Signal specification
Upper electronic module (UEM)
Connector A, terminals #A1-#A22
The following values are measured between the relevant terminal in column 1 and terminal #A20 (signal ground) unless otherwise stated.
Note! Check the ground terminals before starting to take readings with the breakout box.
U = DC in volts (V).
Ubat = battery voltage in volts (V).
Ulow = Voltage close to 0 V.
Sun roof (sun roof module (SRM))
Connector A, terminals #A1-#A10
The following values are measured between the relevant terminal in column 1 and terminal #A5 (signal ground) unless otherwise stated.
U = DC in volts (V).
Ubat = battery voltage in volts (V).
Ulow = Voltage close to 0 V.
Rain sensor
Connector A, terminals #A1-#A5
U = DC in volts (V).
Ubat = battery voltage in volts (V).
Ulow = Voltage close to 0 V.
