ECM connector plug disassembly?

Hi wmilby,

Thank you for the donation and sorry for the delay in replying.

I am not sure if I understand your question correctly so will need some confirmation.

You wish to replace one or more of the connector terminals? Am I correect?

Hi, KHlow. What I was looking for was how to remove a single terminal from a large connector plug that plugs into the ECM. It's a tiny female terminal that slides onto a pin terminal on the ECM. That type isn't covered in the .pdf manuals I can find. I have since been able to remove it (with a flattened-tip paper clip), but the problem NOW is that it's so tiny I can't even see how it's made, in other words if it is making good contact. I have a check engine light code P0135 (Oxygen sensor heater performance). I have replaced the sensor, checked the 4-wire plug at the sensor, and am trying to check the connection to the ECM of the return wire from the heater. If you had anything about that type terminal (picture, description) that would tell me how it makes a good internal connection, how to adjust it (with a pin maybe), if it's possible to adjust it, etc, that would be a big help. Thanks.

These terminals are minute and do not use high currents so the normal contacts need not be very tight and are spring loaded.

Unless they have been damaged, there is no necessity to tighten them. A paper clip, not the large type, is a good tester, use one end to push into the terminals and if resistance is felt, the contact should be good.

If there are no signs of contamination, there should be no problem with the contacts.

So far, what have you test for the problem?
Do you have the diagnostic procedures?

Thanks, KHLow, I think i've got it now. The paper clip test tip was helpful.

You are welcomed and glad to be of service.

Thank you for using 2carpros.