Mobile Phone Car kit Integration
In this section I will tell you how you can connect your proprietary car hands free kit such as the Sony Ericsson HCB-700 to the factory fit Symphony CD Head unit without using an after market Radio Mute kit.
Parts you will need are -
Your choice of car kit
6 pin Multi Connector (Yellow) VAG Part Number 4A0 972 643 (Approximately £2.05 each)
6 pin Multi Connector (Green) VAG Part Number 4A0 972 643A (Approximately £2.05 each)
6 pin Multi Connector (Blue) VAG Part Number 4A0 972 643B (Approximately £2.05 each)
Single Wires VAG Part Number 000 979 131 (Only sold in quantities of 5 approximately £5.25 for the 5 items)
Single Wires VAG Part Number 000 979 133 (Only sold in quantities of 5 approximately £5.25 for the 5 items)
3 Scotchlok style connectors
3 Inline crimps
It is possible to only use the Green connector however the three do clip together and make a better fitment. If you have an OEM CD Changer installed then you will already have the Blue connector in place.
Tools you will need are -
Radio removal keys
Pliers to fit Scotchlok connectors
Wire strippers and cutters
Decent crimping tool for inline crimps
Method -
I am assuming that you have fitted the hardware of your car kit and now have only the connections to make. The car kit will probably require a permanent live, a switched live, an earth (GND), a telephone mute control and the two speaker connections.
The connections should be made as follows -
Telephone Mute Control - Connect to Black 8 Pin Multi Connector Pin 2 using one end of wire 000 979 133 inline crimped to your mute lead. There is a small purple locking tab which should be carefully prised out of the plug a little bit, then push the termination into the plug and push the purple tab back in.
Switched Live - Connect to cable from Black 8 Pin Multi Connector Pin 4 using a Scotchlok connector.
Permanent Live - Connect to cable from Black 8 Pin Multi Connector Pin 7 using a Scotchlok connector.
Earth - Connect to cable from Black 8 Pin Multi Connector Pin 8 using a Scotchlok connector.
Hands Free Speaker +ve - Connect to Green 20 Pin Multi Connector Section Pin 7 using one end of wire 000 979 131 inline crimped to your speaker +ve lead and push the termination into the plug.
Hands Free Speaker -ve - Connect to Green 20 Pin Multi Connector Section Pin 12 using one end of wire 000 979 131 inline crimped to your speaker -ve lead and push the termination into the plug.
Enabling the phone menu -
To enable sound through the car speakers you must first enable the telephone audio input and telemute functions of the Symphony Head unit. To do this, with the radio switched on press and hold the TP button to enter the main menu. Using the left and right buttons (< or >) select the phone option and then rotate the volume control to enable it. Again, using the left and right buttons select the phone in option and enable it. At this point you can also set the phone volume level.
View of pin layout -
Contact assignment of multipin plug connections A, B, C on rear of radio Radios MS 202, 402, 502 and Symphony -
20 Pin Multi Connector Yellow Section
1 - Line Out - Left Rear
2 - Line Out - Right Rear
3 - Line Out - Earth
4 - Line Out - Left Front
5 - Line Out - Right Front
6 - Switched Positive for Sound Amplifier
20 Pin Multi Connector Green Section
7 - Telephone Audio Input Signal - TEL +ve
8 - Second display, CLOCK (for radio sets with CAN databus communication CAN High)
9 - Second display, DATA (for radio sets with CAN databus communication CAN Low)
10 - Second display, ENA (not assigned for radio sets with CAN databus communication)
11 - Remote control, REM (not assigned for radio sets with CAN databus communication)
12 - Telephone Audio Input Signal - TEL -ve
20 Pin Multi Connector Blue Section
13 - CD changer - DATA IN
14 - CD changer - DATA OUT
15 - CD changer - CLOCK
16 - CD changer - Voltage Supply Terminal 30
17 - CD changer - Control Signal
18 - CD changer - Left and Right Channel Earth
19 - CD changer - Left Channel
20 - CD changer - Right Channel
8 Pin Multi Connector Brown
1. Right Rear Speaker +ve
2. Right Rear Speaker -ve
3. Right Front Speaker +ve
4. Right Front Speaker -ve
5. Left Front Speaker +ve
6. Left Front Speaker -ve
7. Left Rear Speaker +ve
8. Left Rear Speaker -ve
8 Pin Multi Connector Black
1 - 'Gala' function - Volume Adaptation
2 - Mute - Telephone Mode
3 - Self Diagnosis - K wire
4 - Connection for Ignition Key Controlled On/Off
5 - Terminal 30 - Battery Positive (not assigned to Symphony)
6 - Terminal 58b - Illumination
7 - Terminal 30 - Battery Positive
8 - Terminal 31 - Ground
Disclaimer
This information is provided by other owners based on their experiences and knowledge. I can offer no guarantees or warranty nor endorse any changes or repairs you make to your car based on the information given here. Everything you do is entirely at your own risk. You should not undertake anything contained within these pages if your are neither confident or competent and do not have the right tools to do so.
Copywrite
This information is provided by me to assist owners in modifying and repairing their car, all content belongs to me unless otherwise indicated and the owner of that content has given permission for it to be used. You are permitted to read this content but are not allowed to copy any part of it without first contacting me directly.
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