Checking wiring

Check the cable between central electronic module (CEM) connector #1B and ignition switch S-supply #3 for an intermittent open-circuit according to Open-circuit, intermittent faults and for a short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information 

• The voltage must be the same as battery voltage if the key is in positions 0, I, II or III.
• To access / replace the central electronic module (CEM) connector, see Central electronic module (CEM), replacing
• To connect the breakout box, see Connecting the breakout box
• For further information about signals and other values, see Signal specification

Fig 1: Identifying Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Central Electronic Module (CEM) Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.