thanks.
i'll have a read later and hopefully have a go at sorting it at the weekend
i'll have a read later and hopefully have a go at sorting it at the weekend
So the ECM/BECM had gone out of sync then and the number in the BECM was scrambled. That would not be caused by the locks but by a flat battery trying to start the engine. If the locks have a problem (lack of RF signal) on your year of car the BECM would not switch the ECM on, and the EKA code would be required to sort that.. That is why passive immobilisation was introduced in 1997. As said with ECM/BECM out of sync there is no dash message either on your year or any other year of car. On later models the starter circuit is disabled to prevent the battery being flattened trying to start the car and so prevent sync problems.
RangeRoller dt
Well-Sprung Member
think he has a retro fitted hiline becm not normally in a DT
I understand what you're saying and agree but just relating what occurred.
No battery problems. It was new at the time. I drove down, resynced the engine for her and she started up and drove home. Did it a few times. TFFT Nanocom. Fitted the upgraded RF receiver and no more issues. I disabled passive immobilisation at some point too. I've left the EKA enabled but cannot recall ever using it. EKA issues seem to be related to ignition barrel sticking and microswitches on door acting up when using the key from the experience on the scrapper.
That was later. Years later! Makes no odds, although the rear nearside courtesy light stopped working and I now realise why the BECM only cost a fiver!
RangeRoller dt
Well-Sprung Member
1995 DTs don't have passive immobilisation.
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RangeRoller dt
Well-Sprung Member
That’s why there’s no photos of it 
https://www.landyzone.co.uk/land-rover/checking-eas-compressor-and-diaphragm-valve.172555/
Is this the post?
Thanks
RangeRoller dt
Well-Sprung Member
Yes.
Well worth a read - after block dimensions is how to do it with a tape measure.
Well worth a read - after block dimensions is how to do it with a tape measure.
That’s why there’s no photos of it
See my avatar!
Oh well, I turned it off anyway!
Datatek
Well-Known Member
The engine does get immobilised though when the ignition is turned off so it helps to turn off the immobiliser.
How can you turn something off that's not fitted? When the engine is switched off the ECU cuts power to the quantity servo, which drops to zero fuel, stopping the engine, the fuel cut off solenoid also drops but that does not stop the engine, that is just an emergency back up if a fault is detected whilst the engine is running. If for instance if quantity feedback to ECU is lost the stop solenoid will drop to stop the engine. Passive immobilisation was only introduced for MY 1997 his car does not have it, so disabling it does nothing. You can disable passive immobilisation (If fitted). But you cannot disable ECM to BECM immobilisation.
Datatek
Well-Known Member
I think you are confusing what the coil on the ignition barrel actually does, it forces he FOB to send the rolling code, nothing directly to do with actual immobilisation of the engine which relates to the need for the BECM to send a code to the EDC that matches the pre-written code held in the EDC in order for the EDC to be enabled letting the engine start. The immobiliser flag is there on all the BECM's i've seen regardless of the presence of the of the so called passive coil which itself is not passive but active with i's own built in oscillator circuit switched by the BECM, the coil is turned off with the Immobilser flag.. It is not possible to disable the BECM to EDC immobiliser code, turning off the immobiliser flag alters the the prompt for the BECM to send the required code to the EDC and as far as I can see applies to all versions regardless of the passive coil. In effect the BECM to EDC code transfer becomes automatic with no need for the FOB or EKA code if EKA is also turned off or anything else for that matterHow can you turn something off that's not fitted? When the engine is switched off the ECU cuts power to the quantity servo, which drops to zero fuel, stopping the engine, the fuel cut off solenoid also drops but that does not stop the engine, that is just an emergency back up if a fault is detected whilst the engine is running. If for instance if quantity feedback to ECU is lost the stop solenoid will drop to stop the engine. Passive immobilisation was only introduced for MY 1997 his car does not have it, so disabling it does nothing. You can disable passive immobilisation (If fitted). But you cannot disable ECM to BECM immobilisation.
I am confusing nothing i know exactly what the passive coil does. But it can't do if if there isn't one fitted as in Grrrrrrs case. Grrrrrr said his ECM/BECM lost sync because of faulty RF receiver and he had to resync them. The only way i can think of to cause that to happen is if the RF memory becomes full unable to accept any more inputs and the BECM loses it's marbles, i don't know. But RF memory is deletable. It is an enigma. Even if passive is fitted and no message is visible the ECM/BECM sync can be lost in some cases. And there is no indication of that other than the engine will turn for ever and not start. That is why BBS made a fortune selling Syncmates.
RangeRoller dt
Well-Sprung Member
One pic per 175 threads. Shame Must be one of the nicest out there.
I’ve hidden nothing.
All the rust oil and tears are here for everyone to see an how it is after. Wasn’t always orange
