Reading Off And Erasing 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.
This function allows stored diagnostic trouble codes (DTCs), counters and frozen values to be read and erased.
A diagnostic trouble codes (DTCs) can only be erased when all diagnostic trouble codes (DTCs) have been read off at least once and the reason for the fault has been corrected.
When the control module detects a fault the values of certain parameters are frozen and can be read off with the diagnostic trouble code (DTC).
Frozen values for the following parameters can be read off:
- The position of the motors and their speed (via potentiometers)
- The status of the buttons on the control panel.
- Motors activated (front/rear) or not
- Supply voltage to control module
For more information Refer to: Frozen values .