0L VIN W (1997)
Power Window Switch: Description and Operation
SYSTEM OPERATION
The power windows are controlled by two-way momentary switches mounted in a bezel on the trim panel of each front door. A second power
window switch on the left side allows the driver to control the passenger side window. The power windows will only operate when the ignition
switch is in the On position.
Both front door windows can be raised or lowered electrically by operating the power window switches. The switches control the battery and
ground feeds to the power window motors.
The power window switches cannot be repaired and, if faulty or damaged, they must be replaced.
CIRCUIT OPERATION
Master Window Switch (Left Window Operation)
When the window switch is moved to the window DOWN position, voltage is supplied on the F21 circuit through the CLOSED contacts in the
switch to the Q21 circuit. The Q21 circuit connects from the switch to the left front window motor. Grounding is provided on circuit Q11 from the
motor back to the switch. The ground is passed through the switch to ground on the Z3 circuit.
When window UP operation is selected, the power and ground circuits are reversed. Circuit Q11 is the feed and circuit Q21 is the ground.
Master Window Switch (Right Window Operation)
When the window switch is moved to the window DOWN position, voltage is supplied on the F21 circuit through the CLOSED contacts in the
switch to the Q26 circuit. The Q26 circuit connects from the master switch to the right window switch. A bus bar internal to the right switch passes
the voltage through the switch to circuit Q22. Circuit Q22 connects from the switch to the right window motor. Grounding is provided on circuit
Q12 from the motor back to the right switch.
The ground is passed through the switch on a bus bar to circuit Q16. Circuit Q16 then connects to the master switch. The ground is passed through
the switch to ground on the Z3 circuit.
When window UP operation is selected, the power and ground circuits are reversed. Circuits Q16 and Q12 are the feeds and circuits Q22 and Q26
are the grounds.
Right Window Switch
When the window switch is moved to the window DOWN position, voltage is supplied on the F21 circuit through the CLOSED contacts in the
switch to the Q22 circuit. The Q22 circuit connects from the switch to the right front window motor. Grounding is provided on circuit Q12 from
the motor back to the switch. The ground is passed through the switch to the Q16 circuit. The Q16 circuit connects from the right switch to the
master switch. Ground is passed through the master switch to ground on the Z3 circuit.
When window UP operation is selected, the power and ground circuits are reversed. Circuit Q12 is the feed and circuits Q22 and Q26 are the
ground.
