mattyt1984
Senior Member
Please see video cranks good but shows lots of codes. Any ideas this was used to run a fire protection water pump.
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Deere 4045h won't start
- Thread starter mattyt1984
- Start date
MarshallPowerGen
Senior Member
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- Northwestern USA
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- Generator Technician & Equipment Mechanic
"This video is private"
mattyt1984
Senior Member
It's public now
mg2361
Senior Member
Complete engine serial number is needed.
With those voltage too high codes, I suspect a wiring issue. I also do not like the engine rpm at 0 when cranking. Battery voltage good while cranking (+9.5 volts)?
Can you clear the codes, then crank it again to see what comes back?
With those voltage too high codes, I suspect a wiring issue. I also do not like the engine rpm at 0 when cranking. Battery voltage good while cranking (+9.5 volts)?
Can you clear the codes, then crank it again to see what comes back?
mattyt1984
Senior Member
4045HFC28, serial number PE4045L251727
Battery voltage over 12 when cranking I have a new battery and charger on it. I can't see how to clear the codes. After disconnecting battery same codes come bake
Battery voltage over 12 when cranking I have a new battery and charger on it. I can't see how to clear the codes. After disconnecting battery same codes come bake
MarshallPowerGen
Senior Member
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- Nov 26, 2017
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- 446
- Location
- Northwestern USA
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- Generator Technician & Equipment Mechanic
Was there recent work done to the unit? Codes appeared before or after moving it? With all the different codes, I'd start looking at a wiring issue or bad connection at the ECU.
Here's the CTM for that engine with all the electrical and fuel system info (and all the DTC procedures starting at page 292):
https://dealers.doosanportablepower.com/emea/documents/Service/01_Portable Compressors/Engine Manuals/08_7-120,9-110,10-105,14-85_4IRD5AE JD/CTM502 _31MAY07_ PWT4.5and6.8TierIII_GB.pdf
Here's the CTM for that engine with all the electrical and fuel system info (and all the DTC procedures starting at page 292):
https://dealers.doosanportablepower.com/emea/documents/Service/01_Portable Compressors/Engine Manuals/08_7-120,9-110,10-105,14-85_4IRD5AE JD/CTM502 _31MAY07_ PWT4.5and6.8TierIII_GB.pdf
mg2361
Senior Member
I don't remember if going through the menu button will give you a clear codes option. I'll have to dig to see if I can find the monitor instructions.
Anyway, none of the codes will prevent startup. I am concerned with 0 rpm while cranking. Again, I am also concerned with all the similar voltage codes. To repeat myself and Marshall, I suspect wiring /ground issues. Checking the powers and more importantly, the grounds for the ECU. Ground wires for the ECU when backprobed should not be higher than 0.1V with the key on. Might read something higher when cranking (0.4V max). What really needs to happen now is have Service Advisor connected to see if (1), it communicates, which I suspect it will since the monitor is not all dashes, and (2), to watch the readings when cranking to see if it goes into start control.
I know you have many electrical related codes, but has the fuel delivery been checked? Good low fuel system pressure while cranking?
Anyway, none of the codes will prevent startup. I am concerned with 0 rpm while cranking. Again, I am also concerned with all the similar voltage codes. To repeat myself and Marshall, I suspect wiring /ground issues. Checking the powers and more importantly, the grounds for the ECU. Ground wires for the ECU when backprobed should not be higher than 0.1V with the key on. Might read something higher when cranking (0.4V max). What really needs to happen now is have Service Advisor connected to see if (1), it communicates, which I suspect it will since the monitor is not all dashes, and (2), to watch the readings when cranking to see if it goes into start control.
I know you have many electrical related codes, but has the fuel delivery been checked? Good low fuel system pressure while cranking?
MarshallPowerGen
Senior Member
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- 446
- Location
- Northwestern USA
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- Generator Technician & Equipment Mechanic
The monitor (Murphy PV-101) can "Hide" the codes but not clear them, all it's going to do is tell you is what the ECU is seeing through the CANbus. Codes will continue to come back since they're active.
mg2361
Senior Member
Any progress?
mattyt1984
Senior Member
I was not able to find any bad or loose grounds. This unit actually has 2 ECU's. Same codes appear with either of the ECU's.
mg2361
Senior Member
If both ECU's show the same codes, then wiring would be most likely the issue. A short to power within the harness? Have you checked any of those sensor signal voltages to see if they are at 5 volts or higher?
I also think that cranking speed is a bit low.
I also think that cranking speed is a bit low.