Are there any faults stored in the ABS ECU log that would indicate an issue with the sensors?
The L322 ABS and EAS system talk with each other and are dependant on each other for correct operation - hence why when one system faults, the other will also indicate a fault.
The EAS system relies on speed and braking information from the ABS ECU and the ABS system gets feed back from the suspension geometry position and the Steering sensor, Wheel speed sensors and the Yaw sensor to make adjustments through the Dynamic Stability Control system to ensure the vehicle is in a safe attitude and applies 'control measures' to maintain such.
The EAS system has indicated an Articulation Validity Fault - This either the ride heights are not valid (sensor readings out of range - or the ECU is not getting the readings it thinks it should and as such requires the ECU to be recalibrated) or the ECU is not getting the 'reaction' from the sensor it thinks it should... i.e. the ECU commands a down motion on the vehicle but the sensor is feeding back the car is actually going up.... this can happen if a sensor is mounted upside down or the control link has been reversed.
If you have no faults in the ABS ECU other than maybe a CANbus error (caused by the EAS ECU) or some other report to suggest the EAS system has shutdown and the ABS ECU isn't getting a message from it anymore.....then there is nothing wrong with the ABS system.
If an ABS sensor was at fault, there would be a fault logged with the ABS - similarly if the Steering Angle Sensor was at fault the ABS system would indicate this.
The EAS ECU has been known to get damp in its location on the passenger side (UK) A pillar, it may pay to get at it and check all the wiring connections to it, it could be a damp or corroded connection to it from one of the height sensors giving it a spurious reading.
Also, check all the wiring to all the height sensors for cleanliness and security.
This is why I got rid on my L322 in the end - the stress of fault finding was doing my head in.....they are complex beasts and after 5-6 years of ownership, a young family, work pressures etc...I needed to de-stress my life and went for something that is just nuts, bolts , grease and rust!
Faults in log are:
Anti lock brake system. Air suspension system can error
Air suspension. Articulation validity fault
Instrument panel module. Ebv function fault
Every time cleared eas works the drive off eas inactive
Eas Ecu is dry and connections looks good
All height sensors fitted right
When plugged in to the icarsoft i930 its says left front voltage 54volts
And all other 2 ish volts? That is new sensor,but it said the same before I changed it.
3 new height sensors ( have you ever heard of new one being faulty)
1 height sensor looks new but don't no how old.
How can you check a sensor is working correctly
I don't understand how it can go up in to off road down to access back to std
And 2/3minutes driving lights go out and eas inactive back on.
When calibration how close to std settings do you need to be?
When doing calibration and I try and lift 1corner 10mm and leave others close session, lift to full height let it set back down and every measurement is different.
Is that normal.
Cheers
Steve
