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Injector problem - ECU pins 9 and 18? 900 1992

posted by  ken944 on  Fri Jul 24 10:02 CST 2009
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last visit: Tue Sep 17 11:06 CST 2013
[RELATED]

Art,

That's a beautiful thing.

Just came back from re-testing.

Separated the white plastic connector block beween the rsr relay and the ballast block and connected two jumpers: one to the gray power lead from the rsr relay to the ballast and one from the ballast to each of the injector leads in sequence. I pulled the plugs on the injector and inserted a voltmeter to the power side of each plug. Readings were 12.7 volts per injector when cranking only (I jumped the battery when making the tests).

Confirmed all plugs fired using a set of test lamps attached to the lead and the plugs.

Retested pin 1 ECU and as you note, voltage fluctuates around 6 volts.

If I correctly understand your test at ECU-18, if pulsing was present wouldn't this determine the ECU was OK as far as its portion of the injector circuit was concerned?

Ken






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