Pinpoint Test M: A Single Power Window Does Not Operate Correctly - Slow Upward/Downward Window Travel

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test M: A Single Power Window Does Not Operate Correctly - Slow Upward/Downward Window Travel

Normal Operation

Under normal operation, it should not take longer than 6 seconds for the window to travel to the fully OPEN or CLOSED position.

This pinpoint test is intended to diagnose the following:
- Dirt or contaminants in glass run
- Glass runs not fully seated
- Exterior beltline moulding
- Window regulator and motor assembly



PINPOINT TEST M: A SINGLE POWER WINDOW DOES NOT OPERATE CORRECTLY - SLOW UPWARD/DOWNWARD WINDOW TRAVEL

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M1 CHECK THE POWER WINDOW OPERATION


- Start the engine.
- Monitor the amount of time it takes for the suspect window to operate to the fully OPEN and CLOSED positions.
- Does it take more than 6 seconds for the window to travel to the fully OPEN or CLOSED positions?

Yes
GO to M2.

No
The system is functioning correctly at this time.

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M2 CHECK THE GLASS RUNS AND EXTERIOR BELTLINE MOULDING CONDITION


- Ignition OFF.
- Visually inspect the exterior beltline moulding and glass runs for correct installation or any damage.
- Is the exterior beltline moulding and glass runs OK?

Yes
GO to M3.

No
REINSTALL or INSTALL a new exterior beltline moulding and/or glass run. TEST the system for normal operation.
For information regarding the exterior beltline moulding, REFER to Auxiliary Step / Running Board.
For information regarding the glass runs, REFER to Door Glass Top Run - Front Door Glass Top Run - Front or Door Glass Top Run - Rear Door Glass Top Run - Rear.

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M3 LUBRICATE THE GLASS RUNS AND BELTLINE MOULDING


- Remove/clean the glass runs and beltline mouldings using a clean cloth saturated with silicone spray. For LH front (Expedition/Navigator) or RH front (Navigator), de-initialize, then initialize the window motor. Refer to Window Motor Initialization Testing and Inspection. Test the system for normal operation.
- Is the concern still present?

Yes
INSTALL a new window regulator and motor assembly. For information, REFER to Window Regulator - Front Door Window Regulator - Front Door or Window Regulator - Rear Door Window Regulator - Rear Door. TEST the system for normal operation.

No
The system is functioning correctly at this time.

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