ECM power supply lost with ignition turned on...
02-15-2018, (Subject: ECM power supply lost with ignition turned on... ) 
Post: #9
RE: ECM power supply lost with ignition turned on...
I usually see 1117 caused by:

- Weak batteries as explained by ZeroNTheDark
- High resistance between batteries and the 4 pin connector @ ECM
- Drivers turning off the battery isolator as soon as they turn the engine off.

Anything that effects unswitched power to the ECM or disrupts it's powerdown cycle will give this code.
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 Thanks given by: Wiseman , Rawze , Meatbag , hhow55


Messages In This Thread
RE: ECM power supply lost with ignition turned on... - Signature620 - 02-15-2018



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