Full Product Manual

46
O2 Monitor Test
OBD II regulations set by the (Society of Automotive Engineers) SAE
require vehicles monitors and tests on the oxygen (O2) sensors to identify
problems related to fuel efficiency and vehicle emissions. These tests are
done automatically when engine operating conditions are within specified
limits. These test results are saved in the vehicle’s on-board computer's
memory.
The O2 Monitor Test function allows retrieval and viewing of O2 sensor
monitor test results for the most recently performed tests from the vehicle's
on-board computer.
The O2 Monitor Test function is not supported by vehicles that
communicate using a controller area network (CAN). For O2 Monitor Test
results of CAN-equipped vehicles, see On-Board Monitor Test on page 47.
1) Use the UP/DOWN scroll button to select O2 Monitor Test from
Diagnostic Menu and press OK button.
2) Wait while the scan tool validates the PID MAP.
3) Use the UP/DOWN scroll button to select O2 sensor from O2 Monitor
Test menu and press OK button.
Figure 4-30
 If the vehicle does not support the mode, a message displays on
the screen.
4) View test results of selected O2 sensor.