General Boards > Technical Support

Immediate starter engagement

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Brian Miller:
Eric,
I’ve been diligently working to resolve my 2000 Beaver Patriot, cat 3126 start issue.
Replaced starter after the starter wouldn’t disengage. Replaced solenoid in electrical bay. Additionally, replaced solenoid adjacent to battery compartment.
Now, all we have is just a click as the ignition switch is turned to the start position.
Any ideas would be greatly appreciated.
Thank you

Frank Bergamo:
Where is the click coming from when you turn the key? The starter, ignition solenoid, key switch???

Joel Ashley:
After all the work, make sure your chassis batteries are still fully charged, and/or use the boost switch on the dash to have the house set assist.

Frank Bergamo:
Also, while you are at it, make sure all battery cables are clean and tight!

Eric Maclean Co-Admin:
Brian
Check at the primary start / trigger solenoid ( the one in the back of the battery bay ) to see if you are getting a start signal headed to the solenoid on the starter.
You may want to use a jumper wire to bridge between the two larger connections on that primary /trigger solenoid to verify whether or not the new starter will crank
In order for the starter to operate the transmission control module ( TCM) must be active and showing the transmission in neutral to allow a start trigger signal to pass ,that signal is the sent to the rear run control switch where it is passed on to the start trigger solenoid . The start trigger solenoid is used as a relay to operate the starter solenoid.
The trigger solenoid will have two larger terminals one of these will be hot all the time with battery voltage , and the other large terminal will be connected directly to the starter solenoid to activate the starter. By jumping across these two large terminals the starter should operate if it doesn't you have a wiring issue or a faulty starter.
If on the other hand it does operate the starter by connecting the two larger terminals it would indicate the trigger solenoid is not doing its job .
The trigger solenoid is an isolated ground solenoid meaning the coil that operates it is isolated from the case or internal connections,
This type of solenoid has two smaller terminals one of which must be connected to a good ground and the other is the trigger wire.
If the solenoid does not operate check the two terminals to see if you are getting a good ground on one and a trigger voltage on the other when the key is turned to the start position.
The trigger signal for that solenoid comes from the rear run switch ( which can sometimes be problematic)

How ever if as you state you get an audible click at the trigger solenoid and the starter does not operate.
First check that you have 12 volts at one of the trigger solenoid larger connections if so try to jump a cross those two large terminals if it doesn't crank.
Check your wiring at the starter it is possible you have inadvertently connected one or more of the smaller ground or feed wires to the wrong terminal on the back of the starter when you replaced it.

On the other hand if your audible click is at the starter it is possible the starter solenoid/ pinion depth is set too deep and not allowing the starter solenoid to complete the starter circuit. ( Bad starter rebuild )

Page 18 of the 1996 Patriot wiring diagram in the coach assist library shows the starter wiring circuit to help you understand the power path .

Eric

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