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Old Oct 30, 2025 | 02:04 AM
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M60A3Driver
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Joined: May 2023
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From: New Jersey
Default Re: Fuel pump has power but doesn’t work?

[QUOTE=pizzaguy;1001623]
Originally Posted by M60A3Driver
Here's a video on how to test your RCM:
/QUOTE]
All that does is prove the coil in the relay is good, and it's path to the pins is good. It does not validate unswitch power to the armatures, or switched power from armature to external pin.
Additionally, it does not prove the armature contacts are making contact and providing a low resistance path from source to load.

Measuring the output pin(s) in question, with the module in the car, would validate all of the above.
Thank you for the clarification.
 
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