Checking the relay

Fig 1: Identifying Ignition OFF

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• Ignition off.

  Check that relay 2/29 is installed correctly. At the same time check the relay connections, in particular 2/29 #2, for a short circuit to ground as described in Short-circuit to ground, permanent faults . Also check the relay circuit for any open circuits, as described in Open-circuit, permanent faults .

  Additional information: 

  • To replace relay, see Central electronic module (CEM), replacing .
  • To connect the test box, see Connecting the breakout box .
  Fig 2: Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Voltage Display

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Identifying Relays

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there a fault? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing the component