Checking the power supply and ground for the driver door module (DDM)

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  HINT: For information about fuse numbers and the numbering of terminal pins, see appropriate wiring diagram for the relevant car model. 

  Check that the fuse for the driver door module (DDM) in the passenger compartment fusebox is intact.

  Connect a voltmeter between the power supply cable to the control module and ground.

  The voltage between the control module power cable and ground must be battery voltage when the ignition is off.

  Check the cable between the control module and ground: the left or right front seat support. Check for a short-circuit to ground. Check for an open-circuit.

  Other information: 

  • To access the driver door module (DDM), see Driver's door module / passenger door module (DDM/PDM), replacing
  • To connect the breakout box, see Connecting the breakout box
  • For further information about signals and other values, see Signal specification
  • To check the wiring and connections, see Checking wiring and terminals .
  Fig 2: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Locating Passenger Compartment Fusebox

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to Checking the function of the driver door module (DDM) 

• NO 

  Refer to Signal missing