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Toyota Sequoia (2005). Manual - part 704
D13872
Hand–Held Tester
DLC3
CAN VIM
Rich
Lean
Time
14.6
3.3
Keep Engine Speed
(V)
B17513
Air–fuel
Ratio
–
SFI
AIR–FUEL RATIO (A/F) SENSOR
SF–71
2805
(b)
Connect a hand–held tester to the Controller Area Net-
work Vehicle Interface Module (CAN VIM). Then connect
the CAN VIM to the Date Link Connector 3 (DLC3).
(c)
Turn the ignition switch ON.
(d)
Select the following menu items : Data List / A/FS B1 S1
and O2S B1 S2.
(e)
Warm up the A/F sensor by running the engine at 2,500
rpm for approximately 2 minutes.
(f)
Keep the engine speed at 2,500 rpm and confirm that the
display of the ”A/FS B1 S1” is as shown in the illustration.
HINT:
The illustration may slightly differ from the display on the
hand–held tester.
The waveform of the A/F sensor is displayed only on the
hannd–heldtester.
(g)
Confirm that the display of the ”O2S B1 S2” changes be-
tween 0 and 1 V with the engine speed at 2,500 rpm.
OK:
The voltage output oscillates more than 8 times in 10
seconds.
CAUTION:
Perform the check immediately after warming up the
engine.
If the voltage variation could not be verified, warm up
the heated oxygen sensor again. If it could not be veri-
fied even after warming up the sensor again, check
the DTC No. (See page