Pattern 1

WARNING: This page is about a different car, the 2013 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

LF control unit: L (+) <==> body ground (-)
Oscilloscope setting: 2 V/DIV (Y), 100 ms/DIV (X), DC range

Fig 1: LC Control Unit Voltage Signal Pulse