MEP 803 A tripping CB3

[Guyfang]

We need to look at all the things that get power in Startup. Maybe start with K2? Pull the wire off of K2, and see if its something NOT in the Starter circuit? Or G1? See if the alternator is shorted?

 

[kloppk]

Sorry for the slow reply. Helping 4 people simultaneously with generator issues around the US this evening.
The START voltage signal comes from S1-7 and goes to TB5 terminal 14. In total terminal 14 will have 4 wires on it. Two on the top screw and two on the bottom screw.
The wire numbers for the 4 wires on TB5-14 are...
140A From S1-7
140B to K12-8 (feeds the Starter circuit)
140C to K15-A (feeds the Flashing circuit)
140D to the diagnostic connector on the outside top left.

Try disconnecting all wires from TB5-14. See if CB1 still pops.
If it doesn't then reconnect wire 140A to TB5-14 and see if CB1 pops.
If it doesn't then reconnect wire 140B to TB5-14 and see if CB1 pops.
If it doesn't reconnect wire 140C to TB5-14 and see if CB1 pops.
If it doesn't reconnect wire 140D to TB5-14 and see if CB1 pops.

 

[kloppk]

Last post was updated so be sure to refresh

 

[jaybird67k]

The START voltage signal comes from S1-7 and goes to TB5 terminal 14. In total terminal 14 will have 4 wires on it. Two on the top screw and two on the bottom screw.
The wire numbers for the 4 wires on TB5-14 are...
140A From S1-7
140B to K12-8 (feeds the Starter circuit)
140C to K15-A (feeds the Flashing circuit)
140D to the diagnostic connector on the outside top left.

Try disconnecting all wires from TB5-14. See if CB1 still pops.
If it doesn't then reconnect wire 140A to TB5-14 and see if CB1 pops.
If it doesn't then reconnect wire 140B to TB5-14 and see if CB1 pops.
If it doesn't reconnect wire 140C to TB5-14 and see if CB1 pops.
If it doesn't reconnect wire 140D to TB5-14 and see if CB1 pops.

It will probably be Monday before I can fool with it since I'm busy tomorrow. Thanks Kloppk for the detailed instructions.
I'll keep you updated. Is there anyway I can get a moderator to change the thread title to cb1 instead of cb3 ?

 

[kloppk]

@Guyfang can you change the thread title for the OP?
When Guy has a minute, I'm sure he'll update it for you.

 

[jaybird67k]

@Guyfang can you change the thread title for the OP?
When Guy has a minute, I'm sure he'll update it for you.

Thanks