what are the minium connections to start th ECU?
02-01-2006, 09:22 PM
#3
3.0 BAR
Join Date: Mar 2003
Posts: 21,479
Re: what are the minium connections to start th ECU?
Originally Posted by Sinner
the fuel pump is turns on for a second, would it do that if the ecu was dead?
Nick
Nick
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
------- gay wires when they get old
02-03-2006, 03:36 PM
#7
3.0 BAR
Join Date: Jul 2003
Posts: 6,449
Re: what are the minium connections to start th ECU?
It only needs one power and ground to boot up.
I have come acrossed a few ECUs that just wont prime the fuel pump for some reason...not sure why it happens or what fixes yet. When I do...I have about 4 or 5 ECUs sitting here that will be fixed though finally
I have come acrossed a few ECUs that just wont prime the fuel pump for some reason...not sure why it happens or what fixes yet. When I do...I have about 4 or 5 ECUs sitting here that will be fixed though finally
02-04-2006, 06:49 PM
#8
1.0 BAR
Join Date: Jan 2005
Posts: 425
Re: what are the minium connections to start th ECU?
Originally Posted by xenocron
It only needs one power and ground to boot up.
I have come acrossed a few ECUs that just wont prime the fuel pump for some reason...not sure why it happens or what fixes yet. When I do...I have about 4 or 5 ECUs sitting here that will be fixed though finally
I have come acrossed a few ECUs that just wont prime the fuel pump for some reason...not sure why it happens or what fixes yet. When I do...I have about 4 or 5 ECUs sitting here that will be fixed though finally
lol
actually check out the big main caps, they are the main filtering caps for the ecu, most of the time one of them has chewed through a trace. You can put a new one in and jump the pins.
02-05-2006, 10:14 AM
#9
3.0 BAR
Join Date: Apr 2003
Posts: 2,260
Re: what are the minium connections to start th ECU?
OBD0 has two ground and *TWO* 12v to power it on... and seeing as though OBD0 to OBD1 conversion harnesses use all of the A plug, I would ASSume (without having checked a wiring diagram) that OBD1 would do the same.
The A plug is where things would have to power the ECU on. I did this to test them to make sure they didn't get a solid CEL when chipping ECUs for people. So that works as the "minimum requirements to power on an ECU".
The A plug is where things would have to power the ECU on. I did this to test them to make sure they didn't get a solid CEL when chipping ECUs for people. So that works as the "minimum requirements to power on an ECU".
02-05-2006, 01:04 PM
#10
3.0 BAR
Join Date: Jul 2003
Posts: 6,449
Re: what are the minium connections to start th ECU?
Originally Posted by TurboEF9
OBD0 has two ground and *TWO* 12v to power it on... and seeing as though OBD0 to OBD1 conversion harnesses use all of the A plug, I would ASSume (without having checked a wiring diagram) that OBD1 would do the same.
The A plug is where things would have to power the ECU on. I did this to test them to make sure they didn't get a solid CEL when chipping ECUs for people. So that works as the "minimum requirements to power on an ECU".
The A plug is where things would have to power the ECU on. I did this to test them to make sure they didn't get a solid CEL when chipping ECUs for people. So that works as the "minimum requirements to power on an ECU".
