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 208 of 336 
IF (Level_81_Active = YES) THEN 
msg_sent 

NO 
FOR (n 

DTC_Index TO (total_num_local_dtcs - 1) BY 1)
IF (($DTC_Info[n].DTCSB & $Request_Status_Mask) != $00) THEN 
/* send $81 UUDT response message containing DTC information */ 
send ($81 $DTC_Info[n].DTCH $DTC_Info[n].DTCL $DTC_Info[n].DTCFT
$DTC_Info[n].DTCSB) 
msg_sent 

YES
DTC_Index 

n + 1 /* save starting point for next time through FOR loop */ 
n 

total_num_local_dtcs /* exit FOR loop */ 
ENDIF 
ENDFOR 
IF (n 

(total_num_local_dtcs - 1) AND (msg_sent = NO)) THEN 
Level_81_Active 

NO 
/* send $81 UUDT endOfDTCReport response message */ 
send ($81 $00 $00 $00 $DTCSAM) 
ENDIF 
ENDIF 
ENDFUNCTION 
This function handles the sending of UUDT response messages for service $A9 requests with the 
sub-parameter set to $82. The function shall be executed in a background loop at a rate which satisfies the 
UUDT timing requirements specified in the Service Description section of this diagnostic service 
BEGINFUNCTION Send_On_Change_DTC_Count( ) 
/************************************************************************************ 
* Handle Message $82 Steady State “sendOnChangeDTCCount” 
* This background algorithm is halted when any of the following conditions occur: 
* 1. Tester transmits service $20 request to return to normal mode 
* 2. The node is powered down 
* 3. Tester stops sending service $3E tester present requests 
* NOTE: this algorithm is intended to be run in parallel to internal node-resident
* diagnostic trouble code testing. 
*************************************************************************************/ 
IF (DTC_send_on_change_flag = 1) THEN 
temp_count 

0 
FOR (m 

0 TO (total_num_local_dtcs -1) BY 1) 
IF (($DTC_Info[m].DTCSB & stored_status_mask) != $00) THEN 
temp_count 

temp_count + 1 
ENDIF 
ENDFOR 
IF (temp_count != send_on_change_count) THEN 
send_on_change_count 

temp_count 
temp_count_hi 

((send_on_change_count & $FF00) >> 8) 
temp_count_lo 

(send_on_change_count & $00FF) 
/* send UUDT response with updated count information */ 
send ($82 $temp_count_hi $temp_count_lo) 
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
CameraLoops.com

---