RPS1392
03-29-2008, 01:58 PM
Update ***Fixed***
So Ive got my build to this point...
Build thread:
http://www.zilvia.net/f/showthread.php?t=182565&page=3
1992 240sx with 1995 180sx Blacktop. E5 ECU.
So now I have my first issue. Harness was done by wiring specialities about a year ago. The issue is; no power or ground to ECU. Egine cranks and I got oil pressure. No bulb check at the dash was my first clue. No CEL, and no lights on the ECU. Fuel pump does not prime with initial key on. When I checked the black/white wire pictured, with a 12v test light, I had the ECU relay click, so I am assuming I supplied the ground to the relay. I been searching for a E5 Ecu pinout, but cant find one, and I am not sure what redtop one is the same.
Checked the ECU and Fuel pump fuses
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3684.jpg
Got power at the ECU Relay
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3685.jpg
Checking the plugs and the wires at the body to engine harness connection.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3686.jpg
Checking the black/white wire at the Body to Engine harness plug.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3687.jpg
Current stage of build.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3683.jpg
***UPDATE***
Ok, I just went and verified the ground points that I know of with a volt/ohm meter. all had continuity to ground. I need to move my alt. ground off the intake manifold to the alternator, but I dont think that would make any difference.
Firewall ground
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3690.jpg
upper rear manifold ground
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3689.jpg
lower front manifold Main battery ground point
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3688.jpg
Right side fuse and relay box ground?
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3691.jpg
***UPDATE***
So after finding a pinout (thanks PLX devices) Ive verified that ive got ground and constant 12v to the ECU plug, What I dont have is Swithced Power. Ive verified that the Black/Red from ignition to the ECU and FP fuses is good and those fuses are hot with the ignition on. I know from the electrical diagram, that after the ECU fuse the switched power wire is Black/white. When I back probe the body to engine harness black/white (pictured above) my test light lights up and the fuel pump runs ????. Anyone got any ideas??
So Ive got my build to this point...
Build thread:
http://www.zilvia.net/f/showthread.php?t=182565&page=3
1992 240sx with 1995 180sx Blacktop. E5 ECU.
So now I have my first issue. Harness was done by wiring specialities about a year ago. The issue is; no power or ground to ECU. Egine cranks and I got oil pressure. No bulb check at the dash was my first clue. No CEL, and no lights on the ECU. Fuel pump does not prime with initial key on. When I checked the black/white wire pictured, with a 12v test light, I had the ECU relay click, so I am assuming I supplied the ground to the relay. I been searching for a E5 Ecu pinout, but cant find one, and I am not sure what redtop one is the same.
Checked the ECU and Fuel pump fuses
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3684.jpg
Got power at the ECU Relay
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3685.jpg
Checking the plugs and the wires at the body to engine harness connection.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3686.jpg
Checking the black/white wire at the Body to Engine harness plug.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3687.jpg
Current stage of build.
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3683.jpg
***UPDATE***
Ok, I just went and verified the ground points that I know of with a volt/ohm meter. all had continuity to ground. I need to move my alt. ground off the intake manifold to the alternator, but I dont think that would make any difference.
Firewall ground
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3690.jpg
upper rear manifold ground
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3689.jpg
lower front manifold Main battery ground point
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3688.jpg
Right side fuse and relay box ground?
http://i76.photobucket.com/albums/j11/yesd0g/Project%20240/DSCN3691.jpg
***UPDATE***
So after finding a pinout (thanks PLX devices) Ive verified that ive got ground and constant 12v to the ECU plug, What I dont have is Swithced Power. Ive verified that the Black/Red from ignition to the ECU and FP fuses is good and those fuses are hot with the ignition on. I know from the electrical diagram, that after the ECU fuse the switched power wire is Black/white. When I back probe the body to engine harness black/white (pictured above) my test light lights up and the fuel pump runs ????. Anyone got any ideas??