Comprehensive Component Monitoring OBD II Siemens VDO function definition: Strategy: Notes

Principle:

• Sensors  that can affect emissions or are used to monitor other component / system are monitored for circuit continuity and short to battery voltage and / or to ground using high and low voltage signal limit.
• Actuators  that can affect emissions or are used to monitor other component / system are monitored by power stage voltage check for valid signals.
• For some of sensors or actuators, plausibility checks are included to ensure proper operation of the components.