HOW TO READ O2S TEST RESULT USING hand-held TESTER

Connect the hand-held tester to the DLC3.

Fig 1: O2S TEST RESULT - Hand-Held Tester Display
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
On the tester screen, select the following menus: DIAGNOSIS / CARB OBDII / O2S TEST RESULT. A list of the O2S equipped on the vehicle will be displayed.

Fig 2: TEST DATA Screen - Hand-Held Tester Display
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Select the desired O2S and press ENTER. The following screen will appear.
Press HELP and * simultaneously. More information will appear.

Example:

The hand-held tester displays "17" as a value of the "TIME $81" (see the illustration on the left).
Find the Conversion Factor value of "TIME $81" in the O2S TEST RESULT chart below. 0.3906 is specified for $81 in this chart.
Multiply "17" in step (1) by 0.3906 (Conversion Factor) in the step (2).
17 x 0.3906 = 6.6%
If the answer is within the standard value, the "TIME $81" can be confirmed to be normal.

O2S TEST RESULT Chart

O2S TEST RESULT CHART

TEST ID	Description of TEST DATA	Conversion Factor	Unit	Standard Value
$81	Percentage of monitoring time when the HO2S voltage is less than 0.05V	Multiply 0.3906	%	Within 60%