Reading Off Volvo On-Board Diagnostic (OBD) System

Reading Off Volvo On-board Diagnostic (OBD) System






Fault data and other information can be read off using the Volvo Scan Tool (ST) which is connected to the data link connector (DLC) under the center console cover. The Volvo Scan Tool (ST) communicates with the engine control module via a standardized interface.

Volvo on-board diagnostic (OBD) system

Using the Volvo Scan Tool (ST) it is possible to:
- read off and erase diagnostic trouble codes (DTCs) stored
- activate components/functions according to predetermined patterns
- Continuously monitor the value and status of input and output signals
- carry out a self test on the system components.
- read off control module identification.

To activate the Volvo on-board diagnostic (OBD) system:
- ignition on
- battery voltage normal.

NOTE: With the Volvo on board diagnostic system (OBD) activated the screen will always fold up, without showing any information. The RTI system regains normal function when the diagnosis is finished.

Connecting the Volvo Scan Tool (ST)




- Ignition OFF.
- Install memory cassette.
- Connect the Volvo Scan Tool (ST) cabling to the Data Link Connector (DLC) under the center console cover.
- Ignition ON.
- Power up the Volvo Scan Tool (ST).
- Select language, car, group of functions.
- Select system.

- Select DIAGNOSTIC TEST to read-off and erase diagnostic trouble codes (DTCs), activate components/functions.
- Select MONITOR TEST to continuously read off the values and status of control module input and output signals.
- Select SYSTEM TESTS to activate a system test.
- Select READ CM: ID to read control module P/N.