Inconclusive troubleshooting no spark - 2004 Mercury 2-stroke 200XL SWB

teakironwood

Recruit
Joined
Jun 16, 2021
Messages
3
Engine cranks but no spark. All 6 CDMs check out fine. Stop circuit checks out fine. Having difficulty determining if it's the stator, trigger or control module. Appreciate any help with this. Here's the info:

TRIGGER
Target resistance 1100-1400 ohms. Measured resistance 2000+ ohms.
DVA target 4V. Measured DVA 3.5-4.0 volts

STATOR
Target resistance 380-430 ohms. Measured resistance 180-250 ohms.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,932
Highly unlikely the trigger failed on all three internal coils, need to DVA stator
 

teakironwood

Recruit
Joined
Jun 16, 2021
Messages
3
Just checked stator DVA. "Open circuit voltage at cranking should be no less than 100 volts DVA" per the service manual. My reading was 50 volts.

Also reminder that target resistance between G/W and W/G is 380-430 ohms. Measured resistance 180-250 ohms.

Perhaps there's a slight voltage leak to ground since the resistance is much lower? Anyway, does this indicate that the stator is bad? That's an expensive repair if I'm just guessing.
 
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