AHC active test (1 Viewer)

[Chris T]

So having completed a replacement burst pipe I've now run into another problem the car refuses to pick itself back up.
I know from running tech stream that the rear ride height sensor is throwing a DTC I plan to replace it at some point but getting the car drivable was then goal.
No problem I thought let me do an active test and see if I can't force the front end back up to ride height.
From my understanding you should be able to jump the TS and E1 pins and then using the controller raise the front and rear independently of each other.
Unless I'm an idiot I'm getting sweet nothing, no pump activity at all.

So the question is does the failed ride height sensor prevent the active test from running the pump?

 

[TXLXAG]

I don’t know for sure the relationship between the ride height sensor and the operation, but I just had the active test also not work.
I replaced my globes about 6 months ago, and did not bleed enough. I had a decent amount of air in the system and it started the pogo again in the front. I bled the system, all 4 globes and the center height accumulator. Went ok for 2 raises and then the back end fell to the bumpstops.
It took me 2 days of repeatedly trying active test(never worked), clearing codes, applying 12v direct from the battery, and clearing codes before it finally worked.
I rocked the car back and forth after clearing codes and starting the engine and noticed the “abnormal pressure” DTC didn’t come back on as fast when I kept rocking it back and forth. I jacked up the back end by the pumpkin until tires were about 2-3” in the air, started the engine and rocked it repeatedly, and it eventually caught and lifted. I bled the system and cycled it L-N-H probably 10 times after that. So far it’s been working great.