Inspection Using an Oscilloscope (Reference) Panel light control
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of MAZDA MOTORS CORP.
- Terminal connected: J-03 AI (+)-Negative battery terminal
- Oscilloscope setting: 2 V/DIV (Y): 5 ms/DIV (X), DC range
- Measurement condition: Panel light control switch turned to the darkest position.