PREVOST H3-41 Maintenance Manual page 202

SECTION 06: ELECTRICAL
Isolate the front from the rear
Take one of the termination resistors in the MAIN POWER COMPARTMENT.
Disconnect C1 and connect the termination resistor to C1 pin housing.
If all the front modules respond normally, the short circuit is in the rear portion.
Isolate the evaporator module from the network
Disconnect C100.
No need to connect a termination resistor there since C100 is a stub connection.
If the short circuit problem is in the evaporator panel, all modules except AE54 will respond normally.
38 PA1621 Maintenance Manual All Series | Revised Sept 2019