Medium and Heavy Trucks
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yes jake is not working
serial # ***** *****
does the clutch switch get power from computer
so the switch for on and off and clutch just are a ground to ecm
clutch switch is working and the throttle pedal is working to show on my computer . computer shows the jake is disabled
yes on throttle pedal and I cant see switchs
do you no the number for the ecm for the jake switch wires I think they are 23 and 40 but not sure
Yes sir. You are correct. They are pins 23 and 40.
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I have 2 switch in cab one for on and off and one for low -mid- high and they should just send ground to ecm
Yes that is correct.
When it's on low it should send ground to pin 23 to turn on Jakes for 3 and 4. When it's on medium it sends ground to 40 to turn on Jakes 1,2,5 6. When it's on high it sends grounds to 24 and 40 and turns on all of the jakes.