General Specification Electrical Function gmw3110 General Motors Local Area Network Enhanced Diagnostic Test Mode Specification

GM WORLDWIDE ENGINEERING STANDARDS 
GMW3110 
© Copyright 2010 General Motors All Rights Reserved 
February 2010 
Page 104 of 336 
normal_message_transmission_status 

ENABLED /* cancel out mode $28 */ 
programming_mode_entry_ok 

NO 
high_speed_mode_entry_ok 

NO 
CALL appl_Comm_Init() /*application function to do any necessary cleanup */ 
CALL hnd_Invoke_Comm_Init() /* GMLAN Handler function executed in Comm Init state */ 
CALL APPL_ACTIVATE_LOCALDIAGVN() /* Application function call to reactivate diagnostic local 
VN */ 
ENDIF 
IF (permanent diagnostic CAN Identifiers are programmed) THEN 
send ($60) /* send acknowledgement */ 
ELSE 
diagnostic_responses_enabled 

NO 
ENDIF 
ELSE 
TransferData_Allowed 

NO 
programming_mode_active 

NO 
/*************************************************************************** 
* Reset CAN Protocol Device if high speed mode was active before doing S/W Reset 
****************************************************************************/ 
IF (high_speed_mode_active = YES) 
high_speed_mode_active 

NO 
CALL hnd_Init_CAN_Device() /* handler call to reinit the baud rate in order to prevent bus errors 
which could be caused if reset times differ greatly*/ 
ENDIF 
/*************************************************************************** 
* check to see if any diagnostic information which is retained across multiple 
* drive cycles needs to be reinitialized before performing a software reset 
****************************************************************************/ 
DTCs_Enabled_In_Device_Control
 

NO 
IF (Diag_Services_Disable_DTCs = TRUE) THEN 
Diag_Services_Disable_DTCs 

FALSE 
CALL Diag_App_Reset_Vars() /* local diagnostic application to reset flags, timers, and variables 
as appropriate */
ENDIF 
CALL Invoke_Sw_Reset() /* causes a software reset to occur */ 
ENDIF 
ENDFUNCTION