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I am confused here.
I have a M923A1, when I pull out the button on the dash for the spring brake, it sets the brakes and the truck will not move. When I start the truck and after the air builds up to pressure, I push in the button to start driving. When I push in the button the spring brake override light comes on and a very quite buzzing starts coming from the failsafe warning control module.
Question 1. Why does the spring brake override light come on when I push the button in to release the brakes and drive the truck.
Question 2. Why does the buzzer start sounding when I push the button in to release the brakes.
Question 3. Could the spring brake pressure switch in the dash behind the switch be bad, or could the wires be reversed?
Does not seem right that the red light on the dash stay on the entire time I am driving.
Read the TM's and it does not state what the correct way is.
Should the light go off when I push the button in?
I have a M923A1, when I pull out the button on the dash for the spring brake, it sets the brakes and the truck will not move. When I start the truck and after the air builds up to pressure, I push in the button to start driving. When I push in the button the spring brake override light comes on and a very quite buzzing starts coming from the failsafe warning control module.
Question 1. Why does the spring brake override light come on when I push the button in to release the brakes and drive the truck.
Question 2. Why does the buzzer start sounding when I push the button in to release the brakes.
Question 3. Could the spring brake pressure switch in the dash behind the switch be bad, or could the wires be reversed?
Does not seem right that the red light on the dash stay on the entire time I am driving.
Read the TM's and it does not state what the correct way is.
Should the light go off when I push the button in?
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