Parasitic drain

Tiny
PPCAYER@CHARTER.NET
  • MEMBER
  • 2001 FORD RANGER
  • 2.5L
  • 4 CYL
  • 2WD
  • MANUAL
  • 260 MILES
I have a parasitic drain on my truck listed above 186 mv and I think I traced it to GEM module.

How can I test the module or what happens on the circuit board? I think I have two parasitic drains. One on the battery saver relay and the other on the lamp relay

No power windows or door lock or keyless entry.
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Wednesday, November 3rd, 2021 AT 5:17 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

As far as testing the GEM, the can-bus needs scanned. CAN stands for controller area network. Basically, all computers/modules are tied together via a few wires. This type of scan will retrieve codes related to the GEM. These codes will likely start with a B and not the traditional P.

Here is a video showing how this procedure is done:

https://youtu.be/InIlnsjOVFA

Let me know if that is something you can have done. Also, as far as the module, there is a printed circuit board in it which can fail.

Take care and let me know.

Joe
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Wednesday, November 3rd, 2021 AT 8:53 PM

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