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Key On Engine Off self test - Injector buzz test

Posted: Tue Apr 12, 2022 8:34 pm
by NathanSA
Hi,

Who has done the Key On Engine Off self test on their Rangers?

In this Youtube clip by Abandoned Automotive:


During the test it buzzes the injectors one by one on his PX1 2.2.

I tried the test on my PX2 2.2 and very little happens that i can see( or hear) besides the glow plug light comes on and the lights flash as the module resets.
All done in about 20 seconds and passes 100% but does not do the buzz test.

I'd like this to work to potentially help me isolated my tapping injector.

Re: Key On Engine Off self test - Injector buzz test

Posted: Wed Apr 13, 2022 8:02 pm
by saeb
No idea and never tried it.

Keep in mind PX2 uses piezo injectors which are different to PX1 injectors and unknown if this makes any difference.

Re: Key On Engine Off self test - Injector buzz test

Posted: Thu Apr 14, 2022 11:33 pm
by NathanSA
I contacted Forscan team and they added it to a test build as a separate test.
Injectors get buzzed successfully.
It is just difficult to tell which injector is getting activated and they can't tell me the sequence.

Re: Key On Engine Off self test - Injector buzz test

Posted: Fri Apr 15, 2022 6:04 am
by Bala1
Have you tried using a stethoscope?

Re: Key On Engine Off self test - Injector buzz test

Posted: Sat Apr 16, 2022 7:20 pm
by NathanSA
Had a chance to check with my stethoscope yesterday.
Appears to be 1-2-3-4-1