Checking The Power Supply And Ground For The Infotainment Control Module (ICM)

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS CORPORATION

• Ignition off.

  Check that the fuses for the infotainment control module (ICM) are intact.

  Check the infotainment relay.

  HINT: Diagnostic trouble codes (DTCs) are stored in the central electronic module (CEM) in the event of a fault in the infotainment relay. If diagnostic trouble codes (DTCs) are stored for the relay, fault trace accordingly. 

  Check the cable between the fuse and the infotainment relay. Check for an open-circuit. Check for a short-circuit to ground. Check the cable between the infotainment relay and the infotainment control module (ICM). Check for an open-circuit. Check for a short-circuit to ground.

  If necessary, check the function of the power supply relay by moving it to another position.

  Check the cable between the infotainment control module (ICM) and ground. Check for an open-circuit. Check for a short-circuit to supply voltage.

  Other information: 

  • To access the infotainment control module (ICM) connector, see INFOTAINMENT CONTROL MODULE (ICM), REPLACING
  • To connect the breakout box to the infotainment control module (ICM), see CONNECTING THE BREAKOUT BOX
  • For further information about signals and other values, see SIGNAL SPECIFICATION
  • see CHECKING WIRING AND TERMINALS .
  Fig 2: Identifying Ohm Meter

  Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to CHECKING THE INFOTAINMENT CONTROL MODULE (ICM) 

• NO 

  Refer to CHECKING COMMUNICATION WITH THE INFOTAINMENT CONTROL MODULE (ICM)