Cable for Porsche System Tester 2 / PST2/ KTS 500

[Madmax08154711]

In addtition i found the following.



1999 Porsche Boxster OBDii connector pinout
Pin # OBD-II Purpose Porsche Specific Wire Color Notes
1 - power black/red max 5 Amps
2 - - -
3 - K line #2 orange/blue
4 chassis ground - -
5 sensor 0 volts - brown/blue do not use as a ground
6 - - -
7 ISO 9141-2 K line - orange/black
8 - - -
9 - TN signal violet/green tach wire, 12v square wave
10 - - -
11 - - blue/black
12 - sensor voltage red/yellow/black 5v sensor power
13 - - -
14 - - -
15 ISO 9141-2 L line - red/yellow
16 unswitched power - red/black max 5 Amps

So the question is was about the OBD2 Pin 12 (sensor voltage)

[hemonu]

Originally Posted by Madmax08154711

In addtition i found the following.



1999 Porsche Boxster OBDii connector pinout
Pin # OBD-II Purpose Porsche Specific Wire Color Notes
1 - power black/red max 5 Amps
2 - - -
3 - K line #2 orange/blue
4 chassis ground - -
5 sensor 0 volts - brown/blue do not use as a ground
6 - - -
7 ISO 9141-2 K line - orange/black
8 - - -
9 - TN signal violet/green tach wire, 12v square wave
10 - - -
11 - - blue/black
12 - sensor voltage red/yellow/black 5v sensor power
13 - - -
14 - - -
15 ISO 9141-2 L line - red/yellow
16 unswitched power - red/black max 5 Amps

So the question is was about the OBD2 Pin 12 (sensor voltage)

pin 12 is not connected in the Boxster 00/01 wiring diagramms and I left it open.

[Madmax08154711]

Originally Posted by hemonu

pin 12 is not connected in the Boxster 00/01 wiring diagramms and I left it open.

That is what I found

[hemonu]

Originally Posted by Madmax08154711

That is what I found

Are you sure, this is for a 986? Pin 6 and pin 14 looks like Can bus, which is used by the newer generation cars and Piwis software, but not pst2. Anyway there is only 8 pins in the amphenol connector of the pst2 and 5V is not in there.

[Madmax08154711]

I build the following cable and did a test with a PST2 and an 2000 Boxster S and everything seems ok.

[hemonu]

Originally Posted by Madmax08154711

I build the following cable and did a test with a PST2 and an 2000 Boxster S and everything seems ok.

Be careful! With this cable you bridge Terminal 30 and Terminal 15 inside the AMP connector. If you plug the cable with ignition switched OFF you will energise Terminal 15, which may easily blow some fuse(s) or do other harm. You better do only one of the two terminals to AMP contact 5. It doesn't matter which one.