Tried swapping open-circuit relays 5 I had on my box they all worked with the jumper wire between the load side power.
Re-checked power on load side it was on. The control side power came when key was on position.
Then test-light to battery positive tested for ground side, the load side ground lit the test light.
The control side ground did not light up the test light.
No ground on control side. Is this computer transistor that blow out?
Then check the red green wire at the computer while connected with key in position no power dead even while cranking it feeds control side of relay. Check adjacent black; red; white; yellow no power.
Checked fuse panel under dash all fuses okay 2 ign one feeds EFI relay checked black wire no power all fuses okay.
How do I check a transistor with test light on computer side? If car starts when jumper wire is in place does it mean the computer is find and that I have to use a short finder or an amp probes on the harness which I do not have?
Confused I still have not confirmed the correct open circuit relay computer when it see air coming in through air flap it sends power to fuel pump.
This car had an after market alarm I never knew about it shut the car down one year ago when I accidentally hit a shut off switch bottom of kick panel. Who ever wired it had a floating 5 prong relay above steer column spliced into ignition wire. They may have used a one pole one contact type yet the car starts when jumped.
In attempting to diagnose the cars relay one year ago I use the wire wrapped to each terminal of open circuit relay I may have crossed the low control side with the high load side I don't know if I had damaged computer yet the car starts when jumper wire is inside load terminals.
I have never been so beaten up this car issues with fuel pump; alternator seized; TCM module shorted out interlock switch stuck in park; the neutral safety was old and contacts not touching properly seized on to the shift rod stem on the transmission, it broke had to weld it back on later. Now the brake master cylinder needs replacement pedal sinks all the way down; check vacuum valve its good. The booster seems to be good it has vacuum hear air entered booster when I pulled out the check valve made an air sound.
Bob Bishop alpasentory/galaxy
Tuesday, March 2nd, 2021 AT 9:32 AM