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Troubleshooting Guide
Presets work, but does not achieve target.
Diagnosis A:
Air tank is too small. Air spring pressure equalizes with tank pressure before achieving preset pressure/height.
Solution A: Reprogram #1 preset for the highest psi that allows the suspension to bottom out. You do NOT need to
let all of the air pressure out of the air springs. Let the air out of each end of the vehicle until it stops moving. This
should be your #1 setting. You will likely have air pressure left in the air springs. This will give it a “head start”. If this
does not fi x the issue, you need a larger air tank. A larger vehicle should always have a 5 gallon air tank.
Diagnosis B:
Tank pressure leaks down.
Solution B:
Fix leak on supply side of system.
Diagnosis C
: Pressure sensors and/or airline are not attached to corresponding air spring.
(Ex: RF button must activate RF air spring and top right number on display.)
Solution C:
Swap airline at delivery port on valve and/or air pressure sensor harness’s.
Diagnosis D:
Mechanical height sensors are out of range. Under “System Setup” check the presets voltages. If one or more are at
4.5v or .5v then the sensor is traveling beyond it’s range of travel.
Solution D:
Reduce or change travel of sensor by either changing linkage length, changing sensor arm length or by
rotating sensor.
Low voltage error.
Low Voltage Error is triggered if the system sees under 10.5 volts for an extended period of time. It will turn the compressors off to prevent
the battery from being drained. The compressors will come back on after the battery voltage increases and stabilizes.
Solution A:
Make sure the vehicle is running.
Solution B:
Check all of your connections at the grounds and battery.
Solution C:
If it is a common occurrence, you may need a larger alternator.
One corner will not infl ate or defl ate, but the others infl ate and defl ate.
Diagnosis A:
With the vehicle running, check to see if the valve clicks when the button is pushed.
Solution A:
If no click, check the harness going to valves and the grounds at the valve block.
Diagnosis B:
With the vehicle running, check to see if the valve clicks when the button is pushed.
Solution B:
If no click, check the grounds at the valve block. You can also test the wire of the coil of the solenoid that isn’t
working. Each coil of the valve block has 2 wires. One wire is ground, the other wire is the control wire. You should see 12
volts on this wire when the button for the solenoid is pushed. Use a volt meter on this wire to see if you have 12 volts when
the button is pushed.
Diagnosis C:
With the vehicle running, check to see if the valve clicks when the button is pushed.
Solution C:
If valve clicks, but does not open. The plunger in the valve is can be badly dimpled and needs replaced. If the
plunger is badly dimpled, it can get stuck in the hole in the valve, not allowing it to open. Information about servicing the
valves can be found at:
https://www.ridetech.com/tech/solenoid-valve-service/
Diagnosis D:
System is getting LOW voltage.
Solution D:
Start the vehicle and test to see if you are getting at least 12.5 volts at the battery. A battery charger isn’t
enough to run the system.
Wireless remote control does not function.
Diagnosis
: After programming remotes to ECU they still do not function.
Solution:
1. Try to relearn the remote to the WCU.
2. Replace Battery in Remote. LED will still light up even if the battery is near dead.
3. Red wire must be connected to a constant 12v, Yellow to switched 12v.
All pressure readings 0 psi.
Diagnosis
: 5 volt is shorted to ground.
Testing
: Verify that the pressure sensors are plugged into the harness and there is pressure in the system.
Solution :
1. Check the pressure and level sensor harness to see if there is a short to ground or the harness has and
internal short. This could be at a spot where the harness passes through metal or if the harness has been pinched.
Vehicle not obtaining correct height when going to a preset.
Diagnosis
: Vehicle is not at the height you intially programmed.
Solution: This is a learning system, the more you use it, the more accurate it will get.
DO NOT RERUN CALIBRATION ON A SYSTEM THAT HAS BEEN PREVIOUSLY CALIBRATED. IF YOU ARE HAVING A
PROBLEM WITH THE SYSTEM, TRYING TO RECALIBRATE WILL MAKE IT DIFFICULT TO DIAGNOSE THE PROBLEM.