With Manufacturer's Scan Tool

Diagnostic Functions

General
The control module has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system. This system continuously monitors itself and the input and output signals. Diagnostic trouble codes (DTCs) The control module will store a diagnostic trouble code (DTC) if it detects a fault. The control module can store 20 diagnostic trouble codes (DTCs).

If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.

Reading Off The Volvo On-board Diagnostic (OBD) System
Fault data and other information can be read off using the VADIS/VIDA PC which is connected to the data link connector (DLC) via VCT 2000 under the center console cover. The VADIS/VIDA PC communicates with the control module via a standardized interface.

Volvo On-board Diagnostic (OBD) System
With the VADIS/VIDA PC it is possible to:
- read off and erase stored diagnostic trouble codes (DTCs).
- activate components/functions according to certain predetermined patterns
- continuously monitor the values and status of input and output signals
- read off the control module identification.
- program and read off the programmed values.

The following conditions must be met before the Volvo on-board diagnostic (OBD) system is activated:
- the ignition must be on
- the battery voltage must be normal.

Reading And Erasing Diagnostic Trouble Codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.

The on-board diagnostic (OBD) system can identify 20 different faults in the form of diagnostic trouble codes (DTCs). Diagnostic trouble codes (DTCs) can only be erased when all diagnostic trouble codes (DTCs) have been read at least once.