The read diagnostic information service is used to read the set DTCs in one or multiple servers/ ECU’s memory The service ID for clear Diagnostic information is 0x19 By default, the server returns both emission-related and non-emission related DTCs The clients can perform the below functionalities Read number of DTCs …

The following services are categorized under the Data Transmission functional unit READ DATA BY IDENTIFIER The client will be able to read stored values in the server linked to some of the identifiers in the server. …

This service is used to control the communication between the client/tester and server/ECU. This is generally done to gain bandwidth for any diagnostic communication. There can be an option to change the CAN data link layer parameters during a non-default session The client verified if the ECU supports a particular…

This service is used if the client would want to stop or start transmission when an event occurs. There can be a scenario that the client also requests the server to execute a service when an event occurs Important points about Response On Event service If any of the data…

The control DTC Setting service is used when the client/Tester needs to stop or resume the server/ECU updating the DTC when a fault occurs. This would be very helpful when the client knows the issue in the vehicle but is trying to root cause by doing some additional experiments. Important…

This service is used when there has to be any secured data communication between the server/ECU and the client/Tester. The purpose is to protect any confidential data against attacks from threats/ vulnerabilities Important points about Secure data Transmission Only confirmed services can use this service. …

Use this advanced service if you want to change any communication parameters. Generally, this is optionally implemented in the server/ECU because the timing parameters would not be exposed to the outside world. Implementation of the service depends on the designer to change any communication parameters or configuration. To use the…