So, if you bridge the relays "output side" wiring at the fuse-box the compressor runs; but it won't run even when you see/feel/hear the relay operate? This is illogical.I already done that and nothing happened
So, if you bridge the relays "output side" wiring at the fuse-box the compressor runs; but it won't run even when you see/feel/hear the relay operate? This is illogical.I already done that and nothing happened
wait wait wait there is nothing of that "see/feel/hear the relay operate"So, if you bridge the relays "output side" wiring at the fuse-box the compressor runs; but it won't run even when you see/feel/hear the relay operate? This is illogical.
No, fuse box overheat is a fairly common problem due to failed solder joints and loose connectors. They can be repaired if you are good with a soldering iron.
Sorry to ask... has this been done yet?Also buy or make the EAS diagnostic cable, and download EAS-Unlock. If the ECU is in fault state it often will not run the pump.
Sorry to ask... has this been done yet?
nope which white connectors?
The white connectors are behind the plastic trim at the bottom of the A posts both sides.check for corrosion the best solution is to cut the connectors out, solder and heat shrink the wires.
HAHA yeah the "gefickt" (in english: "fu ck ed") is absolutely brilliant ;D so you mean it help when I spray PCB Cleaner into the fuse box?
Sorry to be so pedantic (or perhaps stupid?)... but is this ground side of the relay missing?
If it was missing then even if the ECU says "RUN" there is no circuit and R20 will never operate and the motor cannot run.
View attachment 262518
nope which white connectors?
From memory there is an earth point by the front of fuse box on the inner wing.worth checking it's clean and tighthmm.. I can't imagine that, but I will see it when I disassemble the fuse box. But I can only do it on the weekend because I don't have much time this week.
If you earth the orange wire in the comp.connector block and the comp runs the thermal switch is faulty.
Depends on your experience, not easy if you are not used to dealing with printed circuit boards.oh okay.. Is this difficult to disassemble?
Depends on your experience, not easy if you are not used to dealing with printed circuit boards.
More tests needed first. If you put a jumper wire across pins 2 & 5 of the relay socket, does the compressor run?
Yes, I saw it after I postedI did ask this at post 41 Keith.
I am not sure we got an answer though.Yes, I saw it after I posted
I see the OP now says the relay doesn't actually operate, so the problem is between the relay and the ECU or as others have said a bad earth.I am not sure we got an answer though.
I thought it would be a good test to prove earth & live continuity out to the compressor and see whether it might be the relay internal contact failed or the relay itself has failed.
I also suggested swapping it for another like-type relay in the fuse-box.
But, if the relay doesn't operate it is either a failed relay (swap it) OR the wiring is bad (fix it) OR when you jumper out the contacts of the relay IF the pump runs it must be the relay has failed. No?I see the OP now says the relay doesn't actually operate, so the problem is between the relay and the ECU or as others have said a bad earth.
No signal from the ECU and the relay will not operate, same if the earth path is bad either of which could be wiring or the fuse box.But, if the relay doesn't operate it is either a failed relay (swap it) OR the wiring is bad (fix it) OR when you jumper out the contacts of the relay IF the pump runs it must be the relay has failed. No?
Bridging the relay proves everything else is good if the pump then runs. If it doesn't it is a failed pump or duff wiring but you have proved it is or is not the relay itself.
But, if the relay doesn't operate it is either a failed relay (swap it) OR the wiring is bad (fix it) OR when you jumper out the contacts of the relay IF the pump runs it must be the relay has failed. No?
Bridging the relay proves everything else is good if the pump then runs. If it doesn't it is a failed pump or duff wiring but you have proved it is or is not the relay itself.
No signal from the ECU and the relay will not operate, same if the earth path is bad either of which could be wiring or the fuse box.
OP, with the relay removed, put one lead of a voltmeter set to 20 volts in pin #1 of the relay socket and connect the other lead to an earth point, then with diagnostics command the pump to run and see if you get a reading on the meter.