Operation CHARM: Car repair manuals for everyone.

Test Point 39

Fault Code 40
Signal converter, coil fault.

Check the transponder coil:
- Disconnect the plug on the signal converter.
- Ohmmeter at pins 1 and 2
Display: 20 - 25 ohm at 20 °C
Ohmmeter at pin 1 and ground
Display: infinity ohm