P38A Eas symptoms..

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Mark Piercy said:
Thank you @Mukiwa for your offer, does pound land do refurbed pumps, blocks and ecu's?:p.
The connector blocks to both the block and compressor are both spotlessly clean, ive already done the white connector block behind the kick panel but im going to revisit that also.
I'll be checking the suspension ecu for corrosion and such, looking back at wammers and datatek's post both the compressor and driver pack talk to the ecu.... So...o_O;)
But i will check the battery terminals as well:D
Click to expand...
The compressor does not talk to the ECU, connection from the ECU to the compressor is via a relay.
 
Datatek said:
The "vehicle has moved" fault simply means that the suspension has adjusted itself after the ignition was turned off.
I'm still inclined to think there is a leak in the system somewhere, you go off road with it so an airbag may have been damaged or one of the airlines..
The EAS is, in my 9 years experience, pretty reliable once sorted.
Also check the EAS earth points on the inner wing by the EAS box and the white connector behind the trim in the footwell on the passenger side.
Click to expand...
Morning Keith, thank you. Im writing this lot down, im going to spray the bags down and check for the leaks.;)
 
Datatek said:
The compressor does not talk to the ECU, connection from the ECU to the compressor is via a relay.
Click to expand...

And a pressure switch. I have said this ad nauseam nobody listens. Old saying. "I can can explain it to you but i cannot understand it for you". ;):D:D
 
Mark Piercy said:
does the ecu command the compressor via the relay?
Click to expand...

When the pressure switch detects pressure below 120 psi the ECU pulls relay 20, this switches on compressor and lifts diaphragm solenoid. When pressure switch detects pressure around 140 to 150 psi the ECU drops relay 20 compressor stops, diaphragm solenoid drops, and high pressure air is vented past diaphragm valve to atmosphere. In the reverse direction to filling carrying any moisture in the drier out with it.
 
Datatek said:
Yes, see electrical section section of RAVE section S1 page 5. Relay 20 is operated from the EAS ECU.
Click to expand...

wammers said:
And a pressure switch. I have said this ad nauseam nobody listens. Old saying. "I can can explain it to you but i cannot understand it for you". ;):D:D
Click to expand...

Right then, thank you very much both of you.
Ill try paper clipping the pressure switch and see how it behaves with a meter and hopefully rule it out.
So in theory it should give continuity when the compressor cuts out.
Damn the list is getting longer...:p
 
Last edited:
Mark Piercy said:
Right then, thank you very much both of you.
Ill try paper clipping the pressure swith and see how it behaves with a meter and hopefully rule it out.
So in theory it should give continuity when the compressor cuts out.
Damn the list is getting longer...:p
Click to expand...
The problem is unlikely to be the pressure switch but no harm in testing it.
 
Sorry, morning wammers..
Just got to make sure nobody in the family wants to go anywhere today so i can start checking things you've all suggested.
 
Mark Piercy said:
Right then, thank you very much both of you.
Ill try paper clipping the pressure swith and see how it behaves with a meter and hopefully rule it out.
So in theory it should give continuity when the compressor cuts out.
Damn the list is getting longer...:p
Click to expand...

The compressor if good can make a max of around 175 psi it would then overheat or stall and stop. If the compressor is continuously running either it is not producing good air or it is feeding a leak.
 
wammers said:
The compressor if good can make a max of around 175 psi it would then overheat or stall and stop. If the compressor is continuously running either it is not producing good air or it is feeding a leak.
Click to expand...
Feeding a leak it does seem..
I did the seal and cylinder along with the o'ring and it was pushing air out pretty good, so.... Its certainly feeding something wrong..:confused:;)
 
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