Checking the wiring

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

Additional information 

• The voltage should be the same as the battery voltage with the key in position 0, I, II and III.
• 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.