Any emergency doors or hatches open? Have you been trying to eliminate wiring? The newer busses are equipped with interlock systems that set off alarms and/or will not start or release brakes if any doors or hatches are open. Likewise, if you try to circumvent these systems it can cause the same result.
If you have a wheelchair lift model, the outside door must be fully latched to disengage the parking brake. There is a micro switch in the lock receiver. No alarm will sound (like the roof exits do) just no brake release.
This system cuts off the pressurized air supply to the yellow plunger with two solenoid valves under the hood near to top of the firewall (or under the floor in my case).
I have a similar issue! Help! �� I have disconnected the emergency doors and windows, I thought I had ground all the wires, Gracie started, but now the parking brake is locked on! Any ideas of how to bypass that?! ����
I checked the post above and connected with Pizote, they suggested removing the parking brake solenoid, only, of course, I don’t have the same year bus so I’m not sure Where that part is.
I just resolved a similar issue with my 2008 ce200 international. The solenoid to the two air valves was seeing 12v on the ground side. One quick wire to a ground on the bus and now it works like new!
I just resolved a similar issue with my 2008 ce200 international. The solenoid to the two air valves was seeing 12v on the ground side. One quick wire to a ground on the bus and now it works like new!
I think I have a ground issue as well. Could you give a little more detail where to check for this wire?
I think I have a ground issue as well. Could you give a little more detail where to check for this wire?
I’ll try to make it out to my bus in the next week to get a picture. There’s a post somewhere on this site that I haven’t been able to re-find with a semi detailed pdf drawing. On my bus in the engine bay on the drivers side connected to the cab are 2 silver pieces with airlines tee-ed to them. There’s a solenoid with 2 wires connected to them. That wire was checked with a multimeter and I saw hot on both sides. So I connected the ground side to a ground on the bus and the function returned. I’m not sure if this has any negative effects with other alarms but everything seems to be working.
Linear Mode
