Checking the wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Control Module Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Unplug the central electronic module (CEM) D connector.

  The diagnostic trouble code indicates that communication between the central electronic module (CEM) and the left camera module (LCM) is inoperative. This could be due to a fault in the signal lead between the control modules or a damaged communication unit in one or all of the control modules.

  Check the signal lead between the central electronic module (CEM) and the left camera module (LCM) for an open circuit or short circuit. Also check intermediate connectors.

  Measure between:

  • Central electronic module (CEM) #D41 (41) and left camera module (LCM) #5.

  Remedy as necessary.

  Other information 

  • See Connecting the breakout box
  • See Signal specification
  • Change the left camera module (LCM), see Replacing the mirror
  • See Contents

Was a fault detected? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing the control module