K-Line

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Only on 1.6/2.0 without immo the K-line from ECU is connected directly to the K-line pin on OBD2 or Multipurpose Check Connector!! See below for some details.

This is not yet an article of course - I just wanted to write this down somewhere where it won't disappear in 2 weeks.

- If you have 1.6 or 2.0 without immobilizer installed:

Good news! Your K-Line pins (OBD2/MCC) are connected directly to the K-line pin on the ECU (2.0 - 77)

- If you have 1.6 or 2.0 with immobilizer installed:

Your K-Line pins (OBD2/MCC) are connected to BCM's "Diagnosis" pin (BCM-IM, pin 19). THERE IS NOTHING CONNECTED TO K-LINE PIN AT THE ECU!! (2.0 77). Instead, all K-line stuff is connected to the ECU's W-Line (2.0 - 47)

- If you have 2.7 with or without immobilizer installed:

Your K-Line pins (OBD2/MCC) are connected to BCM's "Diagnosis" pin (BCM-IM, pin 19). Your K/Immo-Line pin at the ECU (C133-1, pin 3) is connected to BCM's "Immo W-line" (BCM-IM, pin 20). 2.7 ECUs don't have a separate K and W line - it's all integrated in one pin, you don't have nothing to worry about.