General Boards > Technical Support

Starting issue

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Fred Brooks:
  That is the solenoid that turns the 12 volt power inside the coach. There is a switch at the entry door dash or consol. It is referred to as the salesman switch as the original purpose was to show off the interior to a prospect and then turn off the batteries when done. BTW that trigger solenoid is on the backside of the battery box. Fred

Brian Miller:
Ok, I’ve crawled all around underneath and around the battery compartment.  There is no solenoid that I can see behind the battery compartment.  I did find another on the left outside the battery compartment.  It’s hidden behind the left side battery box itself. 
Could this be the solenoid I’m looking for??

Eric Maclean Co-Admin:
Brian
That is the right location.
There should be a. Sealed Relay in that area as well the relay is the ECM power relay.
The solenoid should be a regular shaped solenoid with two large terminals and two small terminals the start trigger signal to the starter is supplied by connecting the two large terminals.
A simple jumper wire across those two terminals should cause the starter to engage and verify you have the right solenoid.

Eric

Eric Maclean Co-Admin:
Brian once you have verified t the at you are working with the start trigger solenoid you can now verify the start signal to it.
The solenoid is an isolated ground solenoid meaning the coil inside is isolated from ground
One of the lead wires has to provide ground and the other should have a start signal whether it is from the rear run / start switch or the front ignition switch
In either case the start signal comes through that rear run switch. You should be able to diagnose this with a test light.
The most likely cause of an intermittent no start in this area would be either a lose of ground for the solenoid trigger coil or a bad connection in that rear run switch.

Erc

Brian Miller:
Gentleman,
Good evening, after a long search I found the culprit solenoid. It was on the left hand side of the battery compartment between the sealed relay as well as the ecm hidden behind the transmission service hose.  (The wx has been demanding outside )  I had enough cable to relocate to another location.
 Good news! Job complete…..started right up this morning @ 19degrees.
Thank you all for your expertise and guidance.

Merry Christmas and Happy new year!

Brian

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