2008 Volvo XC70FACTORY OEM SERVICE PROCEDURE

System Overview: Signals

The table below summarizes the input signals to and output signals from the climate control module (CCM). The signal types are divided into directly connected signals, LIN and CAN communication. The illustration below displays the same information with the Volvo component designations.

Input signals Output signals
Directly connected:  Directly connected: 
  • Passenger compartment temperature sensor (7/10) (does not apply to S60 and V60)
  • Evaporator temperature sensor (7/41).
  • Humidity sensor (AQS) (7/159), option (only ECC)
  • Blower fan (6/28)
  • Blower fan (6/28)
Via LIN communication:  Via LIN communication: 
  • Seat heating module (SHM) (9/12-15)
  • Humidity sensor (7/90), option (only ECC)
  • Damper motor module (DMM) (6/48, 6/95-96, 6/102-103) (ECC)
  • Damper motor module (DMM) (6/48, 6/95, 6/103) (ETC)
  • Switch, rear seat heaters (3/65) (option)
  • Interior rear-view mirror control module (IEC) (8/48)
  • Seat heating module (SHM) (9/12-15)
  • Humidity sensor (7/90), option (only ECC)
  • Damper motor module (DMM) (6/48, 6/95-96, 6/102-103) (ECC)
  • Damper motor module (DMM) (6/48, 6/95, 6/103) (ETC)
  • Switch, rear seat heaters (3/65) (option)
  • Interior rear-view mirror control module (IEC) (8/48)
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Central electronic module (CEM) (4/56)
  • Infotainment control module (ICM) (3/281)
  • Engine control module (ECM) (4/46)
  • Brake control module (BCM) (4/16)
  • Steering wheel module (SWM) (3/130)
  • Driver door module (DDM) (3/126)
  • Passenger door module (PDM) (3/127)
  • Rain sensor module (RSM) (7/149) via central electronic module (CEM) (4/56)
  • Central electronic module (CEM) (4/56)
  • Infotainment control module (ICM) (3/281)
  • Engine control module (ECM) (4/46)
  • Brake control module (BCM) (4/16)
  • Steering wheel module (SWM) (3/130)
  • Driver door module (DDM) (3/126)
  • Passenger door module (PDM) (3/127)
  • Rain sensor module (RSM) (7/149) via central electronic module (CEM) (4/56)
Fig 1: Identifying Input Signals And Output Signals From Climate Control Module (CCM)
GLL167682Courtesy of VOLVO CARS CORPORATION
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