Checking the control module for open-circuits

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Remove the 15i power supply relay
Ignition on.
Check the driver circuit for the relay coil for an open-circuit as follows: activate the relay driver. Measure the voltage between terminals #1 and #2 on the relay base.

The voltage between terminals #1 and #2 should be battery voltage.

If the value deviates excessively, check the voltage between terminal #2 and the battery voltage and between terminal #1 and ground. Both should equal battery voltage.

HINT: Do not forget to check that the power supply to the control module is OK.

Other information
- To access and replace the relay, see Central electronic module (CEM), replacing
- For further information about the fuses and relays, see the Wiring Diagram
- See Checking wiring and terminals .
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected?

YES
Refer to Verification
NO
Refer to Checking the control module for short-circuits