Checking diagnostic trouble codes (DTCs)

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The test cannot be started if diagnostic trouble codes (DTCs) are stored. Therefore it is important to check whether there are any diagnostic trouble codes (DTCs) stored.

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on
Read off diagnostic trouble codes (DTCs)
If diagnostic trouble codes (DTCs) are stored the test must be halted and fault-tracing for diagnostic trouble codes (DTCs) must be carried out first.

Fig 2: Identifying VCT2000 Diagnostic Tool
Courtesy of VOLVO CARS OF NORTH AMERICA.

Are any diagnostic trouble codes (DTCs) stored?

YES
OKAY: Troubleshooting has been completed.
NO
Refer to Checking engine coolant temperature (ECT)