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Allison 4000 WTEC 3 Troubleshooting Manual TS2973EN

January 22, 2017, 07:58:31 am

Yahoo Message Number: 109578

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Anybody got an electronic copy of the Allison 4000 WTEC 3 Troubleshooting Manual TS2973EN? The "Files" section here has one for the 4th generation controls and I found one of those on the internet too. However, our coach has the older 3rd generation controls. The pin-outs and wire numbers do not match.

Am having an intermittent loss of power to some part of the Allison system. Throws a 35 00 code but nothing else. It's not the battery connections or condition.

TIA

Dave M. 2002 Affinity #6103

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Re: Allison 4000 WTEC 3 Troubleshooting Manual TS2973EN

Reply #1 – January 22, 2017, 08:28:09 am

Yahoo Message Number: 109579

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That is usually a result of the hot wire from the batteries to the trans ecu. Check he fuse holder and connections. The fuse holder may be the issue. There 2 wires that are hot all the time, one for the engine ecu and one for the trans ecu. I would check and clean both and be sure they are making good connection.

Mikee

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Re: Allison 4000 WTEC 3 Troubleshooting Manual TS2973EN

Reply #2 – January 23, 2017, 10:51:01 am

Yahoo Message Number: 109593

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10-4. An Allison shop found a bad wire crimp in that circuitry on my coach one time. Coach shut down on the road.

George Harper
04 Allure 31098

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Re: Allison 4000 WTEC 3 Troubleshooting Manual TS2973EN

Reply #3 – January 24, 2017, 07:28:06 am

Yahoo Message Number: 109604

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Thanks for the responses. Weather has turned sour. Will return to the problem in a couple of days. We have a couple of months before the coach has to move from our spot here just north of Phoenix.

Dave M. 2002 Affinity #6103

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