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On-Board Monitor Test
This option allows you to view the results of On-Board Monitor tests. The tests are useful
after servicing or after erasing a vehicle’s control module memory.
Figure 4-9 Sample of on-board monitor screen
O2 Sensor Monitoring Test
The oxygen sensor monitor allows the PCM to verify that the O2 sensors are properly
calibrated and functioning without noticeable deterioration under normal engine
operating conditions.
Figure 4-10 Sample of O2 Sensor monitoring test screen
