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Old 04-26-2021, 11:35 PM   #1
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2016 Winnebago Forza 36G Fault Codes

Hi there. I used a ScanGuage-D to see what the fault codes were for my parents' coach. The coach wouldnt start, but the engine would turn over. The codes are ID-118, FM-1, CNT-0 and ID-117, FM-1, CNT-0. This coach has a freightliner chassis and an Allison transmission. Any ideas as to what these would be?
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Old 04-27-2021, 12:18 AM   #2
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Welcome to iRV2.

Codes are generated from the Cummins engine's ECM .
Is the engine a 6.7l ISB ?
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Old 04-27-2021, 01:14 AM   #3
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Yes it is.
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Old 04-28-2021, 07:04 AM   #4
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ScanGauge codes are cryptic and known only to ScanGauge. Call them to decipher.
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Old 04-30-2021, 09:42 PM   #5
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Ok ; Re our private messages and your feed back from Cummins the 117/118 codes are fuel pressure related as per the pdf below .
BUT , the ISB isn't listed , in the pdf, as an engine the codes apply too .

With the batteries being out for the winter as you mentioned in the PM, wiring damage is a possibility . I'll check to be sure , but the fuel pressure sensor should be on the HPCR pump . I don't think I have a location diagram for the coach version of the engine , so I'll have to search one out.
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File Type: pdf Cummins codes.pdf (398.7 KB, 3 views)
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Old 04-30-2021, 10:54 PM   #6
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Ok , from the internet , on the coach version of the 6.7l Cummins , I believe the HPCR pressure pump ( blue oval ) will be in this location .

HOWEVER , in another photo the location of the air system compressor ( low mounted here ) and the fuel pressure pump are reversed .

The engine wiring harness isn't shown , but should start at one multiple connector of the ECM , and run to all the sensors . the other connector would be the chassis harness connector .
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Old 05-02-2021, 07:24 PM   #7
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wow, thanks for that. This engine looks a little different especially when it comes to the fuel lines. It is nearly impossible to get to that spot with the way the coach is currently parked. I will try to get at it tomorrow unless it rains. Thank you.

Is there a spot where I could prime the engine or is it usually the electronic priming with the key 3 times? I tried the electronic version but didnt hear a pump come on
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Old 05-03-2021, 10:25 AM   #8
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Quote:
Originally Posted by Dunmpoiuy View Post

Is there a spot where I could prime the engine or is it usually the electronic priming with the key 3 times? I tried the electronic version but didn't hear a pump come on
Ok , fuel priming on a Cummins B , some years are set up to run a lift pump for ( 20/30 seconds) on key ON, up to three cycles before cranking the engine; other years require the starter be bumped ( a second or two of cranking ) to start the timed cycle.
There was an old thread here in the forums , that said that Freightliner had neglected to install a lift pump in certain years of chassis , because Cummins was no longer placing one on the engine , another thread , where a member was replacing his lift pump ( mounted behind the Cummins ECM on the side of the engine with a cooling plate ; where the fuel cooled the ECM ).
I've not been hands on , on the coach version of the 6.7 ( only the Dodge ) so I'll guess that if the lift pump is behind the ECM , unless you're under the engine when it's running , you won't hear it.

I'll see if I can track down the other threads , to see if they have any useful info , and link you to them.

EDIT: Back in time to add them here.

http://www.irv2.com/forums/f26/atten...sb-468655.html

http://www.irv2.com/forums/f123/acce...ns-525996.html
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Old 05-03-2021, 11:06 PM   #9
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The engine is primed and there is fuel at the rail. I cant get to the Pressure sensor unfortunately and may have to call a mechanic to come out.

I appreciate all the information.

Thank you,
Bill
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