Ford F150 Pickup. Instruction - part 270

Window Control Switch 

The window control switch: 

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is located on each front door trim panel.  

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is located on each rear door trim panel (SuperCrew).  

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may be used to raise or lower the driver side and passenger side windows from the window control switch 
on the driver side, or the passenger side windows from the passenger side switches.  

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includes a double detent feature.  

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can instructionly lower the driver side window when the driver window control switch is depressed half way 
(first detent).  

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will completely lower the driver side window when the driver window control switch is fully depressed 
(second detent) and then released.  

DIAGNOSIS AND TESTING 

GLASS, FRAMES AND MECHANISMS 

Refer to POWER WINDOWS for schematic and connector information. 

Special Tool(s) 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup

  

Fig. 4: Identifying Glass, Frames And Mechanisms Special Tool(s) 
Courtesy of FORD MOTOR CO. 

Principles of Operation: 

The generic electronic module (GEM) controls the opening of the driver window by activating the one-touch 
down window relay. 

The GEM controls instruction down and auto down window movement with the down window relay. The relay is 
activated by applying ground directly to one side of the down window relay coil, and deactivated by removing 
the ground signal. The delayed accessory relay provides power for the operation of the power windows and the 
roof opening panel (if equipped). The delayed accessory feature is active when the ignition switch is in the 
RUN or the ACC position, or when the ignition switch is changed from RUN or ACC to the OFF/LOCK 
position and the driver and passenger doors are closed. 

Down window motion operates in two modes, instruction mode and auto mode. When the GEM detects the first 
down position, first detent on the switch, it enters manual mode. In manual mode, the window will move 
downward only while the switch is depressed. Similarly, when the GEM detects the second down position, 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup

  

second detent on the switch, it enters auto mode. In auto mode, the window will open completely with just a 
momentary press of the switch. 

The GEM will activate the one-touch down window relay until one of the following conditions is met: 

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The driver window control switch is pushed to the UP position.  

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The driver window control switch is released (OFF position) and then moved to the down position (first 
detent) or the one-touch down position (second detent).  

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Seven seconds have elapsed since the one-touch down feature was initiated.  

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A window regulator motor stall condition is detected on the one-touch down sense line inputs.  

The GEM will deactivate the delayed accessory feature when: 

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the driver/passenger door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.  

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minutes have elapsed since the ignition switch was changed from ACC or RUN to the OFF/LOCK 
position.  

The power sliding window is controlled by the power sliding adjust switch. The power sliding adjust switch 
controls the power and ground to the power sliding motor to open or close the window. 

The rear window defrost is controlled through the EATC module. Once the switch is turned ON, the EATC 
module grounds the rear window defrost relay coil to activate the rear window defrost relay and provide power 
to the rear window defrost grid. The EATC will turn the rear window defrost off after approximately 10 
minutes. 

Inspection and Verification 

1. Verify the customer concern by operating the system.  

2. Visually inspect for obvious signs of mechanical or electrical damage. 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup

  

Fig. 5: Visual Inspection Chart 
Courtesy of FORD MOTOR CO. 

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before 

proceeding to the next step.  

4. If the diagnostic tool does not power up: 

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check that the program card is correctly installed.  

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check the connections to the vehicle.  

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check the ignition switch is in RUN position. 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup