Hello guys!

My friend have blue airmatic visit workshop warning his car.
Suspension still working normally. Car have new compressor and relay.
Warning comes 10-20 seconds after start.

We have checked car with star.
Problem is following. Airmatic loses all signals from acceleration, level and pressure sensors when ignition is on! There is also fauld code 5193 Power supply Sensors : Short circuit to ground STORED

But when ignition is off, all level sensor values are in tolerances!

 

Do the guided tests associated with fault in Star(DAS Xentry)

 

Yes, Star guide to: Check power supply and Test signal voltage of all sensors (acceleration, level and pressure).

Star tells, if all sensors have fault code, one sensor have short lead to ground.

I just wonder why sensors works when ignition is off?

Weak ground lose contact ignition on, when all equipments need more power?

 

I am confused, imposible for DAS Xentry to work if ignition switch not turned to first position(15 on but car not runing)--------------------Remember that after you hook up, you turn ignition switch on-----when you do that DAS Xentry uses battery voltage to work and to test all the circuits it is ask to!!

 

Maybe it ignition switch was first position, it was over week since we test car...

Anyway, when we watch airmatic actual values when car was running, they all was zero (exept pressure was 14 bar, which I assume is maximum value).
When we stop car values come back to normal level.

 

Second time we notice right front level sensor value was wrong.
Actual values was visible 10-20 seconds after ignition on, then they drop zero.
After changing right front level sensor suspension works perfectly!