Checking display activation
- Ignition off.
- Connect Volvo Scan Tool (ST) to the adapter box and wiring.
- Connect Volvo Scan Tool (ST) to the data link connector (DLC).
- Ignition on.
Turn on power supply using the switch on the adapter box.
Check the Volvo Scan Tool (ST) display.
Does the display light?
- YES
Refer to Fault-tracing information
- NO
Refer to Try a new Volvo Scan Tool (ST)