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. The control module stores any diagnostic trouble codes (DTCs). The diagnostic trouble codes (DTCs) can then be read using VIDA. Information is presented in VIDA in the same way as with other diagnostic systems.

Fault indication
If a fault occurs in the parking assistance system the driver is warned via the driver information module (DIM) when the information lamp lights and a warning message is displayed.
A VIDA station must be connected to the data link connector (DLC) in order to identify the source of the fault.

Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store a number of diagnostic trouble codes (DTCs).
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been stored in the control module, information about the fault remains in the control module. If a fault is no longer permanent the diagnostic trouble code (DTC) remains as intermittent.

Reading and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
This function can also be used to read off whether the fault is still present (permanent) or whether it has now ceased (intermittent) after the diagnostic trouble code (DTC) has been stored.
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 parameters
Data can be read off from the parking assistance module (PAM) using this function.

Battery voltage
Reads off the level of the power supply to the control module.
Distance behind
Reads off the distance to the detected object behind.
Distance in front
Reads off the distance to the detected object in front.

Reading off control module identification
VIDA identifies control modules by reading off a number of codes from the control module memory. The codes contain information about the control module:
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- software number, diagnostics.