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

5.2.8.1 Deactivation Verification of the Initially Active Diagnostic VN. 
Test Procedure: 
Perform a bus wake-up, which activates the initially active diagnostic VN and all other initially active Virtual 
Networks in the node. 
Wait for all initially active Virtual Networks to timeout (8 s + 1 s safety margin after the bus wake-up). Make 
sure that no subsequent bus wake-up occurs. 
Transmit 
a 
physically 
addressed 
ReadDataByIdentifier 
($1A) 
service 
with 
DataIdentifier 
$B0 
(diagnosticAddress) to the node using the node
’s physical request CAN Identifier and make sure that the node 
does not respond to this diagnostic request. 
Acceptance Criteria: 
The node shall not respond to the last transmitted ReadDataByIdentifier ($1A) service. This indicates that the 
node has deactivated the initially active diagnostic VN properly. 
5.2.8.2 Deactivation Verification of the Application Triggered Diagnostic VN. 
Test Procedure: 
a. Perform a bus wake-up, which activates the initially active diagnostic VN and all other initially active Virtual 
Networks in the node. 
b. Wait for a duration of 7 s (less than the VN timeout value) and transmit a physically addressed 
ReadDataByIdentifier ($1A) service with DataIdentifier $B0 (diagnosticAddress) to the node using the 
node
’s physical request CAN Identifier. Make sure that the node responds with the appropriate response 
message. This diagnostic request shall have caused the node to start the application triggered diagnostic 
VN and the node shall remain active for additional 8 s. 
c. Wait another duration of 7 s (less than the VN timeout value) and again transmit a physically addressed 
ReadDataByIdentifier ($1A) service with DataIdentifier $B0 (diagnosticAddress) to the node using the 
node
’s physical request CAN Identifier. Make sure that the node responds with the appropriate response 
message, which indicates that the node had activated the application triggered diagnostic VN with the 
previous diagnostic request. This second diagnostic request shall have caused the node to reset the 
application triggered diagnostic VN timer and the node shall remain active for additional 8 s. 
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