Checking Components And Wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Switch off the ignition. Wait 10 seconds
• Disconnect the connectors from the supplemental restraint system module (SRS)
• Disconnect connector F from the central electronic module (CEM).
  CAUTION:

  Do not touch the terminal pins in the supplemental restraint system module (SRS), the central electronic module (CEM) and the phone module (PHM). There is a risk of static discharge. This could damage the supplemental restraint system module (SRS), the central electronic module (CEM) and the phone module (PHM).

  Check the connectors to the supplemental restraint system module (SRS) and the central electronic module (CEM). Check for damage to pins and terminals in the connectors. Check for contact resistance in the connectors.

  Remedy as necessary.

  Check the cable between the supplemental restraint system module (SRS) and the central electronic module (CEM). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.

  Check the cable between:

  • Supplemental restraint system module (SRS) terminal #A26 and central electronic module (CEM) terminal F#12 (#12).

  Remedy as necessary.

  • Disconnect connector A from the central electronic module (CEM).

  Check connector A from the central electronic module (CEM). Check for damage to pins and terminals in the connectors. Check for contact resistance in the connector.

  Remedy as necessary.

  Check the internal cable in the central electronic module (CEM). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.

  Check the cable between:

  • Central electronic module (CEM) terminals F#12 (#12) and A#33 (#33).

  Remedy as necessary.

  • Disconnect connector A from the phone module (PHM).

  Check connector A from the phone module (PHM). Check for damage to pins and terminals in the connectors. Check for contact resistance in the connector.

  Remedy as necessary.

  Check the cable between the central electronic module (CEM) and the phone module (PHM). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.

  Check the cable between:

  • Central electronic module (CEM) terminals A#33 (#33) and phone module (PHM) terminals #A17.

  Remedy as necessary.

  If no fault is found, continue fault-tracing from the central electronic module (CEM) and the phone module (PHM).

  Other information 

  • see CONNECTING THE BREAKOUT BOX
  • see SIGNAL SPECIFICATION (2004-2006) , or SIGNAL SPECIFICATION (2007-2011)
  • see AIR BAG SUPPLEMENTAL RESTRAINT SYSTEM (2008, 2009, 2010, 2011)
  • see CONTROL MODULE RELAY BOX PASSENGER COMPARTMENT
  • see PHONE MODULE (PHM) (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011)
  • see WIRING HARNESS SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
  • see CHECKING WIRING AND TERMINALS

Continue when the fault has been remedied. 

• Continue 

  Refer to VERIFICATION