Test 1/Fault Code 11

Test point 1
Control unit faulty
Fault code 11

Replace control unit.
Caution: Check the following items before replacing the control unit:

- Check if interference caused by ignition voltage is present (e.g. due to incorrectly fitted plug connectors).

- Check if any potential differences caused by contact resistance are present (due to missing or poor grounding).

Important: Poor grounding may be present not only on the components affected but also on other important ground points, e.g. transmission ground contact from starter to body.




- Is ground present at control unit connector PIN 28, 29? These wires are connected to ground point II (luggage compartment, front right).