John Deere 1070 injector shut off solenoid

JDsmithGR · May 25, 2019

I was running my JD 1070 and the negative battery terminal popped loose. The tractor shut down. I put the negative cable back on and then the tractor would crank, but not start.
If I manually pull the injector shut off solenoid back, the tractor starts right up. I zipped tied it back and it ran fine back to the barn. Trying to trouble shoot what's gone wrong has got me stumped.
I've confirmed I have not voltage to the solenoid (there are three wires, red, white and black). One is suppose to be more power to pull the solenoid back and the other wire holds it back once the tractor is running. I've checked all the fuses and all look fine. I've swapped the fuel relay with the second (same) relay, still no power. Where do I trouble shoot next? Any ideas are welcome.

Zebrafive · May 26, 2019

My guess is module key 6 P/N M803344 failed

joecdeere · May 26, 2019

check your email

radios1 · May 26, 2019

Zebrafive said:
My guess is module key 6 P/N M803344 failed

$193.00 + $8.00 shipping which is crazy, John Deere's way of making a BIG profit!..

JDsmithGR · May 26, 2019

radios1 said:
$193.00 + $8.00 shipping which is crazy, John Deere's way of making a BIG profit!..

Thanks all. Ouch. Looks like that part is a control relay module. Do you know what it does? The service advisor manual doesn't call that out as one of the things to test.

JDsmithGR · May 26, 2019

I was out bush hogging. Just came in to take a break.

radios1 · May 26, 2019

JDsmithGR said:
Thanks all. Ouch. Looks like that part is a control relay module. Do you know what it does? The service advisor manual doesn't call that out as one of the things to test.

here is another owner with the same problem, it was fixed.. https://www.tractorbynet.com/forums...2-help-interpreting-wiring-diagram-using.html basically, it's just a few relays with a timer, and I believe it also has the neutral safety's in there, if a tractor has a turbo, it has to run a bit in idle to cool down the turbo..

JDsmithGR · May 26, 2019

radios1 said:
here is another owner with the same problem, it was fixed.. https://www.tractorbynet.com/forums...2-help-interpreting-wiring-diagram-using.html basically, it's just a few relays with a timer, and I believe it also has the neutral safety's in there, if a tractor has a turbo, it has to run a bit in idle to cool down the turbo..

Thanks. I'm going to dive back in tomorrow.