Checking Component And Wiring

Check the signal cable between the central electronic module (CEM) and the alarm LED. Check for an open-circuit. Check for a short-circuit to supply voltage.

Take readings between:

• Central electronic module (CEM) terminal #B5 (#5) and alarm LED terminal #3.

Check the ground lead between the central electronic module (CEM) and the alarm LED. Check for an open-circuit. Check for a short-circuit to supply voltage.

Take readings between:

• Central electronic module (CEM) terminal #B28 (#28) and alarm LED terminal #5.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX (2008, 2009, 2010, 2011)
• see SIGNAL DESCRIPTION CENTRAL ELECTRONIC MODULE (CEM) (2008, 2009, 2010, 2011)
• see LOCATION OF COMPONENTS (2010, 2011)
• see SUN SENSOR
• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Twilight Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue when the fault has been remedied. 

• Continue 

  Refer to VERIFICATION