Checking Wiring

Check the cable between central electronic module (CEM) connector #20A and ignition switch connector #50 for an intermittent open-circuit according to OPEN-CIRCUIT, INTERMITTENT FAULTS and for a short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE, INTERMITTENT FAULTS .

Other information 

• The voltage must be 0 V if the key is in position 0, I or II.
• For -2004, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING .
• For 2005-, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING .
• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• -2004: SIGNAL SPECIFICATION
• 2005-: SIGNAL SPECIFICATION

Fig 1: Breakout Box

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

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

Courtesy of VOLVO CARS CORPORATION