PGM FI main relay

1990 HONDA ACCORD
16,100 MILES • 4 CYL • 2WD • MANUAL
Avatar
SJGMCC
  • MEMBER
  • 1 POST
The 10 amp ECU fuses has blown twice, after I turn the key on . The Fusae # is #28 in the under the hood fuse box. In the Hayes repair manual the wire path is showing it goes to the PGM FI main relay. A service tech is telling me the ECU computer is bad. Where is the PGM FI main relay. Also, using the neg battery terminal disconnected, with a volt meter, one lead to the neg post and one lead to the neg cable(ground) I had 12 + Volts at the meter. I pulled each fuse to isolate the short and found no fault in any circuit.???? What should I do next? also the car won't start there is no spark at the plugs.
Sep 22, 2008 at 2:53 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Also, using the neg battery terminal disconnected, with a volt meter, one lead to the neg post and one lead to the neg cable(ground) I had 12 + Volts at the meter Did you make sure nothing is On that can create current draw? It shouldn't give 12volts-you have a short somewhere. Disconnect the alternator and see what happens to the voltage. The PGM-FI is located behind driver's side of instrument panel, left of steering column-see below


https://images.2carpros.com/forum/automotive_pictures/12900_pgmfi_relay_2.jpg

Mar 28, 2017 at 8:15 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.