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I have a komatsu wa-250-5 We put a new alternator in, and I…

I have a komatsu wa-250-5We...
I have a komatsu wa-250-5We put a new alternator in, and I get an error call e03, upon further inspection it turns out to be a code AB00MA the R terminal isn't sending a signal. I took the plug off and checked for a short to ground, from that pin I get about 45-50 ohms of resistance to chassis ground. I'm stumped. Can I run a new wire from there to the plug that goes to the cab?
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Answered in 17 hours by:
5/16/2017
Mechanic: Dan, Technician replied 5 years ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 15,140
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Hi my name is***** will be glad to try to help. Bare with me while I look up this code.

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Mechanic: Dan, Technician replied 5 years ago

E3 is a generic informational error message.The actual fault needs to be looked into for the full fault code. You are correct that is alternator. What is the serial number of your machine?

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Customer reply replied 5 years ago
Hey dan, I got the issue solved. Turns out it was a wire shorting out at on the controller side of the circuit.
Mechanic: Dan, Technician replied 5 years ago

Thanks for the update. Yes it sounds like thats why you werent getting R terminal signal to the alternator.

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Customer reply replied 5 years ago
Hey not a problem. The operator bought me lunch ow that he doesn't have to listen to the beeping.
Mechanic: Dan, Technician replied 5 years ago

Ya can't go wrong there. Lunch is always a nice reward. Glad you got it resolved.

Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 15,140
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Dan
Dan
Dan, Technician
Category: Construction and Road Equipment
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Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.

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