Diagnostic Functions

Diagnostic functions

General
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output signals.

Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
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 and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.

Reading off the parameter values
With this function, the values and status of parameters can be read from the driver door module (DDM) and passenger door module (PDM).
For more information on the different parameters, see Vehicle communication information under Specifications, other.

Activating components and functions
This function makes it possible to activate components/functions in the driver door module (DDM) and passenger door module (PDM).
For more information on activations, see Vehicle communication information under Specifications, other.

Reading off and programming data
No customer related programming is available in the control module.

Note! The position of the windows must be initiated after control module replacement. The window must be in its top position for it to be possible to initiate the window.

Reading off the control module identification
The control module can be identified by means of reading off a number of codes.
The codes contain information about the control module:
- hardware P/N (control module without software)
- P/N for the rear door control module
- hardware serial number (control module without software)
- serial number for the hardware for the rear door control module
- software P/N
- diagnostic software P/N