System overview: Signals
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The chart below summarizes the input signals to and output signals from the upper electronic module (UEM). The signal types are divided into directly connected signals, serial communication and controller area network (CAN) communication. The illustration below displays the same information with the Volvo component designations.
| Input signals |
Output signals |
| Directly connected: |
Directly connected:
(power supply unless otherwise stated) |
- Remote control (data)
- Remote control (frequency)
- Remote control (signal strength)
- Photo sensor rear view mirror (x 2).
|
- Roof lighting
- Cargo compartment lighting
- Voltage supply signal EXT.X
- Remote control receiver
- Anti-dazzle in the rear view mirror (optional extra)
- Diodes in the rear view mirror.
|
| Via serial communication: |
Via serial communication: |
- Siren control module (SCM) (16/35) (optional extra)
- Sun roof module (SRM) (4/33) (optional extra)
- Rain sensor module (RSM) (7/149) (optional extra).
|
- Siren control module (SCM) (16/35) (optional extra)
- Sun roof module (SRM) (4/33) (optional extra)
- Rain sensor module (RSM) (7/149) (optional extra).
|
| Via Controller Area Network (CAN) communication: |
Via Controller Area Network (CAN) communication: |
- Central electronic module (CEM) (4/56)
- Driver door module (DDM) (3/126)
- Engine control module (ECM) (4/46)
- Phone module (PHM) (16/60) (optional equipment).
- Supplemental restraint system module (SRS) (4/9).
|
- Accessory electronic module (AEM) (4/78) (optional equipment)
- Central electronic module (CEM) (4/56)
- Driver door module (DDM) (3/126)
- Passenger door module (PDM) (3/127)
- Phone module (PHM) (16/60) (optional equipment).
- Rear electronic module (REM) (4/58).
|
Courtesy of VOLVO CARS OF NORTH AMERICA.