kevleaper said:

Hi all
I've recently bought a RR Classic with air suspension. It hadn't been running for a while and the previous owner had stripped some of the dash due to wiring issues (turn out it was mice in the heater box). Not much worked when I got it home (no starter, wipers, heater fan, central locking, the list goes on). I've been working my way through the list, but one thing that was working once I got the engine running was the air suspension. However whilst working on the car the air suspension stopped working and the car gradually dropped to the bump stops (fuses/relays seem okay but pump doesn't kick in with engine running) and after reading around I assumed it had gone into hard fault mode probably due to me dicking around fixing various other wiring issues.
I've downloaded the EAS unlock software, made a lead and can connect to the car. The software allows me to run the pump, depressurise the tank/airbags and all looks good with no fault codes showing. But pressing the unlock EAS makes no difference, the car still sits on the bump stops. I'm not sure if the car really has the EAS locked or I'm barking up the wrong tree. Is there anyway of telling the status of the EAS?
Thanks for your time
Kev Leaper

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kevleaper said:

Thanks for taking the time to reply
Yes got 'Good Green Idle', and pump was working and raising the suspension before I began investigating the other electrics so I think it's safe to assume it can produce a reasonable pressure. Pump runs on EAS unlock test mode, but not when reverted to the car's ECU.
I'd like to know if there's someway of confirming the car's suspension ECU has gone into some kind of 'hard fault mode'.
The EAS unlock software seems to work on the function/heights/depressurise pages and gives sensible FF responses in the RX file and Green Idle, but no fault codes (occasionally it lists every possible fault- 2 pages full - but they're all contradictory - valve stuck open, valve stuck shut etc). I contacted Storey at RSW and he said to ignore them and try altering the single byte speeds but that hasn't identified any real fault codes.
I thought I'd just trigged a hard fault in the ECU and the EAS unlock would clear it but hitting the unlock tab doesn't seem to change anything.

Bugger me it's a complicated system but I'd like to get to the bottom of it.

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kevleaper said:

Okay thanks, I'll check the pump pressure but I'm pretty confident it's making pressure as running it in test mode and then depressurising the tank in the test mode I can hear the air being released. The problem seems to be the pump doesn't even engage when I disconnect the EAS unlock cable and try it just on the car's ECU.
I'll delve deeper tomorrow and see what I can find.
Regards

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