XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
Steering Mounted Controls Communication Module: Description and Operation
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output
Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the control module detects a fault. 35 diagnostic trouble codes (DTCs) can be stored. A fault which is
detected in the most recent operating cycle is defined as permanent. Other faults which are detected are defined as intermittent.
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 input and output signals
This function can be used to continuously read off the status of the control module's input and output signals.
For further information about parameters, see See: Testing and Inspection/Pinout Values and Diagnostic Parameters/Signal Specification, Steering
Wheel Module (SWM)
Reading off extended diagnostic trouble code (DTC) information
This function can be used to read parameters, status identifiers and counters stored at the same time as a diagnostic trouble code (DTC). These are called
For further information, see Frozen values steering wheel module, description See: Testing and Inspection/Scan Tool Testing and Procedures/Frozen
Values Steering Wheel Module, Description.
Reading the control module identification
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain the following information about the control module:
hardware P/N (control module without software)
hardware serial number (control module without software)
diagnostic software P/N.