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We've just fitted a 200tdi into our p38. just have a few problems now-the EAS worked fine before but now it doesn't-we let the suspenion down while engine was out by pulling pipe's of, then when we started it up it just says low air bag on dash.

Also we have a light on the the dash that looks like an injector atomising can't find any where what it means any help much appriciated. thanks
 

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Best thing is to follow through the eas topics at the top of the main P38 thread page to see where you are. Is the back end still up, is the compressor actually running, is the loom for the eas system intact? For a fault to be registered in the eas ecu, the ignition would have to have been on, with the bags or some other part of the eas disconnected. If that's the case, then you'll need the eas faultmate software from RSW solutions and knock up a lead to clear the eas ecu, even if the problem causing the fault message is cured, the ecu won't let go of the fault until you tell it to.
Not sure about the light on the dash. Was the p38 diesel before? If it was, then that sounds like the cold start operation warning. Is the original engine ecu and sensors still connected? I think diesel converters usually leave the engine ecu and as many of the sensors in place as possible.
When you get on the road, let us all know how it goes:smile:
 

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I am drawing a complete blank on details here. The EAS has to receive a signal that the engine is running in order for the system to be operable. I can't remember if it is BeCM derived or ECU derived.. or a combination. I would imagine in the process of conversion to the Diesel ECU you have somehoe foulded this signal. Hopefully someone with a few more operating brain cells will chime in with the details.
 

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Never heard of a Low air bag message on dash to do with the EAS.Are you sure it is not refering to the SRS airbag??
 

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Yes it was a diesel engine prior to conversion. It may well be a SRS fault as that light is also on as well as the EAS light. got some valves to manualy do suspension just so we can go for test run to see what other issues we have. The ECU is still all wired up, will try plugging in all the remaining sensors/switches to see what happens. Thanks for all your responses.
 

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oh what I would do for a diesel conversion.....:pray:
 

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Yes it was a diesel engine prior to conversion. It may well be a SRS fault as that light is also on as well as the EAS light. got some valves to manualy do suspension just so we can go for test run to see what other issues we have. The ECU is still all wired up, will try plugging in all the remaining sensors/switches to see what happens. Thanks for all your responses.
The BMW engine has DDE system which is a drive by wire, electronic diesel control system. Comparatively, the 200TDI system is a primitive non-electronic injection system. How did you connect the diesel ECU to 200TDI ? The light what you see is the result of disconnected wire at the 4th injector which is part of the timing circuit.
You need to connect the stop solenoid & a whole new accelerator cable to get the 200TDI running. No idea what will BECM do when it can't talk to ECU.

Good luck.
 

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The Ecu is'nt connected in any way to the engine now-it's only still connected to the BECM. I found all the needed wires prior them ECu to make the engine stop/start/charge/temp etc. all that seems ok. got a throttle cable fitted. will try and play with that wire from the injector to see if i can get light to go off. The dash messages don't seem bothered about all what we've done-all it seems to fuss about is that sun roof and windows not set!!!!


The BMW engine has DDE system which is a drive by wire, electronic diesel control system. Comparatively, the 200TDI system is a primitive non-electronic injection system. How did you connect the diesel ECU to 200TDI ? The light what you see is the result of disconnected wire at the 4th injector which is part of the timing circuit.
You need to connect the stop solenoid & a whole new accelerator cable to get the 200TDI running. No idea what will BECM do when it can't talk to ECU.


Good luck.
 

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Discussion Starter #9
Got EAS pumped up today using the bridging wire into the opropiate terminals to go on test run. Now got 35mph warning up so need to clear that fault but could do with knowing how to get a signal to the ecu telling it the engine is running. Is there a wiring/pin allocations for each wire in the EAS ecu plug and the eng ecu plug. Engine pulls very well in deed-you wouldn't know any difference.
 

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Got EAS pumped up today using the bridging wire into the opropiate terminals to go on test run. Now got 35mph warning up so need to clear that fault but could do with knowing how to get a signal to the ecu telling it the engine is running. Is there a wiring/pin allocations for each wire in the EAS ecu plug and the eng ecu plug. Engine pulls very well in deed-you wouldn't know any difference.
Engine ecu Connector C572 pin 29 to Eas connector C117 pin30
 

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Discussion Starter #13
Alls running very well now, been used for work for last 2 weeks-towing as well. No problems. Cleared all errors off display. Put suspenion onto manual valves for now. works well never gone down at all yet. Just the Injector warning light to sort now. Are the lights LED's or just bulbs as we're thinking of removing it. Heater fan speed switch playing up but just bypassed that for now as to cold to have no heater!!
 

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Discussion Starter #17
Just to let those know who may be interested-alls still running fine regarding the conversion, never let us down yet. got a nifty solution to the battery drain it has. Any one else done this conversion yet?
 

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Just seen this.
the injector symbol is to tell you that the DDE has an error (faulty No. 4 injector can be one of those faults) but in your case they will be multiple and permanant.
If you can get on diognostics you will get a list but would need a pretty complex black box to clear it.
EAS needs an engine running signal as RRToadhall said, on diesel that comes from crankshaft sensor via DDS to BECM. 200 tdi has no electronics at all (not a bad thing) so DDE will never see a running signal.
The nearest the 200tdi has is the AC terminal on the alternator, that is only there when running so it may be possible to fool the DDS and/or BECM to see this as a running signal.

Basically its a case of mechanical part done,now its fun and games with electronics and computer code.
 

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Discussion Starter #19
The old girl is still going strong, proved it's self now and is quite happily taken any where. Had no break downs as yet and past MOT with no problems.
 
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