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Very strange. As you advised, the vehicle runs fine with the relay removed. And on checking one of the other TD5s it doesn't have that relay fitted on the passenger fuse box. I checked the resistance on the relay I thought was faulty. It reads 96 ohms. The good relay I substituted it with reads...

I will check the original relay when I am next at the club. I can compare the resistance to that of the good relay that replaced it. I did notice that the relay was warm to the touch when I pulled it which would perhaps support your idea about the relay coil failing 👍 Just hoping now that the...

And yes, good idea @sierrafery. I'll pull the relay I replaced and see if the original fault condition returns.

Next time I go to the sailing club, I will double check that it was the R4 position. I am pretty sure it was marked as ignition, with the one above it marked on the schematic for electric windows. It was a large size relay and identical to R4, the cooling fan relay in the fuse box in the engine...

Problem solved. Before swapping out the BCU from the other Disco, I thought I should check all the fused power supplies and relays, linked to the BCU/ECU. Turns out the culprit was a faulty relay R4 in the passenger compartment fuse box. As soon as I swapped the relay for a similar one out of...

Thanks again sierraferry. A massive help. I think we will try your suggestion as follows : for a basic test to not mix things up bad as both vehicles are similar after the BCU swap turn ignition on 2 let it so 5 minutes(DO NOT ATTTEMPT TO CRANK) then go with nanocom to engine ECU - utility -...

Thanks for this. Do you know if there any simple things like BCU connector pin voltage readings, earthing points, fuses, etc that we could check first to rule out anything basic before sending off the BCU to the company in your link? Am I right in thinking that because Nanocom seems to connect...

Thanks for this. Will do so when we return to the vehicle next week and let you know what we find.

Hello everyone. Long term 80/88/109/90/110/101FC/Lightweight/Disco 1,2,3/FL2 owner here. No longer have any LRs of my own, but currently look after a small fleet of four clapped out Disco's at our sailing club. Hoping to pick up help and tips on the Disco's and also to offer any advice where I can.

Thanks for the reply. We didn't remove the loom completely, but we did detach the P clip and cut open the insulation to inspect the wiring for about 2 inches either side of where the P clip was located. No sign of any damage to the individual wires. To gain access to the loom, I drilled out...

Hi all, First post here, so thanking everyone in advance for any help. I'm tearing my hair out with a TD5 Disco 2 Auto we use at our sailing club for shunting round trailers. Out of the blue the two flashing green transmission lights appeared on the dashboard and the gearbox went into limp...