05 Pete c13
Truck is brake to Jake via computer which was working fine cruise worked high idle.
now it jakes no matter what all cruise functions are gone
brake lights are not stuck on jolly valve and brake u can hear switch activate.
clutch and throttle still disengages jake
all switches appear to be functioning but the truck thinks the brakes are being applied why Jake is on without brake and no cruise
any thoughts?
No Jake or cruise, no switch stuck?
Discussion in 'Peterbilt Forum' started by OFT2024, Apr 23, 2024.
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Check your jake on/off switches/wires. Obviously if throttle and clutch disengage it, its just getting a constant signal to be on, but its not on the ecm (engine harness) to solenoid side
Deere hunter Thanks this. -
I would definitely check the clutch switch first.
flood Thanks this. -
because if the Jake is on and I bump the clutch it kicks off the Jake so in theory it’s working unless it sends more than one signal? -
I might be a little confused, I thought you said the Jakes and Cruise did not work. Maybe I'm not understanding this correctly, but how do you know the clutch switch is kicking them off if they're not working.
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now with the Jake on it just works how most trucks would. (Ecm thinking brake is being applied 24/7 imo) and no cruise
bump the clutch it kicks the Jake off -
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With jake brake switch on
With cruise OFF
No brake application
The jakes kick on when you release clutch or fuel pedal.
This is in fact a correct way for this to work.
With jake brake switch ON
With cruise ON
WITH brake application
The jakes kick on when you release clutch or fuel pedal.
This is also correct.
With jake brake switch ON
With cruise ON and SET
No brake application
The jakes kick on when you release clutch or fuel pedal.
This is wrong
You need to list the states that occur to turn on or off the stated items to show PRECISELY what it is you think is happening incorrectly. Because i really cant tell what you mean, i was taking a stab at what i THOUGHT you meantLameMule Thanks this. -
#2 this is how it was operating normally
#3 no cruise will NOT engage at all. Jake operates with throttle and clutch released regardless of cruise switch position
Jake on
Cruise on
No brake applied
Jake engages with the release of throttle
And clutch
Cruise will not set with Jake position on or off
Cruise indicator is lit on dash showing it’s on
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