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Old 03-05-2005, 06:54 PM   #1 (permalink)
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voltmeter ECU usage?

Voltmeter?
I can check a lot of things on the ECU using my volt meter but...
For instance the factory manual shows the Main oxegen sensor and the symbol is ox1 so do I stick the neg- probe in the ox1 and the positive in B1 or B? B1 and B are listed as EFI main relays. Its confusing since the diagram shows the +pos probe going into the B1 and the B.
Come to think of it where is the ECU located in the '91 celica?
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Last edited by speedyts49; 03-05-2005 at 06:56 PM.
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