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Diagnostic Monitors Drive Cycles



OBD DIAGNOSTIC MONITORS

During vehicle operation, the on-board diagnostic (OBD) facilities of the Engine Control Module (ECM) and Transmission Control Module (TCM), continuously check the Engine Management and Transmission Control systems. The Powertrain OBD incorporates several diagnostic monitors; each monitor has an associated group of DTCs. The diagnostic monitors will complete the diagnostic test(s) if a specified service drive cycle is carried out.

The diagnostic monitors are:
- Heated Oxygen Sensors Monitor
- Adaptive Fuel Monitor
- Misfire Monitor
- Catalyst Efficiency Monitor
- Evaporative System Monitor
- Exhaust Gas Recirculation Monitor (not applicable for X400)
- Comprehensive Component Monitor (Engine Management / Transmission)

DIAGNOSTIC MONITORS DRIVE CYCLES
Technicians can ensure that an OBD Monitor drive cycle is completed and that all or specific components have been checked by completing a specified drive cycle. Use the following service drive cycles to confirm that the components and subsystems covered by the Diagnostic Monitors are operating correctly.
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