Mercury 150HP XL Stalled abruptly and will not start (No spark)

[matt7125]

I have a 2000 21FT Monark Deck boat with a Merc 150HP XL outboard that crapped out on me last week. I had been using the boat cruising mainly at idle speeds for the past few weeks (cruising canals with my son). Took the boat out for a rip last Sunday and noticed the tach jumping around a bit and couldn't really get up to full speed. After an hour into our cruise I throttled back from about half to idle and the boat abruptly cut out. I tried starting over and over and it wouldn't fire. I tried my in-line spark tester and nothing so I had to call for a tow. I really need some help in troubleshooting this beauty, Here's what I've done so far.
1. With the key switch ON I've verified no continuity between BLK/YEL kill switch harness wire.
2. Unplugged all CDM's and verified continuity between disconnected BLK/YEL kill wire and ground
3. Stator Test- Placed red lead in yellow stator lead connector/placed black lead to ground. No Continuity between any yellow leads and ground.
4. Trigger test- Tested resistance between trigger wires. Red- White, Blue - Purple, Brown - Yellow, all around 1200-1300 Ohms

I tested the Batt and it shows 12.7V without load. I placed a charger on the Battery during trying to start to see if it made a difference and still no spark with my inline tester. I have a feeling it's something silly like a bad ground, but I've tested continuity across a number of grounds and all appear solid. Any help you can provide will be much appreciated. Thanks

 

[Faztbullet]

2. Unplugged all CDM's and verified continuity between disconnected BLK/YEL kill wire and ground

If this is true it is your problem.....

 

[matt7125]

I'm sorry that was an incorrect statement. I tested for continuity and there was NO continuity on all CDM's and the disconnected BLK/YEL kill wire.

 

[matt7125]

Ok I'm still not able to get the boat to start. I replaced the trigger because I thought that was the problem. The stator is new and tests fine. I went ahead and clipped each individual CDM blk/yellow stop wire one at a time testing for spark each time to see if one of the CDM's was faulty. I tested all six and still nothing. I'm at a complete loss. The stator, trigger has been replaced. All that's left is the CDM's and the rev limit box to my knowledge. Any idea I why I'm not getting spark on any plug? I've also bypassed all the boat electronics/wiring working strictly from the outboard with a temp start switch. What am I overlooking???

 

[matt7125]

Can someone shed some light on the RPM limits stop wire is? According to the CDI Electronics troubleshooting manual the first step in troubleshooting my no spark issue is worded this way. " Cut each Blk/Yellow stop wire from each CDM Module and disconnect the RPM limits stop wire one at a time and rest starting" I don't understand what the RPM limits stop wire is? I cut each blk/yellow and tested but didn't try with the RPM limit wire disconnected. I just don't know where to find this wire.

 

[matt7125]

What are some good websites that offer online help in troubleshooting this issue? Thanks.