15
Troubleshooting Guide
RidePRO e5 will not turn on.
Diagnosis
: No LED light on top of ECU
Solution :
Check RED wire for constant 12 volts, YELLOW wire for 12 volts with key ON, and the 2 fuses in ground wires from
ECU. Also, verify that you have a good ground on the 2 ground wires.
Compressor will not turn on.
Diagnosis
A:
Check Setup Menu to ensure compressor(s) is turned on.
Solution A:
Select the box to make sure it turns red with a check mark.
Diagnosis
B:
12 volts not present at Red wire on compressor.
Solution B:
Check fuse and connections. (20 amp fuse on Thomas compressor)
Diagnosis
C:
12 volts present at Red wire on compressor but still doesn’t run.
Solution C:
Check connections between Black wire on compressor and Blue/Gray wire on ECU.
Also check FUSES in
Black wire from ECU to Ground.
Diagnosis
D:
12 volts present at Red wire on compressor but still doesn’t run.
Solution D:
The compressor has gotten hot and thermals out. The air compressors have a thermal safety built in. If the
compressor gets too hot, it will shut itself off. Let the compressor cool, it should come back on.
Compressor will not turn off.
Diagnosis
A:
Tank pressure reads 0 psi all the time or stays at the same pressure regardless of actual tank pressure.
Solution A:
1. Check harness and plugs.
2. Replace pressure sensor.
Diagnosis
B:
Tank pressure builds normally but will not reach 150psi.
Solution B:
Replace compressor.
One air spring leaks down over a period of time.
Diagnosis
A:
Leak between delivery port on valve block and air spring. ALL FITTINGS NEED SOME KIND OF THREAD SEALER.
Solution A: Air springs almost never leak. Spray all fittings with soapy water. Tighten fitting and/or remove and
replace thread sealant. Cut 1” off of end of airline and reinsert.
Diagnosis
B:
Exhaust valves leaking. Air seeps past exhaust valve and out exhaust port.
Solution B:
Usually caused by debris stuck on valve seat. Inflate and deflate several times or disassemble valve. Information
about servicing the valves can be found at:
https://www.ridetech.com/tech/solenoid-valve-service/
One air spring leaks up over a period of time.
Diagnosis
A:
Inflate valves leaking. Air seeps past inflate valve and into air spring.
Solution A:
Usually caused by debris stuck on valve seat. Inflate and deflate several times or disassemble valve. Information
about servicing the valves can be found at:
https://www.ridetech.com/tech/solenoid-valve-service/
The 2 front or all 4 air springs leak down over a period of time.
Diagnosis
A:
Check tank pressure. There is a leak in the supply side of the system. This could be at the compressor, tank, or supply
ports on the valve.
The valves are held closed by the tank pressure.
If the tank pressure gets below the air spring pressure, the
air spring will leak down with the tank. An easy way to check this; make sure the compressor runs until it shuts off. Write down the
tank pressure and let the vehicle sit over night. If the compressor kicks on right away the next time you turn on the system, you
have a leak on the supply side of the system.
Solution A:
Spray all fittings with soapy water. Tighten fitting and/or remove and replace thread sealant. Cut 1” off
of end of airline and reinsert
.
Control panel switches activate the correct air spring, but the air pressures read the wrong air spring.
Diagnosis
: Ex: Inflating the RF air spring changes the top left psi readout on the panel
Solution :
Swap pressure sensor harnesses at the sensors.
Pressure readings are not moving, always reads 168 psi or 0 psi.
Diagnosis
: ECU is not receiving a proper signal from the sensor.
Testing
:
Switch the wires between two sensors, if the corner you switched it with now reads zero, you have a bad sensor.
Solution :
1. Check pressure sensor harness connections.
2. Replace sensor
.
Height sensor bars read the incorrect corner.
Diagnosis
: Ex: When inflating RF air spring LF bar increases
Solution:
Swap height sensor harnesses at ECU.
