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 near 0 V.
| Terminal, control module | Signal type | Ignition off Active/not active |
Ignition on Active/not active |
Miscellaneous |
|---|---|---|---|---|
| #A1 | Power supply to the sun roof motor | Ubat | Ubat | - |
| #A2 | Sun roof forward, control signal | Ubat /0 V | Ubat /0 V | Pulsed signal when active. |
| #A3 | Sun roof tilt, control signal | Ubat /0 V | Ubat /0 V | Pulsed signal when active. |
| #A4 | Serial communication (Volcano lite) | Ubat | Ubat | The voltage is 0 V - Ubat during communication. Ubat is the default. |
| #A5 | Signal ground | Ulow | Ulow | - |
| #A6 | Power supply to the electronics in the sun roof module (SRM) | Ubat (only for 5 minutes according to conditions on the right) | Ubat | Active when the ignition is off and neither of the front doors have been opened. |
| #A7 | Sun roof auto, control signal | Ubat /0 V | Ubat /0 V | Pulsed signal. Active when switching. |
| #A8 | Sun roof backward, control signal | Ubat /0 V | Ubat /0 V | Pulsed signal when active. |
| #A9 | Power supply to sun roof switch | Ubat /Ubat | Ubat /Ubat | Pulsed signal when active. |
| #A10 | Power ground | Ulow | Ulow | - |