Checking The Power Supply And Ground Terminal

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Check that the wiper motor fuse in the engine compartment fusebox (F17) is intact. If the fuse is blown, check the subsequent circuit for a short-circuit to ground. Then replace the fuse.

  Check the cable between the engine compartment fusebox and the wiper motor module (WMM). Check for an open-circuit.

  Check the cable between wiper motor module (WMM) terminal #A2 and ground. Check for an open-circuit. Also check the ground terminal for oxidation.

  Check the signal cable between central electronic module (CEM) terminal #G3 (#3) and wiper motor module (WMM) terminal #A1. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.

  Remedy the cables as necessary.

  Other information 

  • see CONNECTING THE BREAKOUT BOX (2004-07)
  • see SIGNAL DESCRIPTION CENTRAL ELECTRONIC MODULE (CEM) (2004-07)
  • see CONTROL MODULE RELAY BOX PASSENGER COMPARTMENT
  • see WIPER MECHANISM, WINDSHIELD
  • see CHECKING WIRING AND TERMINALS
  Fig 2: Identifying 4-Pin Connector

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to REPLACING THE CONTROL MODULE