V70 2.4T L5-2.4L Turbo VIN 58 B5244T3 (2002)
Steering Column Control Module: Description and Operation
Diagnostic Functions
General
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)
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)
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
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.
Reading Off Extended Diagnostic Trouble Code (DTC) Information
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
frozen values.
Reading the Control Module Identification
Reading The Control Module Identification
VADIS 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:
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hardware P/N (control module without software).
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hardware serial number (control module without software).
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software P/N.
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diagnostic software P/N.
Downloading Software and Replacing the Control Module
Downloading Software And Replacing The Control Module
New software can be downloaded into the steering wheel module (SWM). When ordering software, the hardware and the software in the car is compared
to the data in the Volvo central database. If the comparison is OK the software is downloaded to the control module.
If the comparison between the car and Volvo central database is not OK, the database is updated with the car configuration. When this is complete the
software is downloaded.
The control module is integrated in the steering wheel bracket. The steering wheel must be removed to replace the control module.