Ohming the injectors from the harness connector

[elwesso]

I think DAEDALUS posted this but Im not sure..... Ive tried it and I cant get it...

Could someone tell me how to?? I know you can, its the harness connector on the bottom I think.....

[Q45tech]

We make a harness adapter from old junk Q connectors.Takes two plugs as the 8 injector returns [to ecu] are in one connector and two [4 each] +12 v feeds for each bank are in another connector.

Color coded common + 4 injectors, then another color for the other bank...............gets difficult to probe the connectors with just two hands without adapter.

I realize most of you don't have junk cars to get the harness from to make the adapters..........something to think about at junk yards.

[hh11011]

Unplug injector harness to use ohm meter to check each injector. Attach one probe of the ohm meter to the + battery post use the other probe to touch each wire from the "injector side" of connector.No other plug necessary.Looking at "injector side" connector the configuration is: 1-7-6-48-3-5-2

[elwesso]

Thank you HH..... I will try that.....

Much appreciated!

[Q45tech]

But that way you are measuring the external to harness wiring and fuse to battery..............good enough I guess but expect a few more tenths of ohms [even 0.5] than the injector true resistance at the connectors.

But then again many low cost VOM are not very accurate at 12 ohms [function of their internal battery condition].

[elwesso]

Basically I am going to inspect another Q and I just need the general idea..... Mainly if a certain injector is GOOD or BAD....