Thread: w114 no start
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Old 03-20-2015, 01:35 PM
meltedpanda's Avatar
meltedpanda meltedpanda is offline
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Location: Central Ky
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Djet system

All resistance checks must be conducted with the ignition off.

Injectors:
Individually check ECU harness pins 3, 4, 5 and 6 to ground. Resistance should be less than 25 ohms, but not zero. NOTE: The ECU powers the injectors with a 3V signal lasting between 2 and 5 milliseconds. This signal cannot be measured with a meter; don't try.
Trigger Points:
ECU harness pin 12 to 21, then pin 12 to 22 = near 0 ohm continuity on one set, open on the other. Rotate engine 360 degrees and test again. Readings should be opposite.

and I suspect you have checked all fuses and fuel start relays?
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