Checking For Open-Circuits And Short-Circuits

Check the cable between the control module terminal #19 and roof lamp module terminal #5A. Check for an open-circuit. Check for a short-circuit to ground.

Replace the cable if a fault is found.

Try new bulbs in the roof lamp module if no fault is found.

Other information: 

• For further information about signals and other values, see SIGNAL DESCRIPTION, UPPER ELECTRONIC MODULE (UEM)
• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• To replace bulbs in the roof lamp module, see INTERIOR LIGHTING, REPLACING
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to VERIFICATION