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System Overview: Signals

The following table summarizes the input signals to and output signals from the phone module (PHM). The signal types are divided into directly connected signals, MOST and CAN communication. The illustration below (Fig 1) displays the same information with the Volvo component designations.

Input signals Output signals
Directly connected:  Directly connected: 
(Power supply unless otherwise stated)
  • SIM card holder (16/140)
  • Antenna signal, carphone (16/47)
  • Microphone, handset (16/62)
  • Switch for Volvo On Call including reserve microphone (only for Volvo On Call) (3/267)
  • Collision output signal from the supplemental restraint system module (SRS) (4/9) (applies only to phone modules (PHM) with Volvo On Call).
  • Antenna signal, carphone (16/47)
  • Loudspeaker, handset (16/62)
  • Reserve speaker (only for Volvo On Call).
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Central electronic module (CEM) (4/56)
  • Supplemental Restraint System Module (SRS) (4/9)
  • Driver door module (DDM) (3/126)
  • Passenger door module (PDM) (3/127)
  • Climate Control Module (CCM) (3/112)
  • Brake control module (BCM) (4/16)
  • Driver information module (DIM) (5/1).
  • Central electronic module (CEM) (4/56)
  • Driver information module (DIM) (5/1).
Via MOST communication:  Via MOST communication: 
  • Infotainment control module (ICM) (16/1.2)
  • Audio control module (AUD) (microphone sound during hands free usage) (16/105)
  • Integrated Audio Module (IAM) (16/1) (microphone sound during hands free usage when Audio module (AUD) is not installed, applies from 2008).
  • Global positioning system module (GPS) (16/139) (vehicle position, applies only to phone modules (PHM) with Volvo On Call) (-2007).
  • Multimedia module (MMM) (16/108) (vehicle position, only applies to phone modules (PHM) with Volvo On Call) (2008-).
  • Infotainment control module (ICM) (16/1.2)
  • Audio control module (AUD) (speaker sound during hands free usage) (16/105).
  • Integrated Audio Module (IAM) (16/1) (microphone sound during hands free usage when Audio module (AUD) is not installed, applies from 2008).
Fig 1: Identifying PHM And Components
GLL160295Courtesy of VOLVO CARS CORPORATION