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JohnB

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Reply with quote  #1 

Model  E90DPLSDA

Serial    5119154

Need Help, my 2006 90 HP  died returning to dock after several hours of afternoon fishing.

Turns over well, however will not fire.  The four LEDS on the EMM do light during cranking.

The Diag software shows three errors log at what is believed the time of failure.

Code 81 cylinder  # 1 ignition primary open circuit detected

Code 82 cylinder  # 2 ignition primary open circuit detected

Code 83 cylinder  # 3 ignition primary open circuit detected

I can find no spark (timing light) during cranking or with the static ignition test.

During cranking a snapshot with the the diag laptop tool shows

RPM =340      System Voltage=30       Ignition Voltage 292

From the Service manual the 30 volts looks correct for the RPMs indicated – not certain.

My question is an Ignition Voltage of 292 Volts looks a lot higher than the 200 V shown for running at normal rpms. 600 +

I have checked the path from the EMM to the coils and the coil resistance checks and they look good.

Any suggestions as to where to look from here would be much appreciated.


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olypopper

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Reply with quote  #2 
Attach the timing light to your injector wires and see if the emm is firing injectors or not.
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steelhead

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Reply with quote  #3 
Check the common ignition coil EMM ground wire point at the bolt on the bottom coil for broken wires or loose corroded bolt.  The 3 separate EMM ignition grounds run from EMM connector J1-B pins 11, 17, 24 to this point.

Clean bolt and use thread locker on bottom threads.
JohnB

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Reply with quote  #4 
Thanks olypopper, I did not check the injectors with the timing light, however the Diag Static test does result in a loud series of clicks as each injector is selected !
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John
JohnB

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Reply with quote  #5 
Steelhead, Thank you for a vary thoughtful reply,
I will check the bolt for any corrosion and tightness, I did a ground check on EMM connector J1-B pins 11,16, 17 and 24 to the engine housing and they each had a good 0 ohms reading.. Not sure why there are 4 grounds listed in the service manual for the I3 ETEC.

I do not like the thought, however, Is anyone aware of an EMM failure that resulted in a loss primary ignition / Spark to all cylinders ?

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