Diagnostic Trouble Codes/DTC Check / Clear.
(e) Allow the vehicle to drive in accordance with the driving pattern described in the Confirmation Driving Pattern.
(f) Enter the following menus: Powertrain / Engine / Monitor / O2 Sensor.
(g) Check that the status of O2 Sensor is Complete. If the status is still Incomplete, drive the vehicle according to the driving pattern again.
(h) Enter the following menus: Powertrain / Engine / Monitor / O2 Sensor / Details / RANGE B1S1 or RANG B2S1 / Details.
(i) Check the test value of the air fuel ratio sensor output current during fuel cut.
Result:
B -- REPLACE AIR FUEL RATIO SENSOR
A -- Continue to next step.
5. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF AIR FUEL RATIO SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Warm up the air fuel ratio sensor at an engine speed of 2500 rpm for 90 seconds.
(e) Enter the following menus: Powertrain / Engine / Data List / A/F Control System / AFS Voltage B1S1 or AFS Voltage B2S1 and
Engine Speed.
(f) Check the air fuel ratio sensor voltage 3 times, when the engine is in each of the following conditions:
(1) While idling (check for at least 30 seconds) (Step "A")
(2) At an engine speed of approximately 2500 rpm (without any sudden changes in engine speed) (Step "B")
(3) The engine speed is raised to 4000 rpm and then the accelerator pedal is quickly released so that the throttle valve is fully closed
(Step "C").
Standard:
HINT
- For more information, see the diagrams below.
- If the output voltage of the air fuel ratio sensor remains at approximately 3.3 V (see Malfunction Condition diagram) under
any conditions, including those above, the air fuel ratio sensor may have an open circuit. (This will also happen if the air fuel
ratio sensor heater has an open circuit.)
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