National Instruments CAN 372139B-01 - Manual (Page 241)

Chapter 6 Automotive Diagnostic Command Set API for C
© National Instruments Corporation 6-77 Automotive Diagnostic Command Set User Manual
UDS (DiagOnCAN) Services
ndUDSClearDiagnosticInformation
Purpose
Executes the UDS ClearDiagnosticInformation service. Clears selected Diagnostic Trouble
Codes (DTCs).
Format
long ndUDSClearDiagnosticInformation(
TD1 *diagRef,
unsigned long groupOfDTC,
LVBoolean *success);
Input
diagRef
Specifies the diagnostic session handle, obtained from ndOpenDiagnostic and passed
to subsequent diagnostic functions. Normally, it is not necessary to manually manipulate
the elements of this struct.
groupOfDTC
Specifies the group of diagnostic trouble codes to be cleared. The values are application
specific. The following value has a special meaning:
0xFFFFFF All DTCs
Output
success
Indicates successful receipt of a positive response message for this diagnostic service.
Return Value
The return value indicates the function call status as a signed 32-bit integer. Zero means the
function executed successfully. A negative value specifies an error, which means the function
did not perform the expected behavior. A positive value specifies a warning, which means the
function performed as expected, but a condition arose that may require attention.
Use the ndStatusToString function to obtain a descriptive string for the return value.