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Additional Tests
SYSTEM CHECKS MENU
67
OBD Monitor Check - Retrieves and displays test results for
emission-related powertrain components and systems that are not
continuously monitored.
EVAP Check - Performs a leak test for the vehicle's EVAP system.
1. While linked to the vehicle, press M.
The Main Menu displays.
2. Select System Checks, then press
ENTER
.
The System Checks menu displays.
If System Checks is not
shown on the Main Menu, the
System Check functions are
not available for your vehicle.
O2 Sensor Check
OBD2 regulations require that applicable vehicles monitor and test operation
of the oxygen (O2) sensors to identify problems that can affect fuel
efficiency and vehicle emissions. These tests are performed automatically
when engine operating conditions are within predefined limits. Results of
these tests are stored in the on-board computer's memory.
The O2 Sensor Check function lets you retrieve and view O2 sensor
monitor test results for the most recently completed tests from your
vehicle's on-board computer.
The scan tool does not perform O2 sensor tests, but retrieves
results from the most recently performed O2 sensor tests from
the on-board computer's memory. You may retrieve O2 sensor
test results for only one test of one sensor at any given time.
1. From the System Checks menu, select O2 Sensor Check, then
press ENTER
.
2. A "One moment please..." message displays, followed by the select
sensor screen.
If O2 sensor check data is not
presently stored in the vehicle’s
computer, an advisory message
displays. Press M to return to the
Main Menu.
If O2 sensor checks are not
supported by the vehicle under
test, an advisory message displays. Press M to return to the
Main Menu.
3. Select the O2 sensor for which you wish to view test results, then
press ENTER
to display the test results.
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