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Physical Layer test
. Represents the logical information from the data link layer as electrical signals on the transmission lines
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  - Signal Voltage Level
  - Recessive/Dominant Input Threshold
  - Bit Rise/Fall time
  - Signal Characteristics
  - Bit Timing
  - Internal Resistance of CAN_H & CAN_L
  - Min/Max Supply Voltage Level
  - Engine Start Voltage Curve
  - Test Immunity to Ground/Battery Voltage
  - Loss of Ground/Power Supply
  - Bus Short to Ground/Battery Voltage
 
Data Link Layer
. Processes messages from the interaction layer and puts them into data frames and vice versa
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  - CAN Protocol Conformance
  - CAN Parameter
  - Data Frame/Extended Format Frame
  - Bus Load (Max. Load, Burst, Peak Load)
  - Receive Capability
 
Interaction Layer
. Maps signals to messages and handles transmission and reception of messages
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  - Transmission(Cyclic, On Event)
  - Repetition
  - Delay Time
  - Timeout Detection
 
Network Management
. Controls the network resource and handles network errors
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  - Transition Network Status
  - Network Request
  - Transmission of NM/Application Message
  - Startup Behavior
 
Network Management
. Handles the segmentation of messages into several CAN frames
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  - Specification of the algorithm
  - Addressing format
  - Duplex mode
  - Flow control restrictions and timing parameters
 
Diagnostics
. - Diagnostic Trouble Codes