HU-1205 on V40, 1999, few wires contact places missed,
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    1. #1

      HU-1205 on V40, 1999, few wires contact places missed,

      Hi
      I have bought Autoleads PC6-073 car hands free support kit for my Volvo V40/1999 and HU-1205 sat nav/radio.
      I installed it today (all for with Sony-Eriksson HCA-60/K800i mobile).
      The problem is that my Volvo V40 TDi/1999 has no radio DIN Volvo grey and green connectors as they have been cut/deinstalled by previous car owner, only a bunch of diff. coloured wires, so I was forced to reverse engineering all Volvo radio connectors for HU-1205.
      Most was found and successfully paired with Autoleads DIN connectors, but few were missed.
      Could someone help me?
      I don't know/find where it should be connected on Radio/Autoleads:
      From Volvo car side:
      - Green - to B4 on speedometer, was on pin 7 according to radio wiring scheme
      Probably, Volvo automatic audio level control by car speed
      What is its place on Green connector?
      - Yellow/white, was on pin 10 according to radio wiring scheme, going to B2/B3 Central Electric module.
      What is its place on Green connector?
      - Yellow/red, was on pin 13 according to radio wiring scheme, going to J10 on passenger compartment fuse & relay box
      What is its place on Green connector?
      ====================
      From Autoleads side:
      - Double Red (+12V) - to ignion/switch - does it mean Volvo V40 has no such wire on its green DIN on radio connector, and I must disassemble the wheel box to get an access to ignion switch??
      - Orange, marked "illumination, dash light" ?
      - Brown, marked "Dimmer" ??
      ===================
      remote Audio Autoleads contacts, probably
      red/white, pin 3 Green DIN Connector ??Function???
      yellow/green, pin 7 Green DIN Connector ??Function???
      grey/red, pin 5 Green DIN ??Function???
      black/red, pin 8 Green DIN ??Function???
      black/brown, pin 10 Green DIN Connector ??Function???


      Modified by EdinElk at 5:08 AM 10-9-2006

    2. #2

      Re: HU-1205 on V40, 1999, few wires contact places missed, (EdinElk)

      This may help:

      The 'hidden wire' has a red color.

      Note that you're looking at the female connector. The contacts in the picture are grouped as:

      A6 A5 A4 A3 A2 A1
      A12 A11 A10 A9 A8 A7

      And this is what they mean:
      A1 - Supply
      A2 - Switched supply
      A3 - Rheostat signal (Signal from the central electronic module (CEM). An increased pulse ratio gives greater luminance. (If there is no rheostat signal, there will be maximum luminance in the audio module)
      A4 - Speed signal (Pulsed signal from the combined instrument panel. Frequency increases with increase in speed.)
      A5 - Back-up (reversing) lamp switch, input signal (The back-up (reversing) lamp switch must be activated when reverse gear is engaged.)
      A6 - Carphone mute
      A7 - n.c.
      A8 - Power ground
      A9 - Remote control signal ON/OFF (Remote control:antenna amplifier (V40), power antenna (S40), Bass speaker (V40) (Integrated power stage).)
      A10 - n.c.
      A11 - n.c.
      A12 - Power ground


    3. #3

      Re: HU-1205 on V40, 1999, few wires contact places missed, (mrg_Ed)

      You are saying you have 1999 V40, isn't that the 1st phase models? Those came with SC- radios, not HU-s like 2nd phase models. And I doubt they are interchangeable due to central electronic module.

    4. #4

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      This may also help: (sorry for the size of picture, I don't know how to make it smaller)

    5. #5

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      Mrg_Ed: Are you sure about A6 wire for telephone mute? Because I couldn't find it anywhere on the internet Does it really work?

    6. #6

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      Hi, and thanks a lot, it should really help me.
      Yes, I can confirm that pin 6 works as mute for my version of HU-1205, when Sony-Er Kit HCA-60/K800i got a call, HU-1205 will be muted, and show the word "Telephone" on its screen.

      I also discovered that there are two versions of HU-1205 - with one and with two DIN connectors as in HU-803 on rear. Mine is with one.
      Left first one is for CD-changer, second - I have no idea, may be for external amplifier or TV/DVD.






      Modified by EdinElk at 1:29 PM 10-9-2006


    7. #7
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      Re: HU-1205 on V40, 1999, few wires contact places missed, (EdinElk)

      EdinElk: check your private mail, I sent you some info.

      I'm going to guess that the other DIN is for the RTI, etc. But the info that I sent you may give you the answer.

      '04 V70 NA -- gone

    8. #8

      Re: HU-1205 on V40, 1999, few wires contact places missed, (MrTippy)

      Yes, I see, indeed, I've got your message with full wiring of HU-1205 diagramme for external connectors. Thank you.

      Could Volvo people with audio wheel control (S40, V40 after 2000 etc.) confirm the fact HU-1205 has "wheel audio remote control"? Next-previous, play-pause.
      If No, what HU- has? Say, HU803, no?

      Another question where is possible to buy HU-1205 Hirose antenna connector Volvo uses for? I checked Hirose dealers, they have no in stock
      GT5-2S-HU (755-0044-1)..
      I checked also Volvo reverse antenna adapters and don't find any with dual female GT5-2S-HU.


    9. #9

      Re: HU-1205 on V40, 1999, few wires contact places missed, (EdinElk)

      Quote, originally posted by EdinElk »
      Yes, I can confirm that pin 6 works as mute for my version of HU-1205, when Sony-Er Kit HCA-60/K800i got a call, HU-1205 will be muted, and show the word "Telephone" on its screen.

      Yep, same here.

      Quote, originally posted by EdinElk »

      I also discovered that there are two versions of HU-1205 - with one and with two DIN connectors as in HU-803 on rear. Mine is with one.
      Left first one is for CD-changer, second - I have no idea, may be for external amplifier or TV/DVD.

      The 2nd is for an external amp.


    10. #10

      Re: HU-1205 on V40, 1999, few wires contact places missed, (EdinElk)

      Quote, originally posted by EdinElk »
      Another question where is possible to buy HU-1205 Hirose antenna connector Volvo uses for? I checked Hirose dealers, they have no in stock

      Crutchfield has something

      Here's another

      Check eBay, here's one too e.g.


    11. #11

      Re: HU-1205 on V40, 1999, few wires contact places missed, (mrg_Ed)

      Quote, originally posted by mrg_Ed »
      Note that you're looking at the female connector. The contacts in the picture are grouped as:

      A6 A5 A4 A3 A2 A1
      A12 A11 A10 A9 A8 A7

      And this is what they mean:
      A1 - Supply
      A2 - Switched supply
      A3 - Rheostat signal (Signal from the central electronic module (CEM). An increased pulse ratio gives greater luminance. (If there is no rheostat signal, there will be maximum luminance in the audio module)
      A4 - Speed signal (Pulsed signal from the combined instrument panel. Frequency increases with increase in speed.)
      A5 - Back-up (reversing) lamp switch, input signal (The back-up (reversing) lamp switch must be activated when reverse gear is engaged.)
      A6 - Carphone mute
      A7 - n.c.
      A8 - Power ground
      A9 - Remote control signal ON/OFF (Remote control:antenna amplifier (V40), power antenna (S40), Bass speaker (V40) (Integrated power stage).)
      A10 - n.c.
      A11 - n.c.
      A12 - Power ground

      There is also explanation of the pins on this page: http://forums.swedespeed.com/zerothread?id=16735
      And it says:
      A1: +30 supply (constant)
      A2: +15 supply (switched)
      A7: CANBUS High
      A8: CANBUS Low
      A9: antenna amplifier Power
      A10: Center Channel +
      A11: Center -
      A12: Ground

      Almost the same, except for A7, A8, A10, A11, where the A8 is most confusing to me: Canbus Low or Power ground


    12. #12

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      Quote, originally posted by sebaveh »

      There is also explanation of the pins on this page: http://forums.swedespeed.com/zerothread?id=16735

      That's for HU's that fit S60/V70/S80, like HUxx1, HUxx3, HU650, HU850


    13. #13

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      Hmm..
      Which is main idea of Canbus presence on HU-1205/HU-xyz? To inform central comp. about CDROM rotation speed and radio oscillator deviation?
      To display some car monitoring information?


      Modified by EdinElk at 5:51 PM 10-10-2006

    14. #14

      Re: HU-1205 on V40, 1999, few wires contact places missed, (mrg_Ed)

      Quote, originally posted by mrg_Ed »

      Note that you're looking at the female connector. The contacts in the picture are grouped as:

      A6 A5 A4 A3 A2 A1
      A12 A11 A10 A9 A8 A7

      And this is what they mean:
      A1 - Supply
      A2 - Switched supply
      A3 - Rheostat signal (Signal from the central electronic module (CEM). An increased pulse ratio gives greater luminance. (If there is no rheostat signal, there will be maximum luminance in the audio module)
      A4 - Speed signal (Pulsed signal from the combined instrument panel. Frequency increases with increase in speed.)
      A5 - Back-up (reversing) lamp switch, input signal (The back-up (reversing) lamp switch must be activated when reverse gear is engaged.)
      A6 - Carphone mute
      A7 - n.c.
      A8 - Power ground
      A9 - Remote control signal ON/OFF (Remote control:antenna amplifier (V40), power antenna (S40), Bass speaker (V40) (Integrated power stage).)
      A10 - n.c.
      A11 - n.c.
      A12 - Power ground


      Yet, I found another info about connector, from this page, post #10: http://www.volvospeed.com/vs_f...inear
      Where it says:

      A1 - Permanent battery +
      A2 - Ignition switched power
      A3 - Dashboard light control (Rheostat)
      A4 - Accelerator (for ASC)
      A5 - n/c
      A6 - Telephone Mute
      A7 - CAN H (no idea what this is)
      A8 - CAN L (ditto)
      A9 - Antenna power
      A10 - Ctrl +
      A11 - Ctrl -
      A12 - Ground

      Again, we have at least A10 and A11 becoming interesting


    15. #15

      Re: HU-1205 on V40, 1999, few wires contact places missed, (sebaveh)

      Quote, originally posted by sebaveh »

      A1 - Permanent battery +
      A2 - Ignition switched power
      A3 - Dashboard light control (Rheostat)
      A4 - Accelerator (for ASC)
      A5 - n/c
      A6 - Telephone Mute
      A7 - CAN H (no idea what this is)
      A8 - CAN L (ditto)
      A9 - Antenna power
      A10 - Ctrl +
      A11 - Ctrl -
      A12 - Ground

      Again, we have at least A10 and A11 becoming interesting

      A10 and A11 are used for the central speaker which is not present on all HU models or cars.

      About CAN connection to HU:
      The CANbus is not present on the HU1205.

      For other HU's the CANbus connects to several modules in the car:
      BCM (brake control module) - for volume adjustment depending on speed
      SWM (steering wheel control module) - control via steering wheel buttons
      CEM (central electronic module) - luminance of display and lighting; diagnostics codes from HU to car
      PHM (phone module) - mutes HU when integrated carphone is used
      AEM (accessory electronics module) - HU mute when handsfree is connected; backup gear detection in case of backup warning system (park assist)


    16. #16

      Re: HU-1205 on V40, 1999, few wires contact places missed, (mrg_Ed)

      If anyone else is interested in this, here are photos of my connector: (s40 1,9 diesel, year '03, HU-655)

      Please note, it is mirror-turned!

      Numbers goes like this, and they are written on the connector itself:
      A1 A2 A3 A4 A5 A6
      A7 A8 A9 A10 A11 A12



      As you can see, wiring is all the same. Except that I have wires A7 and A8, but no A6.

      I tried to connect A6 to ground, and I can confirm the phone mute works here too!