ECU / Unit Control / Injector Troubleshooting

[Cyrano]

you understand this is a switch? Operated by a cam in the distributor

Yes indeed! ;-)

We made 2 different tests to verify it is working properly:

• 1st test: we disconnected the connector from the distributor and make the engine turn using the starter. We used a small diode with low voltage connected to pin 12 and pins 21/22 and observed the diode blinking while the engine was turning (alternatively on 12-21 and 12-22, which shows that circuit is being closed alternatively by the distributor contact cam).
• 2nd test: similar to the above but with the full wiring up to the ECU connector. In that cas, we used a multimeter to observe open/close contact alternatively between pin 12-21 and 12-22.

That screw should have 1.5 threads showing at the bottom- no more and no less

I'll check how much there is.

 

[sfdon]

The E9 forum has a Parts library loan program

If you want, I can send you a package with a different manifold pressure sensor a TPS trigger points and a computer as a loan

I do ask for loan packages like this to come back in a timely basis for others to use