OBD II Monitoring Conditions

When testing for DTC reoccurrence, it can be determined if the Service Drive Cycle was of sufficient length by performing a PDU "Systems Readiness Test".

The Systems Readiness Test occurs automatically when DTC retrieval is initiated.

If DTC P1000 is stored in memory, the on-board diagnostic tests have not  been completed. If DTC P1111 is stored in memory, all on-board diagnostic tests have been completed.

To identify which portions of the Systems Readiness Test have not  been completed, access OBD Logger from PDU Toolbox. PDU will report in the following manner:

• Module ECM:

The following tests have been identified as incomplete:

Catalyst

Evaporative purge system

O2 Sensor

EGR system

Refer to the following for important information regarding the use of this Summary.