Pinouts >  Audi, Porsche or Volkswagen Head units  >  Porsche pinouts
2003-2009 years
This pinout is associated with 5 compatible devices or models. Show them>

PCM 2

Plug A
1 - Speed signal
2 - Free
3 - Free
4 - Terminal 30
5 - Terminal 30 for windscreen antenna
6 - Free
7 - Free
8 - Terminal 31

Plug B
1 - Loudspeaker, rear right +
2 - Loudspeaker, rear right -
3 - Loudspeaker, front right +
4 - Loudspeaker, front right -
5 - Loudspeaker, front left +
6 - Loudspeaker, front left - 
7 - Loudspeaker, rear left +
8 - Loudspeaker, rear left-
Note: Plug B is assigned only if no amplifier is installed.

Plug C
1 - Lineout, rear left
2 - Line out, rear right
3 - AF ground
4 - Line out, front left
5 - Line out, front right
6 - Terminal 30 for amplifier
7 - Control lead for CD changer
8 - Terminal 30 for CD changer
9 - Free 
10 - Data lead
11 - Clock lead 
12 - Reset lead
13 - Free
14 - Free
15 - Free
16 - Free
17 - Free
18 - CD AF ground
19 - CD AF, left
20 - CD AF, right
Note: Plug C consists of 3 parts.
Pins 1 to 6: yellow housing.
Pins 7 to 2: green housing.
Pins 13 to 20 : blue housing.

Pins 1 to 6 are the loudspeaker outputs to the amplifier. They are assigned only if an amplifier is installed.
Pins 7 to 12 are the control leads for the CD changer.
Pins 18 to 20 are the loudspeaker outputs of the CD changer.
Pins 7 to 20 are assigned only if a CD changer is installed.

D - Antenna lead
E - Fuse

Plug I
1 - Video signal, red
2 - Video signal, green
3 - Free
4 - Free
5 - Free
6 - Terminal 31
7 - Free
8 - Free
9 - Free
10 - Terminal 30 for navigation
11 - Terminal 58 d
12 - Free
13 - Terminal 30
14 - Video signal, blue
15 - Video signal synchronization
16 - Video signal ground
17 - Free
18 - Free
19 - Terminal 31
20 - To combination plug III pin 6
21 - From combination plug III pin 11
22 - Free
23 - Fuel consumption signal
24 - Speed signal
25 - Free
26 - Terminal 30

Plug II
1 - Diagnosis lead
2 - Terminal 15
3 - Terminal 86 s
4 - Data lead to navigation unit
5 - Free
6 - DSP (amplifier) ground
7 - Handsfree microphone ground
8 - Handset microphone
9 - Handset speaker
10 - Terminal 30, handset
11 - Free
12 - Voice output ground
13 - Voice output
14 - DSP (amplifier)
15 - Data lead from the heater / A/C unit
16 - Free
17 - Data lead from the navigation unit
18 - Free
19 - Free
20 - Handsfree microphone
21 - Handset ground
22 - Handset on-hook contact
23 - Free
24 - Free
25 - Free

36 (20+8+8) pin Head Unit / Car Stereo ISO connector layout
36 (20+8+8) pin Head Unit / Car Stereo ISO connector
at the car stereo
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