I used a test light. I grounded it to the body. Should I have used a volt meter and checked for a full 12 volts?

 

We'll work with your light. So if light came on in two spots on the socket of the relay, that would be normal. And this must have happened when switch was in position 2 with main relay engaged, as one of the things it sends +12 volts to is the coil of the fuel pump relay. For main relay to be energized the ECU has to be awake, and the inertia switch has to be reset. So far so good.

What does red light on dash do - any of these patterns?

 

Here's some more ideas:

and

For immobilisation, the BCU disables the starter motor relay. When the engine is cranking, the ECM looks for a coded signal from the BCU. If the signal is not received within one second of cranking, the fuel supply to the engine is stopped and the injectors are disabled. This also prevents unburnt fuel from entering the catalyst.

If the BCU is disconnected, the engine starter motor will remain isolated by the starter motor relay and the ECM will remain immobilised. The main wiring for the system is contained within the main harness which is relatively inaccessible, so preventing intruders from disabling the system by cutting the wires for the immobilisation system.

Once the immobiliser has been activated, destruction of the trigger device or the wiring to it will not disarm the system. The RF transmitter communicates to the BCU via the RF receiver using a 70 bit code. Pressing the unlock button on the transmitter will re-mobilise the vehicle. The RF transponder is integrated into the metal key assembly, inserting the key into the ignition switch will induce a signal in the exciter coil to re-mobilise the vehicle.

Seems like the BCU and ECU are not talking, so BCU is supplying crank relay, but ECU is not hearing the re-mobilize code, so it keeps pump and spark off. Do you have a remote key fob? THE NAS vehicles may not have the re-mobilze coil around the ignition.

 

Transit mode will not cause a no start issue, as my Disco was somehow in transit mode when I purchased it. I did not realise anything was not normal, until I realised (accidentally, and after driving it for a year) the key could be could removed from the ignition without having the shifter in park. I discovered this "transit mode" and followed the instructions to exit transit mode. Now key can only be removed when shifter is in park.

 

Thanks for the clarification

 

There is a generic EKA code, 1515; which sometimes works. You can also try

Unlock once
lock 5 times,
unlock once,
and then lock 5 times.


See https://landroverforums.com/forum/di...d-works-45005/

 

Hi guys,
I hate to announce it but, it was another failed attempt. I tried the EKA code. When I first turned the key and held it in the unlocked position for 5 plus seconds, the horn never beeped to signal to start the process. I did it anyway 1 unlock, 5 locks, 1 unlock, 5 locks and nothing happened.
I do find that when I arm the system, it takes 10 seconds for the LED to start blinking at 2 second intervals. It does not blink at all for the first 10 seconds. Isn't it suppose to blink for ten seconds with a 50:50 cycle when armed?

 

OK - BCU will keep immobilized if it can't talk to IDM module on back of fuse panel. If central door locking is working, then IDM is talking to BCU. BCU pin C0661-1 to fuse panel plug C0587-17.

BCU provides two way data to ECM from C0661-10 to ECM C0637-33. This is pulses, so should have some voltage, but not just zero.

You may have to call a dealer with your vin and be prepared to send copies of registration, liscence, etc. to get them to reveal EKA for that vehicle. You may only have like 30 seconds after EKA process ends to start truck or it disables again.

 

I replaced the battery in my remote and I can unlock the doors with it now. It still will not start. Do I still need to call the dealer to get the EKA or should the remote do the same thing?

 

If you press unlock like 5 times in a row, and it still doesn't enable to start, would get the EKA (and write it down). You may end up having to get ECU resynced to BCU by dealer or shop with correct test gear.