Diagnostics And Services: General
The control module's diagnostics can perform and present the following using a connected diagnostics tool:
- Store malfunction indicator (diagnostic trouble codes) and in certain cases activate warning light or show text message.
- Store information about the nature of the malfunction:
- Counter that indicates how frequent the malfunction is
- Status indicators for the diagnostic trouble code test.
- Frozen values that were generated when malfunction was detected for the first time.
- Erase information about malfunction and its information.
- Present values (parameters) for different connected input signals and output signals from, e.g., components as well as other calculated values.
- Present part number, version number, component number, etc. for both software and hardware.
- Present and change certain special customer settings and configurations.
- Trigger/control (activate) the connected output signals.
- Start special built-in check programs/tester such as, e.g., calibrations of gear position sensor, quick-test of tank system.
- Access check to limit access to certain parameters and functions. Accessible first after unlocking with, e.g., PIN-code.
Exactly what each control module's diagnostics can perform depends both on model year and system.