Checking the DSA switch

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Connecting Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

Control module connected.
Start the engine.
Read off the status of the switch.
Check the function of the switch: OFF should be displayed when the switch is unaffected. On should be displayed when the switch is activated (pressed in).

Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the function of the switch OK?

YES
Refer to Signal too low. Intermittent fault
NO
Refer to Checking the signal cable