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

Table 108: Node Interface Data Dictionary of SecurityAccess Service Pseudo Code 
Variable/Meaning 
Values 
message_data_length 
Security_Access_Unlocked 
TesterPresent_Timer_State 
vulnerability_flag 
manufacturers_enable_counter 
Dev_Cntrl_Active 
DeviceContol_Security_Level
Reference 
Common/Global 
Pseudo Code Data Dictionary 
For 
Definition 
Of 
These 
Flags/Variables 
SPS_Bad_Key_Counter 
Counter of invalid Mode $27 requests. Following two invalid requests, the 
device will reject any further Mode $27 requests for the next 10 s.
 
Range: 0 to 2 counts 
Resolution: 1 count 
DevCtrl_Bad_Key_Counter 
Counter of invalid Mode $27 requests. Following 2 invalid requests, the 
device will reject any further Mode $27 requests for the next 10 s.
 
Range: 0 to 2 counts 
Resolution: 1 count 
Security_Delay_Timer 
Count down timer used to reject Mode $27 requests for 10 s following two 
level $02 requests with an incorrect key.
 
Range: 0 to 10 s 
Resolution: 0.1 s 
SPS_Security_Key_Allowed 
Indication that a level $01 security request for the seed has been received by 
the device and a level $02 security key request is allowed.
 
TRUE/FALSE 
DevCtrl_Security_Key_Allowed 
Indication that a level $03 security request for the seed has been received by 
the device and a level $04 security key request is allowed.
 
TRUE/FALSE 
Security_Access_Allowed 
Indication that a valid security code (as defined in the Vehicle Theft Deterrent 
SSTS) has been received.
 
TRUE/FALSE 
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