arm755:
This clears it up...
However, I would like you to make a couple of measurements with a DVM.
1. Set the DVM to DC Volts mode to read ~15V. Put the red probe on the "BSI/ECU" signal. Put the black probe on car's ground (chassis ok). Measure the open-circuit voltage and tell us...
2. Set the DVM to DC mA mode, start on the 1A scale. Put the red probe on the "BSI/ECU" signal. Put the black probe on car's ground (chassis ok). Measure the current. You may have to make the meter more sensitive. Do not be surprised if you turn on the flashers while making this test. Tell us the current reading with probes connected.