Hint:
Sensor 1 refers to the sensor mounted in front of the three-way catalytic converter (twc) and located near the engine assembly.
Description
Refer to dtc p2195 (see page es-292).
Monitor description
After the engine is warmed up, the ecm performs air-fuel ratio feedback control to maintain the air-fuel ratio at the stoichiometric level. In addition, active a/f control is performed for approximately 10 seconds after the preconditions are met in order to measure the a/f sensor response rate. During active a/f control, the ecm forcibly increases and decreases the injection volume a certain amount, based on the stoichiometric air-fuel ratio learned during normal air-fuel ratio control, and measures the a/f sensor response rate. The ecm receives a signal from the a/f sensor while performing active a/f control and uses it to calculate the a/f sensor response rate deterioration level.
If the a/f sensor response rate deterioration level is less than the threshold, the ecm interprets this as a malfunction and sets the dtc.
Confirmation driving pattern
Hint:
Performing this confirmation pattern will activate the a/f sensor response monitor.
Hint:
Completion of all a/f sensor monitors is required to change the value in test result.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Monitor result
Refer to checking monitor status (see page es-17).
Wiring diagram
Inspection procedure
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 voltage outputs 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; and press the yes button and then the enter button followed by the f4 button.
Hint:
If any dtcs relating to the a/f sensor (dtcs for the a/f sensor heater or a/f sensor admittance) are output, troubleshoot those dtcs first.
Engine (ignition) switch
(vehicles with smart key
system)
Performing the following
operations when carrying
the electronic key on your
person starts the engine or
changes engine switch
modes.
Starting the engine
1. Pull the parking brake switch
to check that the parking
brake is set.
The parking brake indicator will
come on.
2. Check that the shift lever i ...
Speaking on the phone
The following screen is displayed when speaking on the phone.
To adjust the call volume
Select “-” or “+”. You can also adjust the volume using the steering
switches or the volume knob.
To prevent the other party from hearing your voice
Select “mute”.
Inputting tones
When usin ...
How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the lighting system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
Refer to pr ...