(b) Turn the ignition switch to the ON position and turn the tester on.
(c) Start the engine.
(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / O2S B1 S2.
(e) After warming up the engine, run the engine at an engine speed of 2,500 rpm for 3 minutes.
(f) Read the output voltage of the HO2 sensor when the engine rpm is suddenly increased.
Quickly accelerate the engine to 4,000 rpm 3 times using the accelerator pedal. Standard voltage: Fluctuates between 0.4 V or less and 0.5 V or more.
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