OBD connector pinout and control unit

Hello from Tyrol!

I installed a VW TDI PD AJM engine into my Jeep Wrangler, and now I need the pinout diagrams for the OBD connector and the engine control unit (ECU) so that I can read any error codes.

Can someone please help me here? I would be very grateful for that .

Best regards,
Hannes.

Hi,

see:
OBDII connector pinout
and
https://www.obd.wiki/obd-2-buchse

Gremlin wrote:

At Audi, Seat, Skoda, and VW: Pin 1: Terminal 15a (ignition positive, fused). Pin 2: J1850 Bus+ Pin 4: Ground. Pin 5: Signal ground. Pin 6: CAN-High (J-2284) Pin 7: ISO 9141-2 K-line. Pin 10: J1850 bus. Pin 13: Terminal 30a (permanently powered, fused). Pin 14: CAN-Low (J-2284) Pin 15: L-line (or 2nd ISO 9141-2 K-line, depending on the vehicle). Pin 16: Battery (+) voltage. "The main power lines are usually bundled together. Unfortunately, nobody bothers with separate power lines anymore."

The diagnosis is performed on the EDC15 (which is the engine control unit type for the AJM engine) via the K-line, which is pin 16 on the main connector of the engine control unit.

Best regards, Rainer.