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IMO: I'd leave everything as-is and do nothing further.
You got it working
I just plugged in the Mx+ and saw no diagnostic trouble codes. Hope it was just test mode and we did not act anything on it. all buttons work. I have to drive to the previous roads where i felt rough and make sure all ok.
Thanks Acrad and every one and this forum. There are tons of information.
How to check if the air suspension ecu and kdss are in proper working condition. I have techstream which i used for RES. looks like i still have rough ride after i drove on those speed breakers. As if no suspension. comfort or sport mode did not seem to change it.
RAHC test mode:
Acrad, when using SST check wire mode, step e, 12,4 and 13, all have to be connected together, is that right.
This steps may be required since I did not do that absorber (comfort <->sport) switch moves. I am wondering thats why its rough.
I want to do either this way or techstream way. your inputs appreciated. Thank you.
I only use Techstream for these kinds of tests. I haven't personally done any of the check mode tests with a wire myself. .. Can you visibly see rear of vehicle lower and raise stepping outside of vehicle while changing modes from a stop? Never seen documentation show 3 wires being connected at same time.. only two if suggested in documentation.
Have you tried forcing a high mode of suspension from a stop and let it drop at 18 or so MPH back to neutral position ? I've seen a few in past report a rough ride that was corrected for whatever reason doing this... it sounds like a height sensor recalibration to me but nothing in documentation to indicate that being an option.
It would appear the documentation supports that but never heard of anyone needing to do this.
What speeds are you traveling? It sounds to me more an effect of potential bag pressure (possible addressed through High mode recalibration) than the AVS shocks not working which would trigger error on dash.
I only use Techstream for these kinds of tests. I haven't personally done any of the check mode tests with a wire myself. .. Can you visibly see rear of vehicle lower and raise stepping outside of vehicle while changing modes from a stop? Never seen documentation show 3 wires being connected at same time.. only two if suggested in documentation.
Have you tried forcing a high mode of suspension from a stop and let it drop at 18 or so MPH back to neutral position ? I've seen a few in past report a rough ride that was corrected for whatever reason doing this... it sounds like a height sensor recalibration to me but nothing in documentation to indicate that being an option.
I only use Techstream for these kinds of tests. I haven't personally done any of the check mode tests with a wire myself. .. Can you visibly see rear of vehicle lower and raise stepping outside of vehicle while changing modes from a stop? Never seen documentation show 3 wires being connected at same time.. only two if suggested in documentation.
Have you tried forcing a high mode of suspension from a stop and let it drop at 18 or so MPH back to neutral position ? I've seen a few in past report a rough ride that was corrected for whatever reason doing this... it sounds like a height sensor recalibration to me but nothing in documentation to indicate that being an option.
It didnt work. stopped and did high mode. vehicle raised and after that drove above 18 mph and it went to neutral position. similarly did with lo mode. suspension act same. for me looks like all four wheels behave same in the speed bumper. May be it needs re calibration of some sort.
i believe step e can also be done by tech stream instead of the intelligent tester. i want to do on tech stream. Is it ok Acrad? Just wanted to see all these signals are coming.
If codes aren't showing up with TS and/or OBD Link that more than likely confirms connectivity but that test would also appear to confirm connectivity.
A TS Active Test would confirm everything is working.
If I am not mistaken, the air suspension in rear are mainly for height adjustment and auto leveling purpose, the ride quality in Luxury are controller by AVS, the active variable suspension, which is by controlling the shock damping rate to achieve softer, normal and spot riding. There is nothing to do with air suspension. BTW, I have not experienced any change with ride quality any settings after adding CC/MTS. I have used Techstream for ZPC.
If I am not mistaken, the air suspension in rear are mainly for height adjustment and auto leveling purpose, the ride quality in Luxury are controller by AVS, the active variable suspension, which is by controlling the shock damping rate to achieve softer, normal and spot riding. There is nothing to do with air suspension. BTW, I have not experienced any change with ride quality any settings after adding CC/MTS. I have used Techstream for ZPC.
you and Acrad used techstream, so no issues.
May be i can verify the parameters in mx+ and if require i can re do using techstream. how to clear in techstream if in need. I felt this change after i switched to the crawl control module from existing one. Since I did in garage, i had to drive to a place where i can drive straight after the calibration.
i monitored damper step front left, right, rear left and right.
comfort mode almost 1 (all)
normal mode almost 7 or 8 (all)
sport mode 10 or 11 (all)
also noticed rear left height control sensor at 36.5 mm and rear right control sensor at -30 at N level.
At speed breaker front wheels adjusts faster and rear adjusts after it passes the breaker.
i tried this with right side wheels go on the speed breaker and left one on the normal surface, since the breaker was short length. so when it self corrects, it was harsh.
I read some where, when we clear ecu, AVS takes 100 miles to learn all the behavior. don't know its correct.
I expected its gradual correction, but felt harsh in correcting after one set of tires (right front and rear)go over the speed breaker.
If I am not mistaken, the air suspension in rear are mainly for height adjustment and auto leveling purpose, the ride quality in Luxury are controller by AVS, the active variable suspension, which is by controlling the shock damping rate to achieve softer, normal and spot riding. There is nothing to do with air suspension. BTW, I have not experienced any change with ride quality any settings after adding CC/MTS. I have used Techstream for ZPC.
hzao, how do we know AVS is working correctly. any parameter/pid to verify?
06-20-21, 01:55 PM
