Diagnostic Functions
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.
The Volvo on-board diagnostic (OBD) system functions are activated by pressing the REC button on the unit. The buttons may first be pressed 0.5 seconds after the ignition has been turned on (positions I or II) and then the required combination pressed within following 2.5 seconds .
NOTE:
If a diagnostic trouble code (DTC) is stored, the indicator LED will flash once. Only start pressing the buttons after the flash.
The following functions are available:
- reading off diagnostic trouble codes (DTCs) (initiated by pressing two pushes of the button)
- self-adjustment of the damper motors (initiated by three pushes of the button)
- erasing diagnostic trouble codes (DTCs) (initiated by four pushes of the button).
Refer to the picture for information on how to initiate the sequences and how to interpret the flashes from the indicator LED.
NOTE:
The REC button must be pressed from the out position (off) to the in position (on) in order for it to be counted as a valid entry.
NOTE:
To ensure the diagnostic functions are activated in the correct way always follow this working method:
- ignition on
- wait approximately 3 seconds
- ignition off
- ignition on again
- wait for 0.5 seconds. If a diagnostic trouble code (DTC) is stored, the indicator LED will flash once. Only start pressing the buttons after the flashing
- activate the required diagnostic function within 2.5 seconds.
To activate diagnostics:
- the ignition must be on
- battery voltage normal.