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2009 charger 3.5 starter relay voltage drop

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6 years 4 months ago #29187 by Diego
2009 charger 3.5 starter relay voltage drop was created by Diego
it clicks, I checked the relay and have a voltage drop of around 7 at terminal 86 when I crank it and that’s where I been stuck for a couple of days. I been jumping it from constant to 87 with a switch for now

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6 years 4 months ago #29191 by Chad
Replied by Chad on topic 2009 charger 3.5 starter relay voltage drop
The ground for the Relay control (86) comes from the PCM, C3 Pin 38 (DK GRN/ORG). Are you reading 7 volts here, too? If so, verify that ALL Powers and Grounds at the PCM are good. If you find no fault, I would blame the Starter Relay Control Driver inside the PCM.

If not, if you are seeing a good ground here, but not at Relay Teminal (86), then the DK GRN/ORG wire is bad, somewhere.
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right. :-)
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6 years 4 months ago #29222 by Diego
Replied by Diego on topic 2009 charger 3.5 starter relay voltage drop
The voltage drop happens at the green and orange cable only when the relay is in place but I already swapped it was a couple other ones and the same thing happens

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6 years 4 months ago #29223 by Diego
Replied by Diego on topic 2009 charger 3.5 starter relay voltage drop
I made a video so maybe that shows something

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6 years 4 months ago #29227 by Chad
Replied by Chad on topic 2009 charger 3.5 starter relay voltage drop
With the Relay removed, what voltages do you read in the 85 and 86 terminals?

"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right. :-)
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6 years 4 months ago #29269 by Diego
Replied by Diego on topic 2009 charger 3.5 starter relay voltage drop
It was a bad motor to Frame ground after all lol
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