Quote:
Originally Posted by kunbarrie
hi all a w114062 280e 110 eng jettronic injection system,has no injector pulse,all tests on mercedes test sheet ok,trigger pulse good,map sensor primary and secondary circuits and earth ok,wireing ok as all test results are at factory specs,have tried a ecu from a running car ,still no pulse,any ideas at all thanks.
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If no injector pulse, using two different ECUs, one of which is known good, one would be inclined to pursue Der Panda's question about fuses, i.e., is power actually reaching the ECU?. In W114 D-jets the power is supplied through a main relay for the injection system; it is not fused on the power circuit, but is fused on the energizing circuit (#5).