System Overview: Signals
The table below summarizes input and output signals to and from the climate control module. 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: Sun sensor (7/12), (ECC) |
Directly connected: Blower fan motor (6/28), control signal |
| Blower fan motor (6/28), diagnostic signal | Damper motors for electronic climate control (6/48, 6/95-96, 6/102-103), control signal |
| Evaporator temperature sensor (7/41), control signal | Damper motors for manual climate control (6/48, 6/69, 6/95-96), control signal |
| Air quality sensor (7/159), (ECC, option) | Sun sensor (7/12), (ECC) |
| Via Controller Area Network (CAN): | Via Controller Area Network (CAN): |
| The central electronic module (CEM) (4/56) | The central electronic module (CEM) (4/56) |
| The engine control module (ECM) (4/46) | Driver's door module (DDM) (3/126) |
| Rear electronic module (4/58) | Passenger door module (3/127) |
| Brake control module (ABS-control module) (4/16) | Brake control module (ABS-control module) (4/16) |
| Driver's door module (DDM) (3/126) | Rear electronic module (4/58) |
| Passenger door module (3/127) | The engine control module (ECM) (4/46) |
| Upper electronic module (4/70) | |
| Steering wheel module (3/130) |