Mercury Black Max V6 135 - 1993

by David
(United Kingdom)

Hello - my engine starts and runs fine, however, when turning the key at start, I do not get any warning beeps. I have checked the warning beep is working at the controller end, i.e. it makes a noise and besides the controller is brand new. Is my problem the ECU? looks like there are two. Anyone know how to check these are working or why there are no beeps at all.

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