Need 1985 Code 54 help !

[Slingshot]

I have a 1985 with the CHeck Engine light on.
I have replaced the fuel pump relay switch and the fuel pump. I've checked all the wires and there seems to be good connection.

I'm getting Code 54 ( Fuel Pump Voltage Low Circuit) on the Control Panel.

The light will go off as long as I turn the switch off and then restart the car. The car seems to start and run fine. ...now Just this "CHeck Engine" light is aggravating.

My mechanic says it could be the ECM itself but I wonder about that. He says he can't guarantee that would fix it.

What advice can you guys give??

Should I take it to another mechanic??? Or Leave it alone until something else happens?? The car has 180,000 miles on it but still runs strong.

Thanks in advance.

[Josh Harris]

Re: Need 1985 Code 54 help !

If you're getting Code 54, the factory manual says to back probe ECM terminal B2 (2nd pin from the left in the top row of the 24-pin ECM connection, which should have an orange wire going to it in the harness) to ground with a test light with the ignition off. Turn the ignition on, and the test light should come on within 2 seconds.

If the test light comes on, the problem is either the B2 terminal on the ECM, or the ECM itself.

If the light does not come on, the problem is in the wiring between the fuel pump relay, the fuel pump, and the ECM terminal B2.

Hope this helps. Good luck. -Josh