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Thread: Updated - Converting Half-CAN to Full CAN Head-Unit and Display

  1. #1
    Full Member Robsey's Avatar
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    Vehicle : Vectra C

    Trim : Energy

    Engine : Z19DTH

    Year : 2005

    Mileage : 150,000

    Default Updated - Converting Half-CAN to Full CAN Head-Unit and Display

    I have done a few of these conversions now, and it has become apparent that Uncle Vauxhall enjoyed making changes to wiring besides the well documented Half CAN to Ful CAN changes.
    Two cars sharing the same model year and trim level can be wired up sligtly differently.

    So Here Goes.

    Head Unit First

    By far the tidiest way to do this is to get an ISO to Quad-Lock conversion lead.
    Such as an ISO2KAR or SOT122S adapter lead.
    This allows you to revert back to Half CAN should you wish to do so.

    ISO Pin Outs are as follows: -

    hc std ehu.JPG

    hc nav ehu.JPG

    The pin outs for these should be very straight forward.

    The speaker wires move from ISO plug pins 9 to 16 to Quad-Lock Connector Pins 1 to 8.
    They retain the same order which is:-
    Right Rear, Right Front,
    Left Front and finally Left Rear.

    For the power block, it is much simpler.

    Pin 1 = Grey / White = Serial Connection to Display - not required on full CAN systems.
    Pin 2 = Thin Red = Accessory live connect this to the fat Red and these both go to Quad-Lock pin 15
    Pin 3 = Grey / Yellow = Illumination, not required on full CAN systems.
    Pin 4 = Brown = Chassis / Earth – this wire goes to Quad-lock pin 12
    Pin 5 = Blue / red = Speed dependent volume control – Not Requited
    Pin 6 = No Connection
    Pin 7 = Red / White = Aerial / Amplifier power – Not required but listed as Quad-Lock pin 13
    Pin 8 = Fat Red = Main Fused permanent live – see pin 2

    So – in short you should have
    8 x speaker wires – these go to Quad-Lock pins 1 to 8
    2 x red battery live wires joining to become one – goes to Quad-Lock Pin 15
    1 x brown earth wire – goes to Quad-Lock pin 12

    Now then – wires to add.
    The bare minimum you will need to add is a Green and a White twisted pair of wires between the head-unit and the display.

    These wires are covered in the Display part of the How 2, but it is basically as follows: -
    Add a green wire (MS CAN High) to run from Quad-lock Pin 9 to Display Pin 20
    Add a white wire (MS CAN Low) to run from Quad-Lock pin 10 to Display pin 19.

    *** If you plan to keep a full CAN Infotainment System in the car – even after you sell the car ***

    You could use two of the redundant wires from the serial data stuff.
    You could use –
    Two Half CAN serial data wires between the head-unit and display.
    So the grey / white wire on pin 1 of the ISO plug could link to Quad-lock pin 10 for the white MS CAN Wire.
    And a bit trickier but -
    the green / white wire on pin 20 of the ISO plug could link to Quad-Lock pin 9 for the green MS CAN wire.


    Here are the pin outs for the full CAN set-up

    quad basic.JPG

    And that’s it, unless you have a whole heap of other accessories in your car to start with. (ECC, UHP4, mid-dash speaker, Parrot / Nokia car kits and so on).

    the maxed out pin out is as follows.

    full quad.JPG

    Here is my basic wiring diagram and will work in any standalone situation such as my 1994 Cavalier.

    iso to quad.jpg

    next the display.....

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  3. #2
    Full Member Robsey's Avatar
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    Trim : Energy

    Engine : Z19DTH

    Year : 2005

    Mileage : 150,000

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    Okay the Display - not at all tricky when you know what wire goes where..

    Upgrading to Full CAN GID or CID Displays – Vectra-C.
    STARTING WITH A FULL CAN SET-UP with a Triple Info Display.
    The Power Wires.
    This set of images was prepared, to make it simpler for prospective modifiers to upgrade to a Graphical Information Display (GID) or a Colour Information Display (CID).

    The usual problems relate to the number of Permanent Live Feeds and Ground Wires in Vectra-C’s.
    Many lower specification vehicles do not have wires on pins 1 and / or 3.
    The easiest solution is to fit extra pins into the slots for 1 and 3, and then link pin 1 to pin 2,
    Then run a red wire from pin 3 to the red wire on the Head-Unit ( Quad-lock pin 15 ).

    fc pwr wrs.jpg

    The CAN Communication Wires. These will all be in place
    Vectra-C’s manufactured from approx. October 2004 are wired up to what is termed a Full CAN format. This is where all communications and diagnostics are done through a Controller Area Network protocol.
    All CAN wires are either Green or White.
    Green is termed CAN High for the signal line
    White is termed CAN Low for the reference line.
    In Low Speed CAN, there is no “Low” wire, and so this is termed Single Wire CAN or SW CAN.
    These wires are also green.

    Earlier Vectra-C infotainment systems manufactured between approx. October 2002 and September 2004 mainly used KWP protocols.
    KWP Wiring can be identified by brown wiring with a coloured stripe or tracer.
    Normally brown with a white stripe (brown/white), or brown with a yellow stripe (brown/yellow).

    The Display acts as a link between Low Speed and Mid Speed modules.
    Low Speed Modules are: -
    Display (DIS), Column Integrated Module (CIM), Body Control Module (BCM), Under Hood Electrical centre (UEC) and Rear Electrical Centre (REC).

    The Mid Speed Modules (where fitted) are: -

    Display (DIS) , Entertainment Head Unit (EHU), Digital Audio Broadcast Module (DAB), Telephone Portal (UHP4) and the Electronic Climate Control system (ECC).

    fc can wrs.jpg

    Optional Wires. Not Fitted at the Factory
    The last three wires appear to be optional for a Graphical Information Display.
    The Display will work perfectly satisfactorily with or without them. They did on the wife’s 2005 Full CAN Pre-facelift Vectra-C Energy.
    So this image is merely for information.

    fc ser dat.jpg

    The source for these pin outs is Vauxhall / Opel / Holden / GM’s official electronic information database. (2007 Edition of TIS2000) The wires are correct according to their wiring diagrams, and they appear to allow correct functioning of various models of infotainment system.

    Converting from Half CAN 18 pin to Full CAN 32 Pin.
    If you have the 18 pin display connector, you will need to obtain a 32 pin grey connector from a salvage vehicle. (ALL Full CAN displays use a grey 32 pin connector)

    To convert from Half CAN 18 Pin to Full CAN 32 pin
    Transfer your wires one at a time as follows.

    TID plug pin 1 – Green LS CAN for BCM goes to GID / CID plug pin 28
    TID plug pin 4 – Green LS CAN for Airbag goes to GID / CID plug pin 25
    TID plug pin 5 – Red for head-unit live goes to GID / CID plug pin 3
    TID plug pin 6 – Brown for chassis ground goes to GID / CID plug pin 2
    TID plug pin 7 – Black for ignition live is not required.
    TID plug pin 8 – Red for battery live goes to GID / CID plug pin 5

    None of the other wires from pins 9 to 18 are required as they are only for Half CAN functions.
    (But you can use them to allow you to do the following conversions / additions)
    Wires that need to be added or altered.

    On some Vectra’s, it is necessary to link the red wire on pin 3 to the red wire on pin 5
    BUT... hold your fire.
    Carry out the head-unit conversions first.
    Only if the display and head-unit fail to work properly on completion should you consider linking pin 3 to pin 5.
    Add a brown wire to pin 1, and then link this to the brown wire on pin 2

    You can see also that there are NO mid-speed CAN wires for the head-unit or for the Diagnostic / Programming socket.

    In this instance -
    You will need to populate 4 wires into your new 32 pin socket.
    (As said above, you could use 4 redundant wires from those listed above).

    Pin 19 – White – MS CAN Low - fit a wire to go to the head-unit pin 10
    Pin 20 – Green – MS CAN High - fit a wire to go to the head-unit pin 9
    But see the *** comment first in the head-unit section ***
    Pin 22 – Green – MS CAN High - fit a wire to go to the EOBD II Diagnostic socket pin 3
    Pin 23 – White – MS CAN Low - fit a wire to go to the EOBD II Diagnostic socket pin 11

    Converting from Half CAN 32 Pin to full CAN.
    Power and Ground Wires.
    You will need to add an extra brown ground wire to pin 1 - link this to the existing brown ground wire on pin 2.

    Regarding the red permanent live wires - It should be a simple matter of moving the red wire from pin 31 and moving it to pin 3.
    If on completion of the wiring conversion, you do not get the head-unit and display operating correctly, then it is suggested that you link pins 3 and 5 together.
    If they do work correctly, then leave the wires alone.

    You will not need the black ignition live wire on pin 4.
    CAN and Communication wires.
    If you are converting from NCDC 2013 / 2015 to Full CAN, then all the CAN wires should already be in place.–
    Update... After doing this conversion, and finding that CAN communication did not work, it was easier to ignore that these wires are already fitted, and to fit a fresh pair of Mid Speed CAN wires between the head-unit and display.
    If you do not have ECC, then fit the MS CAN wires for the head-unit as shown in the diagrams above.
    If you do have climate control (ECC) then you will already have a pair of wires in the display on pins 19 (white) and 20 (green). These can stay where they are. “Don’t fix what ain’t broke!!”

    It is perfectly safe to fit the EHU wires to pins 17 and 18 instead.
    Do remember that in this situation – (Only if you had half CAN ECC).
    the green from pin 9 of the head-unit would go to pin 17 of the display,
    and
    the white from pin 10 of the head-unit would go to pin 18 of the display.

    The important thing to remember is which Mid-Speed pins are green and which are white.
    When checking your work...
    Pins 17, 20 and 22 are Green (MS CAN High)
    Pins 18, 19 and 23 are white (MS CAN Low).
    When fitting this to a Cavalier the first time, I got one twisted pair the wrong way round, with the result that neither the display nor the head-unit worked.

    Low speed or single wire CAN wire positions should be the same for the 32 pin plugs on both half CAN and full CAN displays
    All LS / SW CAN wires are Green
    The LS / SW CAN wires are as follows: -
    Pin 25 = LS / SW CAN to Airbag Circuit
    Pin 28 = LS / SW CAN to Body Control Module (then onto IPC, REC, UEC and CIM)

    GID serial data wires (??)

    These wires are not shown on the sticker on the CD30, CDC40 Opera and CD70 Navi, but are shown in the wiring diagrams on Vauxhall / Opel’s Technical Info System (TIS 2000) documentation.
    It is thought therefore that these are not essential for the system to work properly.


    Here is a picture to show how to remove a pin on the display plug, so that you can strip it out or move it if required.

    pin removal.JPG


    next aerial options......

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  5. #3
    Full Member Z80's Avatar
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    Default

    Thanks for compiling information, @Robsey.

    I'd have questions, please :

    - What about stalk controls on a half-CAN car ?

    - Would preface scrollers work on a half-CAN CIM ?

    - Should a full-CAN CIM be required to operate a CID ?

    - Is there any possibility to operate a CID without a matching EHU (aftermarket headunit in mind) while keeping all the Board Computer features, and stalk (or scrollers) controls ?

  6. #4
    Full Member Robsey's Avatar
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    Trim : Energy

    Engine : Z19DTH

    Year : 2005

    Mileage : 150,000

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    There are a few options for the RF aerial.

    Keep the half CAN ISO aerial and use a ISO / DIN to Fakra Converter, or to Convert the whole aerial coax from Half to Full CAN.

    aerial adapter.JPG

    Antenna Power
    Half CAN vehicles use a head-unit controlled 12 volt supply to feed voltage to the aerial amplifier circuit. So if fitting a full CAN infotainment system but keeping the half CAN aerial, it may be necessary to wire an accessory live or ignition live to feed the supply to the aerial amplifier circuit.
    (This is the red / white wire in the Half CAN ISO plug on the body loom.)

    If going the whole hog and fitting a full CAN aerial and loom complete, no additional wiring is required. The full CAN radio sends the amplification voltage directly up the centre core of the aerial coaxial cable to the base of the aerial itself.
    BUT – be aware that the hassle of dropping the head-lining, swapping aerial bases (assuming you can get a good condition base gasket) and faffing trying to undo the aerial coax connection in the A-pillar connector (X2) can be enough to make most people give up in frustration.


    It is more likely to be done if converting to Sat Nav or DAB set-up where you may wish to use the bigger purpose built aerial base.


    If you are keeping your half-CAN aerial, and plan to fit a CD70, then it is suggested that you get a small mag-mount patch aerial with a Fakra connector.
    I usually specify "TERA" aerials specifically made for the VW / Audi vehicles.

    Other considerations...

    Steering Wheel Controls
    All full CAN head-units will work fine with no controls fitted to the steering wheel, in fact many cars left the production line without steering wheel controls.
    BUT -
    If you wish to use steering wheel controls, then you need to change your button controls to scrollers.
    It is suggested that you obtain the scroller switch panels wiring and the contact plate from a full CAN vehicle, and transfer these to your existing steering wheel.
    Be aware that steering wheels can have slightly differing spoke profiles, so occasionally it is possible to find that the scroller switch panel does not have the same profile as your steering-wheel spoke.

    After retro-fitting or changing the type of controls fitted to the steering wheel, you MUST program the CIM module to the correct type of controls (None / Buttons / Scrollers).
    Failure to do this will cause the horn to be sounded whenever you press any of the controls on the right hand switch assembly. This is because the horn shares it’s +12volt and earth wires with the right hand scroller / button switch panel assembly.
    Brown / White = +12volts
    Brown = ground.

    ECC / SAC.
    If you do have ECC or electronic climate control, then it is always necessary to obtain and fit a full CAN heater control panel in place of your current half-CAN heater control panel.

    On the rare occasion that the ECC still does not function 100%, then it has been known that the UEC (engine bay fuse box) is not wired fully to run a full CAN heater panel and some wiring modifications / additions may be needed here.

    Others have managed by moving the CAN pins “along one position” on the ECC panel connector.

  7. #5
    Full Member Robsey's Avatar
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    Vehicle : Vectra C

    Trim : Energy

    Engine : Z19DTH

    Year : 2005

    Mileage : 150,000

    Default

    I'd have questions, please :

    - What about stalk controls on a half-CAN car ?

    I haven't had to fit a full CAN set-up to a car with stalk controls... not sure but I don't think they work.

    - Would preface scrollers work on a half-CAN CIM ?

    Yes, I run a CD70 on my Vectra-A / Cavalier mk3 with scroller controls and a Half CAN CIM with Half CAN BCM

    - Should a full-CAN CIM be required to operate a CID ?

    As said, no - I run an 06 CD70 (full CAN) usinng a 2003 CIM and BCM

    - Is there any possibility to operate a CID without a matching EHU (aftermarket headunit in mind) while keeping all the Board Computer features, and stalk (or scrollers) controls

    If you are planning a full CAN CID with an aftermarket EHU then yes it will work via the scroller controls.
    It will not however link to a half-CAN head-unit. and again, as far as I know, the stalk would not work.


    I would also read my original How 2 for the full CAN system as it discussed the patch aerial and the display surround issues that can crop up.

    http://www.vectra-c.com/forum/showth...avi-and-Screen

    There is also a very old thread, where I posted up my learning curve of fitting the CD70 to my 1994 Cavalier (pre canbus vehicle)

    http://www.vectra-c.com/forum/showth...non-canbus-car
    Last edited by Robsey; 23rd October 2013 at 23:04.

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    Thanks for sharing, I finally did it嗚呼
    IMAG0668_1.jpg

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    How often does your dashboard need mowing?

  10. #8
    Full Member Robsey's Avatar
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    Glad to be of help.
    Looks good :-)

    It is an easy job to do...
    Just not easy to explain in a thread.

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    Quote Originally Posted by Big Dave View Post
    How often does your dashboard need mowing?
    hahahaha

  12. #10
    Full Member Z80's Avatar
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    Vehicle : Opel Vectra GTS

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    Hi Rob, and happy new year !
    Quote Originally Posted by Robsey View Post
    - Is there any possibility to operate a CID without a matching EHU (aftermarket headunit in mind) while keeping all the Board Computer features, and stalk (or scrollers) controls

    If you are planning a full CAN CID with an aftermarket EHU then yes it will work via the scroller controls.
    Well, I've been dasappointed all the way until now, but actually, the preface CID seems to need a matching headunit, as the scrollers actually talk to the EHU, that in turn talks to the CID.

    However, if I interpret correctly what you're answering here, it would mean the facelift (16:9) CIDs behave differently, communicating directly with the CIM through the CAN bus ?

    Maybe it explains why they are supposed to have an board computer option, while I could find none in the preface CID programming menu. In this case, it means I could have more luck with a facelift CID...

    I'll first finish to check all the possibilities and complete the wiring, then try to program my CIM in scrollers mode (that is, if the option is actually available from the menu).

    ... And this should be once I get the car back from the garage, as I'm still waiting for Alex to come back and sending me the injection pump !

    I still assume there is a way to succesfully marry a CID with an half-CAN CIM. I've got preface scrollers and a preface vents surround for a 16:9 CID screen ready, so I could test any combination...

    Quote Originally Posted by Robsey View Post
    It will not however link to a half-CAN head-unit. and again, as far as I know, the stalk would not work.
    OK, this is not a concern for me, as if I was to fit a GM EHU, I'd obviously choose a matching model. I'm not going to do this anyway, so my problem is to have a standalone CID (of any kind) to work in my car and offer the onboard computer features.

    For now, apart from a logo and the date, time and temperature, it just displays OBD warnings, that I can't dismiss because it doesn't respond to any click from the stalk nor from any wheel button !

    On the other hand, the ECC is fully functional (both the bottom line and the full screen settings when pressing the centre button), but if I'm going to fit a 16:9 CID, I guess I'll have to replace it with a full CAN ECC ?
    Last edited by Z80; 7th January 2014 at 09:22.

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