What I have tried so far: I think my ECM is causing the excessive drain. There are 2 connectors on the ECM. When I disconnect the smaller one, no change in amp draw. When I disconnect the larger one amp draw goes away. This is the one that powers the ECM from the battery.
I disconnected everything that the wires from the larger connector goes to through either the up-line connector (C455) for most of the wires, the oil pressure sender, fuel pump relay, disconnecting the TCC Control, E cell timer module, MAP Sensor, TPS, courtesy timer and all fuses. Still have 0.5 amps. I checked for voltage on the C455 connector after it was unpluged and I am getting some voltage on a couple wires which I do not think I should have.
Can my ECM be bad and causing the amp draw?
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
I have not tried to start or run the car since the switch. I just pulled the ECM, switched the Prom and plugged the one connector back in to the new ECM to see if I had any draw. Still have quite a few things to hook back up to verify this resolved the issue. Did not consider the PROM. I am assuming once I start the car everything will still be ok (no draw) and the PROM will recover all the information needed. Anything special I need to do since I pulled and switched the PROM?
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"