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Old 08-27-2022, 10:02 AM   #1
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Engine Brake Rocker Switch

Jake Brake rocker only works on low side. Searching Carling Technologies website by part #L26D1 shows 81 choices 😳.

Switch has 9 spade connections, (pics attached).

Anyone have experience trouble shooting this switch?

I have power at the switch with key on. Does engine need to be running to test the switch?
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Old 08-27-2022, 04:31 PM   #2
"Formerly Diplomat Don"
 
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The engine brake shuts down below 15mph. I don't know if you can test it while stationary. Those switches rarely go bad. I'm thinking you may have an issue with the engine brake electronics. A cheap check before taking it to a shop, buy a new switch from Carling, usually about $25.00.
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Old 08-27-2022, 05:58 PM   #3
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Quote:
Originally Posted by Dutch Star Don View Post
The engine brake shuts down below 15mph. I don't know if you can test it while stationary. Those switches rarely go bad. I'm thinking you may have an issue with the engine brake electronics. A cheap check before taking it to a shop, buy a new switch from Carling, usually about $25.00.
Thanks for the input Don, that’s my thought as well. Inexpensive way to eliminate switch from the list of suspects.

With 81 versions of L26D1 I will need a more definitive part # before I order one. 9 spade connections should narrow it down a bit.

I lost the high side of the switch while underway. I experienced a momentary electrical glitch just a few seconds. All warning lights came on,buzzers sounding off, cruise and Jake disengaged, engine stayed on line. Moments later all warning lights, buzzers went back to normal. Was able to engage cruise again. Incident triggered CEL which went out after a shutdown and restart. Only system not working now is high side of engine brake.
All fuses marked engine brake are good, haven’t checked the 3 relays yet, can’t get them loose!��
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Old 08-27-2022, 07:19 PM   #4
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Try DidgiKey I think I spelled it correctly. The rocker part of the switch is easy to change.
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Old 08-28-2022, 12:06 AM   #5
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You might just want to order it from Newmar as they should know the exact switch number, even though it may be a few bucks more.
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Old 08-28-2022, 12:49 PM   #6
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You might just want to order it from Newmar as they should know the exact switch number, even though it may be a few bucks more.
I couldnít locate it on the Newmar website parts catalog. Will call them tomorrow.

Thanks for your help!
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Old 08-30-2022, 06:07 PM   #7
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Newmar had one in stock!

Ordered today. Thanks to all for the help. I am not confident the switch is the issue but worth $36.00 to find out.
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