Description
Refer to dtc p2195 (see page es-292).
Monitor description
The air-fuel ratio (a/f) sensor varies its output voltage in proportion to the air-fuel ratio. If the a/f sensor impedance (alternating current resistance) or output voltage deviates greatly from the standard range, the ecm determines that there is an open or short in the a/f sensor circuit.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Wiring diagram
Inspection procedure
Hint:
Hint:
Intelligent tester only: malfunctioning areas can be identified by performing the a/f control function provided in the active test. The a/f control function can help to determine whether the air-fuel ratio (a/f) sensor, heated oxygen (ho2) sensor and other potential trouble areas are malfunctioning.
The following instructions describe how to conduct the a/f control operation using the intelligent tester.
Hint:
Standard
Notice:
The a/f sensor has an output delay of a few seconds and the ho2 sensor has a maximum output delay of approximately 20 seconds.
Following the a/f control procedure enables technicians to check and graph the output voltages of both the a/f and ho2 sensors.
To display the graph, select the following menu items on the tester: diagnosis / enhanced obd ii / active test / a/f control / user data / afs b1 s1 and o2s b1 s2; then press the yes button and then the enter button followed by the f4 button.
Hint:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
Fog light switch
The fog lights secure excellent visibility in difficult driving
conditions,
such as in rain and fog.
(U.S.A.) Or (canada)
turns the fog lights off
Turns the fog lights on
Fog lights can be used when
The headlights are on in low beam. ...
Terminals of ecu
Check instrument panel junction block (main body ecu)
Disconnect the ib and ie junction block connectors.
Measure the voltage and resistance of the wire
harness side connectors.
Reconnect the ib and ie junction block connector.
Measure the voltage of the wire harness ...
Wireless remote control
The keys are equipped with the
following wireless remote control:
Vehicles without smart key
system
Locks all the doors
Sounds the alarm
Unlocks all the doors
Opens the side windows*
*: This setting must be customized
at your Toyota dealer.
Vehicles with smart key system
Locks all the do ...