Freelander 1 Pre and post facelift module compatibility

Having now got myself a new fangled 2003 facelift Freelander 1, I know that quite a bit changed in the electronics, but does anyone know what the key changes were and what is compatible from pre and post facelift??

ABS module has same ID for reading faults, the security system is different I think. Are the ECUs the same ?

That type of question !!!

@pscan.eu may already know this information. It would be worth collating as pre-facelift become rarer and parts get harder to find. (They are all in my barn !!)

Thanks

The TCM is the same as a late pre facelift. The ECM is probably also the same, as the same data is sent on the CAN.
I'm not sure about the CCU, and I seem to remember that the immobiliser module is different. Obviously the Ipack is different too.

The facelift audio equipment has a module on the tunnel just in front of the gear lever. Not on the pre-facelift. I think this is why the volume controls work with android head units without an additional box. Also, if my ears don't deceive me I detect a speed related auto volume control??

Be good to build this thread to cover the differences that people note.

andyfreelandy said:

The facelift audio equipment has a module on the tunnel just in front of the gear lever. Not on the pre-facelift. I think this is why the volume controls work with android head units without an additional box. Also, if my ears don't deceive me I detect a speed related auto volume control??

Be good to build this thread to cover the differences that people note.

Click to expand...

The CCU outputs a speed signal as PWM pulses. The audio system uses these pulses to alter the volume based on road speed. The speed signal is derived from the ABS module, but I can't remember if it's a separate PWM output, or if it comes via the Ipack. The steering wheel controls are a simple resistive ladder on the FL1, which can be used by a suitably designed aftermarket HU. I had my Sony working on the steering wheel controls.
The FL2 was the first use of a steering wheel module, so fitting aftermarket HUs isn't easy, but the FL1 is easy.

I can't remember seeing a box on the transmission tunnel on mine, but could that be the SRS module?

The diagnostic protocols changed on the ABS about that time I think, from Teves mk20 to Teves mk25, though I think that happened earlier than the Facelift, maybe 2002 or 2003. I doubt (though not 100% sure) that the canbus protocol from the engine ECU to ABS changed because I don't think that the engine ECU changed.

The immobiliser changed from EWS3D to SAWDOC about that time too. The immo and engine ECU are very much linked and difficult to relink so in my view the challenge is swapping from one ECU to another even if they are both EWS3D or both SAWDOC.

I'm not sure that there's actually much difference from a very late pre facelift and a facelift.

Thanks. So interestingly whilst having a key chip made for EWS3D seemed impossible to all suppliers I tried, my 2003 facelift SAWDOC allowed key chip closing by the first place I tried.

The Facelift HSE has the above audio system and as shown the resistive steering controls go to an Interface Module. The box on the transmission tunnel has these same coloured wires.
Interface Module converts steering controls to an 'Instrument Bus Protocol'. See below.

FREELANDER 04MY 4.145 Remote Audio Controls The remote interface unit (C1897) provides a feed via the rotary coupler (C0082) to the remote audio controls (C1254) on a BR wire. The remote audio controls contain a number of normally open switches and resistors. When either of the controls are moved, one of the switches closes and a voltage is returned to the interface unit (C1897) on a BW wire. The value of the voltage returned to the interface unit is dependent upon which way the controls are moved (and how many resistors are brought into the circuit). By measuring this returned voltage, the interface unit determines which function has been requested. The interface unit(C1897) converts this input into an Instrument (I) bus protocol message which it outputs to the head unit on a K wire. If a CD autochanger is fitted, this message is also relayed to the CD autochanger (C0941) on a K wire

andyfreelandy said:

View attachment 313726
View attachment 313725
The Facelift HSE has the above audio system and as shown the resistive steering controls go to an Interface Module. The box on the transmission tunnel has these same coloured wires.
Interface Module converts steering controls to an 'Instrument Bus Protocol'. See below.

FREELANDER 04MY 4.145 Remote Audio Controls The remote interface unit (C1897) provides a feed via the rotary coupler (C0082) to the remote audio controls (C1254) on a BR wire. The remote audio controls contain a number of normally open switches and resistors. When either of the controls are moved, one of the switches closes and a voltage is returned to the interface unit (C1897) on a BW wire. The value of the voltage returned to the interface unit is dependent upon which way the controls are moved (and how many resistors are brought into the circuit). By measuring this returned voltage, the interface unit determines which function has been requested. The interface unit(C1897) converts this input into an Instrument (I) bus protocol message which it outputs to the head unit on a K wire. If a CD autochanger is fitted, this message is also relayed to the CD autochanger (C0941) on a K wire

Click to expand...

Interesting. I'm assuming this was only used with the Becker nav system HU, as the lower spec model Visteon HU is directly connected to the wheel controls.

It does have Navigation yes. Not sure why that would require a volume interface ! Just the type of receiver I guess.

Have got to play with the Nav, it came with Europe CD too !! Should be fun.