Truck only runs with OBD pins 4-5 jumped

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Dec 20, 2025 | 04:09 PM

#11

DerTruck

Record Breaker

Joined: Dec 2018

Posts: 1,082

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Quote:

Originally Posted by HeyYou

Wow. Yep. Your diagram is different than mine. I am looking at the 01 manual though..... I don't have 2000. I wouldn't think they were that much different??

You mixed that up with pin 4 I guess. 2000 and 2001 are identical AFAIK, this is from the 2001 FSM

Dec 21, 2025 | 02:16 PM

#12

Timothy Lindblom

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Joined: Jan 2025

Posts: 19

Likes: 1

From: Savannah, GA

Quote:

Originally Posted by DerTruck

That doesn't look right, the stud should be in the upper bolt location. One wire from the battery and one from the harness along the fuel injectors.

That was it! I had missed the ground that is tied in with the fuel injector harness. I moved the stud up to the top hole and placed both grounds on the stud and the truck runs without the homemade jumper and the no bus issue is gone. I'm glad it was this easy! Thank you to everyone that chimed in!

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