Checking The Component

Remove the ignition key from the ignition switch.
Start Reading

Check that none of the switches are activated when the start button is not pressed in.

Press in the start button and check that both switches close (status changes to activated for both switches).

If any problem with the function of any switches is detected, the Start control module (SCU) should be replaced.

Other information
- see IGNITION LOCK
Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Start Control Module (SCU)
Courtesy of VOLVO CARS CORPORATION