Equus 3130 - Scan Tool – OBD2 - Manual (Page 47)

Additional Tests
O2 SENSOR TEST
OBD2 45
E
■ X or XX - These characters identify the location of the O2 sensor in
relation to a cylinder bank. An O2 sensor for cylinder bank 1 is iden-
tified by the designation “1” or "B1"; a sensor for cylinder bank 2 is
identified as “2” or "B2."
”Bank One” indicates the side of the engine where cylinder
number one is located (V-type engines). Bank Two is oppo-
site of Bank One.
■ Y orYY - These characters identity the location of the O2 sensor in rela-
tion to the exhaust system catalyst. An O2 sensor located upstream of
the catalyst is identified by the designation”1” or "S1", a sensor located
downstream of the Catalytic Converter is identified as “2” or "S2."
For example, O2S12 or O2SB1S2 is the designation for the down-
stream O2 sensor for cylinder bank 1.
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 "Mode Selection Menu", use
the UP and DOWN buttons, as
necessary, to highlight O2 Sensor Test,
then press the ENTER/LD button.
■ The "Select Sensor" screen displays.
The screen shows all O2 sensors
applicable to the vehicle under test.
If O2 sensor tests are not sup-
ported by the vehicle under test,
an advisory message shows on
the Scan Tool's display. Press the
ENTER/LD
button to return
to "Live Data" mode.
2. Use the UP and DOWN but-
tons, as necessary, to highlight the O2
sensor for which you wish to view test
results, then press the ENTER/LD
button.
3. A "One moment please..." message displays while the request is
sent to the vehicle's on-board computer.
4. When test results have been retrieved, data for the selected sensor
test will show on the Scan Tool's display.
5. When you have finished viewing the retrieved test data, scroll to the
end of the display to select Exit, then press the ENTER/LD
button to return to the "Select Test" screen.