Code flash C1298 & U1040 Help?
#1
Code flash C1298 & U1040 Help?
Having issues pin pointing these flash codes? Has anyone had these codes flash on thier 2003 Bonneville sle? Auto parts guy says its a loss evcm?
#2
Retired
Data issues between components and PCM. Have you done anything to the car recently?
Data issue is also caused by water/corrosion under back seat I think.
Data issue is also caused by water/corrosion under back seat I think.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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Shooter (04-12-2014)
#3
Yes Mike thanks for response! I just had the ICM replaced and One coil pack that it fried. Also an intake gasket. Now its those two codes? what is PCM? Oh and a new battery!
Last edited by Shooter; 04-12-2014 at 02:54 PM. Reason: for got battery
#4
Retired
Your Powertrain Control Module.
Check under your back seat for any wires that are bolted to the body/chassis that might be corroded.
Check under your back seat for any wires that are bolted to the body/chassis that might be corroded.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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Shooter (04-12-2014)
#6
Hey Mike,
I checked the wiring harness under back seat and I found no corrosion at all? I checked all vacuum hoses and they seem to be all good? Would you have any other solutions in mind that I could check?
Thanks
I checked the wiring harness under back seat and I found no corrosion at all? I checked all vacuum hoses and they seem to be all good? Would you have any other solutions in mind that I could check?
Thanks
#7
Retired
Someone else that'* 2000+ better than me should chime in soon.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#8
Senior Member
Well first, you need moi, a Tech II, to see if you can communicate with the EBCM and the PCM.....then you need to pull the harness to the EBCM, check the connections as previously suggested(may need to perform a "drag test").....then check that you have power and ground, and also a fluctuating voltage on the serial data line....can compare this fluctuating voltage to the serial data line in the ALDL....
ps.....I think I post more like a V-8, or at least a V-6.....
ps.....I think I post more like a V-8, or at least a V-6.....
Last edited by Tech II; 04-12-2014 at 05:41 PM.
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Shooter (04-13-2014)
#9
Retired
Do a search in the 2000-2005 section for "data" and you'd be surprised at all the posts we have about that damn data issue.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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