Checking the power supply wiring

Check the wiring between the central electronic module (CEM) #2E (#B22), to the relevant courtesy lighting #2. Check for an open-circuit. Check for a short-circuit to ground.

There are four light bulbs; left front, right front, left rear and right rear. The connector for the relevant courtesy lighting is displayed as shown.

Remedy as necessary.

Other information: 

• To connect the breakout box, see Connecting the breakout box
• For information about signals:
  • -2004: see Signal specification
  • 2005-: see Signal specification
• To access or replace the front courtesy lighting, see Courtesy lighting, front, replacing
• To access or replace the rear courtesy lighting (-2004), see Courtesy lighting, rear, replacing
• To access or replace the rear courtesy lighting (2005-), see Courtesy lighting, rear, replacing
• See Checking wiring and terminals .

Fig 1: Electronic Throttle Module (ETM) Connector Terminal Identification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the courtesy lighting function? 

• YES 

  Refer to Verification 

• NO 

  Refer to Light switch replacement