Checking the wiring

Check the wire between central electronic module (CEM) connector #3B and ignition lock connector #15A (#1) for an intermittent open circuit as described in Open-circuit, intermittent faults , and for a short circuit to voltage supply as described in Short-circuit to supply voltage, intermittent faults .

Additional information 

• The voltage should be 0 V with the key in position 0 and I.
• To access/replace the CEM connector, see Central electronic module (CEM), replacing
• To connect a test box, see Connecting the breakout box
• For further information about signals and other values:
  • -2004: Signal specification
  • 2005-: Signal specification

Fig 1: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Power Cable Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.