2001 SeaRay 340DA with MX6.2 Sterndrives: Starboard side no crank, electrically dead

MJ340DA

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Jul 18, 2017
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2
I was hoping for some help as I have exhausted all the ideas I could think of for a fix. I am moderately mechanically inclined but am stumped by this.
Symptoms:
Turn on ignition key and ignition switch in cabin panel and then try to start with rocker switch at the helm and get no sign of electrical current... no beep, no Fuel valve switch turn on noise, no crank. Starboard side only as the Port side cranks as normal. Oddly, if I hold down the bridge/crossover rocker between the port and starboard start rockers, the starboard side beeps, fuel switch turns on and it cranks. If you let go of the bridge/crossover rocker switch it is dead again. This is repeatable.

Tests and fixes tried so far:
Fully charged and tested starboard battery bank. Replaced slave solenoid on top of the engine. Checked the red button circuit breaker on top of the engine, it is not tripped. All breakers on the engine room DC breaker panel are untripped. Replaced both the starboard and port battery relays/solenoids inside the DC breaker panel. Replaced the starboard starting rocker switch at the helm. Tested by jumping the slave solenoid to "jump start or jump crank" the starboard engine and no crank, nothing.

I am at stumped! Not sure how to proceed from here. I assume since the starboard engine cranks when using the bridge/crossover switch at the helm that the engine, starter, fuel switch are all fine. I also assume that since I cannot affect a "jump crank" across the slave solenoid that the ignitions switches in the cabin cannot be the problem since they are not needed to jump crank it anyway.

Any help to find my electrical gremlin would be greatly appreciated!! Thanks so much
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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51,481
pull your test meter and start at the ignition switch - look for power on the purple wire.
 

alldodge

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Mar 8, 2009
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There should be two solenoids in the engine room, for port and starboard engines. When the switch is flipped at the helm this should energize the individual solenoids. Since you can start using the crossover, then your starboard solenoid has a bad connection or has gone out. Don't know what Searay uses but may look like this

Solenoid.jpg
 

MJ340DA

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Jul 18, 2017
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Just got back from the Boat and doing some testing with my multimeter. Went back into the DC panel in the cabin and tested the Ignition switches to be good, tested the breakers before the switches to be good but noticed the feed end of the starboard side ignition breaker is not getting 12v. So I started from the battery cable to the starter on the starboard engine which feeds 12v to the whole system and found that the 90 AMP white fuse on top of the starter is blown (reads 12v feed, 0V other side. Also noticed that the main 50 Amp (red button) breaker on top of the starboard engine is stuck in the popped position, fully out. It reads OV at both terminals. So I am replacing both the 90 White starter fuse and the 50 Amp red button breaker. I am just worried what cause this all to blow. I assume the 50 Amp red button breaker was going bad and finally died and blew the 90 Amp fuse before it in the circuit. Wish me luck!! Thanks for all the help
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,459
I would remove the Red wire from the 90A block and connect it to the starters battery terminal , That way, should the 90A blow again you will still have engine system power protected by the 50A circuit breaker
 
Last edited:

alldodge

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Mar 8, 2009
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43,398
Start by checking the alternator, its may be shorted out.
 
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