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Old 01-10-2012, 03:07 PM   #1
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no lights on shifter pad

motor home won't start due to no power to ecu was fine till i put new batteries in. all fuses are good, anyone know where the trans ecu is located or is there some in line fuse

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Old 01-10-2012, 04:55 PM   #2
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Location: Freeport, ME
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Your transmission ECU is located in the shift pad. The most common problem is a butt splice connector coming off the batteries. One thing is to check that all the smaller wires are reattached to the positive terminal on the chassis battery. It is real easy to leave one off. You might have also accidently pulled on the wire that gives power to the ECU and screwed up that butt splice. This splice is located in or close to the battery compartment.

Check out this post
Allison MD 3060 Problem

Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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Old 01-11-2012, 08:56 AM   #3
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When I had a similar problem, (a "Do Not Shift" display on the shift pad), CoachNet paid the tow to Detroit Diesel near the Mall of America, (the nearest "authorized Allison service" dealer).
Four days later they had it fixed.
After trying most everything else, they finally had found one BAD wire.
That wire carried 12vdc, (but not enough amps to allow the shift pad to function).
They replaced both the pos and neg wires from the batteries to the Allison VCM, (vehicle control module), which is located up under my dash.

The original bill was over $2400.00.

I refused to pay that..... for 40ft of 14ga wire, 4 connectors and labor, (NO OTHER PARTS)!

They finally reduced it to a MERE $1700.00!

I am sure they were able to fix the next one in less than 2 -3 hours.......
and I paid for their education!

'96 Safari Sahara
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