2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P013611,P013613,P013614,P013615,P013617,P013623,P013A00; O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground; 2020 MY Corolla Corolla HV [01/2019

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001GJ5W
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 04/2020]
Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P013611,P013613,P013614,P013615,P013617,P013623,P013A00; O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground; 2020 MY Corolla Corolla HV [01/2019 - 04/2020]

DTC

P013611

O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground

DTC

P013613

O2 Sensor Circuit Bank 1 Sensor 2 Circuit Open

DTC

P013614

O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground or Open

DTC

P013615

O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Battery or Open

DTC

P013617

O2 Sensor Circuit Bank 1 Sensor 2 Circuit Voltage Above Threshold

DTC

P013623

O2 Sensor Circuit Bank 1 Sensor 2 Signal Stuck Low

DTC

P013A00

O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2

DESCRIPTION

In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) components in the exhaust gas, a TWC (Three-Way Catalytic Converter) is used. For the most efficient use of the TWC, the air fuel ratio must be precisely controlled so that it is always close to the stoichiometric air fuel ratio. For the purpose of helping the ECM to deliver accurate air fuel ratio control, a heated oxygen sensor is used.

The heated oxygen sensor is located behind the TWC, and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low).

When the air fuel ratio becomes lean, the oxygen concentration in the exhaust gas is high. The heated oxygen sensor informs the ECM that the post-TWC air fuel ratio is lean (low voltage, i.e. less than 0.45 V).

Conversely, when the air fuel ratio is richer than the stoichiometric air fuel ratio, the oxygen concentration in the exhaust gas is low. The heated oxygen sensor informs the ECM that the post-TWC air fuel ratio is rich (high voltage, i.e. higher than 0.45 V). The heated oxygen sensor has the property of changing its output voltage drastically when the air fuel ratio is close to the stoichiometric air fuel ratio.

The ECM uses the supplementary information from the heated oxygen sensor to determine whether the air fuel ratio after the TWC is rich or lean, and adjusts the fuel injection duration accordingly. Thus, if the heated oxygen sensor is working improperly due to an internal malfunction, the ECM is unable to compensate for deviations in the primary air fuel ratio control.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P013611	O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground	Low impedance: Heated oxygen sensor impedance is less than 5 Ω for 30 seconds or more when ECM presumes sensor is warmed up and operating normally (2 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Air fuel ratio sensor (sensor 1) Gas leak from exhaust system EGR valve assembly Fuel pressure Fuel system PCV valve and hose Intake system	Comes on	DTC stored	SAE Code: P0136 DTC for Mexico Models: Does not apply
P013613	O2 Sensor Circuit Bank 1 Sensor 2 Circuit Open	Abnormal output voltage: During active air fuel ratio control, heated oxygen sensor voltage does not increase to 0.71 V or higher for certain amount of time (2 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Air fuel ratio sensor (sensor 1) Gas leak from exhaust system EGR valve assembly Fuel pressure Fuel system PCV valve and hose Intake system	Comes on	DTC stored	SAE Code: P0136 DTC for Mexico Models: Does not apply
P013614	O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Ground or Open	High impedance: Heated oxygen sensor impedance is 15 kΩ or higher for 90 seconds or more when ECM presumes sensor to be warmed up and operating normally (2 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Air fuel ratio sensor (sensor 1) Gas leak from exhaust system EGR valve assembly	Comes on	DTC stored	SAE Code: P0137 DTC for Mexico Models: Does not apply
P013615	O2 Sensor Circuit Bank 1 Sensor 2 Circuit Short to Battery or Open	Extremely high voltage (short): Heated oxygen sensor output voltage exceeds 1.2 V for 10 seconds or more (2 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) ECM	Comes on	DTC stored	SAE Code: P0138 DTC for Mexico Models: Does not apply
P013617	O2 Sensor Circuit Bank 1 Sensor 2 Circuit Voltage Above Threshold	Low voltage (open): During active air fuel ratio control, following conditions (a) and (b) met for certain amount of time (2 trip detection logic) (a) Heated oxygen sensor output voltage less than 0.21 V (b) Target air fuel ratio rich	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Air fuel ratio sensor (sensor 1) Gas leak from exhaust system EGR valve assembly	Comes on	DTC stored	SAE Code: P0137 DTC for Mexico Models: Applies
P013623	O2 Sensor Circuit Bank 1 Sensor 2 Signal Stuck Low	Heated oxygen sensor (sensor 2) voltage does not drop to less than 0.2 V immediately after fuel cut starts (2 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Gas leak from exhaust system	Comes on	DTC stored	SAE Code: P0139 DTC for Mexico Models: Does not apply
P013A00	O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2	Heated oxygen sensor (sensor 2) voltage does not drop from 0.35 V to 0.2 V immediately after fuel cut starts (1 trip detection logic)	Heated oxygen sensor (sensor 2) circuit Heated oxygen sensor (sensor 2) Gas leak from exhaust system	Comes on	DTC stored	SAE Code: P013A DTC for Mexico Models: Does not apply

MONITOR DESCRIPTION

Active Air fuel Ratio Control

The ECM usually performs air fuel ratio feedback control so that the air fuel ratio sensor output indicates a near stoichiometric air fuel ratio. This vehicle includes active air fuel ratio control in addition to regular air fuel ratio control. The ECM performs active air fuel ratio control to detect any deterioration in the Three-Way Catalytic Converter (TWC) and any malfunctions of the heated oxygen sensor (refer to the diagram below).

Active air fuel ratio control is performed for approximately 30 seconds while driving with a warm engine. During active air fuel ratio control, the air fuel ratio is forcibly regulated to become lean or rich by the ECM. If the ECM detects a malfunction, a DTC is stored.

Abnormal Heated Oxygen Sensor Output Voltage (DTC P013613)

While the ECM is performing active air fuel ratio control, the air fuel ratio is forcibly regulated to become rich or lean. If the sensor is not functioning properly, the variation in output voltage is small. For example, when the heated oxygen sensor voltage does not increase to 0.71 V or higher during active air fuel ratio control, the ECM determines that the sensor output voltage is abnormal and stores DTC P013613.

Open in Heated Oxygen Sensor Circuit (DTC P013617)

During active air fuel ratio control, the ECM calculates the Oxygen Storage Capacity (OSC)* of the Three-Way Catalytic Converter (TWC) by forcibly regulating the air fuel ratio to become rich or lean.

If the heated oxygen sensor has an open circuit, or the output voltage of the sensor noticeably decreases, the OSC indicates an extraordinarily high value. Even if the ECM attempts to continue regulating the air fuel ratio to become rich or lean, the heated oxygen sensor output will not change.

While performing active air fuel ratio control, when the target air fuel ratio is rich and the heated oxygen sensor output voltage is less than 0.21 V (lean), the ECM interprets this as an abnormally low sensor output voltage and stores DTC P013617.

HINT:

*: The TWC has the capability to store oxygen. The OSC and the emission purification capacity of the TWC are mutually related. The ECM determines whether the catalyst has deteriorated based on the calculated OSC value.

Click here

High or Low Impedance of Heated Oxygen Sensor (DTCs P013611 or P013614)

During normal air fuel ratio feedback control, there are small variations in the exhaust gas oxygen concentration. In order to continuously monitor the slight variation of the heated oxygen sensor signal while the engine is running, the impedance* of the sensor is measured by the ECM. The ECM determines that there is a malfunction in the sensor when the measured impedance deviates from the standard range.

*: The effective resistance in an alternating current electrical circuit.

HINT:

The impedance cannot be measured using an ohmmeter.
DTC P013611 indicates the deterioration of the heated oxygen sensor. The ECM stores the DTC by calculating the impedance of the sensor when the typical enabling conditions are satisfied (2 driving cycles).
DTC P013614 indicates an open or short circuit in the heated oxygen sensor (2 driving cycles). The ECM stores the DTC when the impedance of the sensor exceeds the threshold 15 kΩ.

Extremely High Heated Oxygen Sensor Output Voltage (DTC P013615)

The ECM continuously monitors the heated oxygen sensor output voltage while the engine is running.

DTC P013615 is stored if the heated oxygen sensor voltage output is 1.2 V or higher for 10 seconds or more.

Abnormal Heated Oxygen Sensor Output Voltage During Fuel-cut (DTC P013623)

The sensor output voltage drops to less than 0.2 V (extremely lean status) immediately when the vehicle decelerates and fuel cut is operating. If the voltage does not drop to less than 0.2 V for 6 seconds or more, the ECM determines that the sensor response has deteriorated, illuminates the MIL and stores a DTC.

Abnormal Heated Oxygen Sensor Output Voltage During Fuel-cut from Rich Condition (DTC P013A00)

If the sensor output voltage does not drop from 0.35 to 0.2 V immediately when the vehicle decelerates and fuel cut is operating, the ECM illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0136: Heated oxygen sensor voltage check (voltage malfunction) P0136: Heated oxygen sensor circuit continuity check (circuit short) P0137: Heated oxygen sensor voltage check (low voltage) P0137: Heated oxygen sensor circuit continuity check (circuit open) P0138: Heated oxygen sensor circuit continuity check (out of range) P0139: Heated oxygen sensor response rate during fuel cut P013A: Heated oxygen sensor response rate during fuel cut from rich condition
Required Sensors/Components (Main)	Heated oxygen sensor (sensor 2)
Required Sensors/Components (Related)	Crankshaft position sensor Engine coolant temperature sensor Mass air flow meter sub-assembly Throttle position sensor Air fuel ratio sensor
Frequency of Operation	Once per driving cycle: Active air fuel ratio control detection, heated oxygen sensor abnormal voltage during fuel cut Continuous: Other
Duration	20 seconds: Heated oxygen sensor voltage check 30 seconds: Heated oxygen sensor circuit continuity check (circuit short) 90 seconds: Heated oxygen sensor circuit continuity check (circuit open) 10 seconds: Heated oxygen sensor circuit continuity check (out of range) 6 seconds: Heated oxygen sensor response rate during fuel cut 7 seconds: Heated oxygen sensor response rate during fuel cut from rich condition
MIL Operation	2 driving cycles: P0136, P0137, P0138 and P0139 Immediate: P013A
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

All

Monitor runs whenever the following DTCs are not stored

P0010 (Camshaft timing oil control valve)

P0011 (VVT system - advance)

P0012 (VVT system - retard)

P0016 (VVT system - misalignment)

P0031, P0032, P101D (Air fuel ratio sensor heater)

P0037, P0038, P0141, P102D (Heated oxygen sensor heater)

P0101, P0102, P0103 (Mass air flow meter)

P0106, P0107, P0108 (Manifold absolute pressure)

P0111, P0112, P0113 (Intake air temperature sensor)

P0116, P0117, P0118 (Engine coolant temperature sensor)

P011B (Engine coolant temperature/intake air temperature sensor correlation)

P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)

P0125 (Insufficient coolant temperature for closed loop fuel control)

P0128 (Thermostat)

P014C, P014D, P015A, P015B, P2195, P2196, P2237, P2238, P2239, P2252, P2253 (Air fuel ratio sensor)

P0171, P0172 (Fuel system)

P0300 - P0304 (Misfire)

P0327, P0328 (Knock control sensor)

P0335 (Crankshaft position sensor)

P0340, P0342, P0343 (Camshaft position sensor)

P0351 - P0354 (Igniter)

P0400 (EGR system)

P0401 (EGR system (closed))

P0403 (EGR control circuit)

P0657, P0658, P2102, P2103, P2111, P2112, P2119 (Throttle actuator)

P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance)

P2228, P2229 (Atmospheric pressure sensor)

P0136 and P0137: Heated Oxygen Sensor Voltage Check (Voltage Malfunction and Low Voltage)

Auxiliary battery voltage	11 V or higher
Intake air temperature	-10°C (14°F) or higher
Engine coolant temperature	75°C (167°F) or higher
Atmospheric pressure	76 kPa(abs) [11 psi(abs)] or higher
Idling	Off
Engine speed	Less than 4500 rpm
Air fuel ratio sensor status	Activated
Fuel system status	Closed loop
Engine load	10% or higher, and less than 80%

P0136: Heated Oxygen Sensor Circuit Continuity Check (Circuit Short)

Auxiliary battery voltage	11 V or higher
Estimated heated oxygen sensor temperature	Less than 700°C (1292°F)
ECM monitor	Completed
DTC P0607	Not set
Air fuel ratio imbalance of clogged EGR runner fail (P10AA)	Not set

P0137: Heated Oxygen Sensor Circuit Continuity Check (Circuit Open)

Auxiliary battery voltage	11 V or higher
Estimated heated oxygen sensor temperature	450°C (842°F) or higher, and less than 750°C (1382°F)
DTC P0607	Not set
Air fuel ratio imbalance of clogged EGR runner fail (P10AA)	Not set

P0138: Heated Oxygen Sensor Circuit Continuity Check (Out of Range)

Auxiliary battery voltage	11 V or higher
Time after engine start	2 seconds or more
Air fuel ratio imbalance of clogged EGR runner fail (P10AA)	Not set

P0139: Heated Oxygen Sensor Response Rate During Fuel Cut

Engine coolant temperature	75°C (167°F) or higher
Estimate catalyst temperature	450°C (842°F) or higher
Fuel cut	On
Air fuel ratio imbalance of clogged EGR runner fail (P10AA)	Not set

P013A: Heated Oxygen Sensor Response Rate during Fuel Cut from Rich Condition

Auxiliary battery voltage	11 V or higher
Engine coolant temperature	75°C (167°F) or higher
Estimate catalyst temperature	450°C (842°F) or higher
Fuel cut	On
Air fuel ratio imbalance of clogged EGR runner fail (P10AA)	Not set

TYPICAL MALFUNCTION THRESHOLDS

P0136: Heated Oxygen Sensor Voltage Check (Voltage Malfunction)

All of the following conditions (a), (b) and (c) met	-
(a) OSC (Oxygen Storage Capacity) of catalyst	1.9 g or more
(b) Commanded air fuel ratio	14.4 or less
(c) Heated oxygen sensor voltage	0.21 V or higher, and less than 0.71 V

P0137: Heated Oxygen Sensor Voltage Check (Low Voltage)

All of the following conditions (a), (b) and (c) met	-
(a) OSC (Oxygen Storage Capacity) of catalyst	1.9 g or more
(b) Commanded air fuel ratio	14.4 or less
(c) Heated oxygen sensor voltage	Less than 0.21 V

P0136: Heated Oxygen Sensor Circuit Continuity Check (Circuit Short)

Duration of following condition	30 seconds or more
Heated oxygen sensor impedance	Less than 5 Ω

P0137: Heated Oxygen Sensor Circuit Continuity Check (Circuit Open)

Duration of following condition	90 seconds or more
Heated oxygen sensor impedance	15 kΩ or higher

P0138: Heated Oxygen Sensor Circuit Continuity Check (Out of Range)

Duration of following condition	10 seconds or more
Heated oxygen sensor voltage	1.2 V or higher

P0139: Heated Oxygen Sensor Response Rate During Fuel Cut

Duration until heated oxygen sensor voltage drops to 0.2 V during fuel cut

6 seconds or more

P013A: Heated Oxygen Sensor Response Rate during Fuel Cut from Rich Condition

Duration that heated oxygen sensor voltage drops from 0.35 to 0.2 V during fuel cut (Normalized)

1 or more

MONITOR RESULT

Refer to detailed information in Checking Monitor Status.

Click here

P0137: O2 Sensor / MAX VOL B1S2

Monitor ID	Test ID	Scaling	Unit	Description
$02	$08	Multiply by 0.001	V	Maximum sensor voltage

P0139: O2 Sensor / F/C TIME B1S2

Monitor ID	Test ID	Scaling	Unit	Description
$02	$8D	Multiply by 0.001	Seconds	Duration that sensor voltage drops to 0.2 V during fuel-cut

P0136: O2 Sensor / MAX OSC B1S2

Monitor ID	Test ID	Scaling	Unit	Description
$02	$8F	Multiply by 0.0003	No dimension	Maximum oxygen storage capacity

P013A: O2 Sensor / RL F/C B1S2

Monitor ID	Test ID	Scaling	Unit	Description
$02	$90	Multiply by 0.001	No dimension	Response rate during fuel cut from rich condition (Normalization)

CONFIRMATION DRIVING PATTERN

HINT:

This confirmation driving pattern is used for the "Perform Confirmation Driving Pattern" procedure of the following diagnostic troubleshooting procedure.
Performing this confirmation driving pattern will activate the heated oxygen sensor monitor (the catalyst monitor is performed simultaneously). This is very useful for verifying the completion of a repair.
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

P013611, P013613, P013614, P013615 and P013617

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) [A].
Turn the Techstream on.
Put the engine in Inspection Mode (Maintenance Mode).
Click here
Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher [B].
With the engine running, drive the vehicle at 75 to 120 km/h (46 to 75 mph) for 10 minutes or more [C].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

If the engine stops, further depress the accelerator pedal to restart the engine.
Enter the following menus: Powertrain / Engine / Trouble Codes [D].
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P013611, P013613, P013614, P013615 or P013617.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE, perform steps [C] through [D] again.
[B] to [D]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

P013623 and P013A00

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Monitor / Current Monitor.
Check that Catalyst Efficiency / Current is Incomplete.
Put the engine in Inspection Mode (Maintenance Mode).
Click here
Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with park (P) selected [A].
HINT:

In order to keep the idle stable, turn off the A/C and all other electric loads and do not perform any shift operations.
With the engine running, drive the vehicle at approximately 75 km/h (46 mph) for 10 minutes or more [B].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
- Drive the vehicle while keeping the engine load as constant as possible.
- If the engine stops, further depress the accelerator pedal to restart the engine.
With brake (B) selected and the engine running, drive the vehicle at 75 km/h (46 mph), and then decelerate the vehicle by releasing the accelerator pedal for 5 seconds or more to perform the fuel-cut [C].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

If the engine stops, further depress the accelerator pedal to restart the engine.
Enter the following menus: Powertrain / Engine / Monitor / Current Monitor / O2 Sensor / RL F/C B1S2 [D].
Check the Test Value for RL F/C B1S2.
HINT:

If Test Value displays 0, perform step [C] until it displays a value larger than 0, as the O2 Sensor monitor is not finished.
Repeat step [C] 2 times or more in one driving cycle.
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending [E].
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P013623 or P013A00.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system is malfunctioning.
If the judgment result is INCOMPLETE, drive the vehicle with brake (B) selected, and then perform step [C] again.
[A] to [E]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Malfunctioning areas can be identified by performing the Active Test "Control the Injection Volume for A/F Sensor". This Active Test can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following procedure describes how to perform the Active Test "Control the Injection Volume for A/F Sensor" using the Techstream.

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Put the engine in Inspection Mode (Maintenance Mode).
Click here
Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.
Idle the engine for 5 minutes or more with park (P) selected.
Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2.
Perform the Active Test with the engine idling (change the fuel injection volume).
Monitor the output voltage of the air fuel ratio sensor (A/F (O2) Sensor Voltage B1S1) and heated oxygen sensor (O2 Sensor Voltage B1S2) displayed on the Techstream.

HINT:

The Active Test "Control the Injection Volume for A/F Sensor" can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.
Each sensor reacts in accordance with the increase and decrease in the fuel injection volume.

Standard

Techstream Display (Sensor)	Injection Volume	Status	Voltage
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio)	12.5%	Rich	Below 3.1 V
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio)	-12.5%	Lean	Higher than 3.4 V
O2 Sensor Voltage B1S2 (Heated oxygen)	12.5%	Rich	Higher than 0.55 V
O2 Sensor Voltage B1S2 (Heated oxygen)	-12.5%	Lean	Below 0.4 V

NOTICE:

The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Performing the Active Test "Control the Injection Volume for A/F Sensor" allows the output voltage of the air fuel ratio sensor and heated oxygen sensor to be checked and graphed.

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
Read freeze frame data using the Techstream. 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.

PROCEDURE

1.	READ OUTPUT DTC (DTC P013611, P013613, P013614, P013615, P013617, P013623 OR P013A00)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
P013615 is output	A
P013614 or P013617 is output	B
P013611 or P013613 is output	C
P013623 or P013A00 is output	D
P013611, P013613, P013614, P013615, P013617, P013623 or P013A00 and other DTCs are output	E

HINT:

If any DTCs other than P013611, P013613, P013614, P013615, P013617, P013623 or P013A00 are output, troubleshoot those DTCs first.

2.	INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT)

*a	Component without harness connected (Heated Oxygen Sensor)

(a) Disconnect the heated oxygen sensor connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
2 (+B) - 4 (E2)	Always	10 kΩ or higher
2 (+B) - 3 (OX1B)	Always	10 kΩ or higher

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here

REPLACE HEATED OXYGEN SENSOR

3.	CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT)

(a) Turn the power switch off and wait for 5 minutes or more.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C77-56 (HT1B) - C77-99 (OX1B)	Always	10 kΩ or higher

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM)

4.	PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Put the engine in Inspection Mode (Maintenance Mode).

Click here

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

(f) Idle the engine for 5 minutes or more with park (P) selected.

(g) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / O2 Sensor Voltage B1S2.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Volume for A/F Sensor

Data List Display
O2 Sensor Voltage B1S2

(h) Change the fuel injection volume using the Techstream, and monitor the output voltage of the heated oxygen sensor (O2 Sensor Voltage B1S2) displayed on the Techstream.

HINT:

The Active Test "Control the Injection Volume for A/F Sensor" can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.
The heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Standard Voltage:

Fluctuates between 0.4 V or less, and 0.55 V or higher.

GO TO STEP 11

5.	PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Put the engine in Inspection Mode (Maintenance Mode).

Click here

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

(f) Idle the engine for 5 minutes or more with park (P) selected.

(g) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2.

Powertrain > Engine > Active Test

Active Test Display
Control the Injection Volume for A/F Sensor

Data List Display
A/F (O2) Sensor Voltage B1S1
O2 Sensor Voltage B1S2

(h) Change the fuel injection volume using the Techstream, and monitor the output voltage of the air fuel ratio sensor (A/F (O2) Sensor Voltage B1S1) and heated oxygen sensor (O2 Sensor Voltage B1S2) displayed on the Techstream.

HINT:

The Active Test "Control the Injection Volume for A/F Sensor" can be used to lower the fuel injection volume by 12.5% or increase the injection volume by 12.5%.
The air fuel ratio sensor is displayed as A/F (O2) Sensor Voltage B1S1, and the heated oxygen sensor is displayed as O2 Sensor Voltage B1S2 on the Techstream.
The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Techstream Display (Sensor)	Voltage Variation	Proceed to
A/F (O2) Sensor Voltage B1S1 (Air fuel ratio)	Alternates between higher and less than 3.3 V	OK
	Remains at higher than 3.3 V	NG
	Remains at less than 3.3 V	NG

HINT:

A normal heated oxygen sensor voltage (O2 Sensor Voltage B1S2) reacts in accordance with increases and decreases in the fuel injection volume. When the air fuel ratio sensor voltage (A/F (O2) Sensor Voltage B1S1) remains at either less or higher than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning.

CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (FUEL INJECTOR ASSEMBLY, FUEL SYSTEM, INTAKE SYSTEM, ETC.)

6.	PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Put the engine in Inspection Mode (Maintenance Mode).

Click here

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

HINT:

The A/C switch and all accessories should be off.

(f) Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
Engine Independent

(g) Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

NOTICE:

Do not leave the EGR valve open for 10 seconds or more during the Active Test.
Be sure to return the EGR valve to step 0 when the Active Test is completed.
Do not open the EGR valve 30 steps or more during the Active Test.

OK:

The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".

Standard:

Control the EGR Step Position (Active Test)

0 Steps

0 to 30 Steps

Intake Manifold Absolute Pressure

(Data List)

(EGR valve is fully closed)

Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

HINT:

If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).
While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.
Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

GO TO STEP 8

7.	INSPECT EGR VALVE ASSEMBLY

(a) Remove the EGR valve assembly.

Click here

(b) Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.

HINT:

Perform "Inspection After Repair" after replacing the EGR valve assembly.

Click here

REPLACE EGR VALVE ASSEMBLY

8.	REPLACE AIR FUEL RATIO SENSOR

(a) Replace the air fuel ratio sensor.

Click here

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

Click here

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

10.	CHECK WHETHER DTC OUTPUT RECURS (DTC P013611 OR P013613)

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

(d) Check that the DTC judgment result is NORMAL. If the DTC judgment result is INCOMPLETE, perform the confirmation drive pattern again but increase the vehicle speed.

Result

Proceed to

NORMAL

(DTCs are not output)

ABNORMAL

(DTC P013611 or P013613 is output)

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here

END

REPLACE HEATED OXYGEN SENSOR

11.	CHECK FOR EXHAUST GAS LEAK

(a) Check for exhaust gas leaks.

OK:

No gas leaks in exhaust system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the exhaust system.

Click here

REPAIR OR REPLACE EXHAUST SYSTEM

12.	INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE)

(a) Inspect the heated oxygen sensor.

Click here

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here

REPLACE HEATED OXYGEN SENSOR

13.	CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM)

(a) Disconnect the heated oxygen sensor connector.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C57-1 (HT1B) - C77-56 (HT1B)	Always	Below 1 Ω
C57-3 (OX1B) - C77-99 (OX1B)	Always	Below 1 Ω
C57-4 (E2) - C77-131 (EX1B)	Always	Below 1 Ω
C57-1 (HT1B) or C77-56 (HT1B) - Body ground and other terminals	Always	10 kΩ or higher
C57-3 (OX1B) or C77-99 (OX1B) - Body ground and other terminals	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.	PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Put the engine in Inspection Mode (Maintenance Mode).

Click here

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

(e) Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

HINT:

The A/C switch and all accessories should be off.

(f) Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure and Engine Independent.

Powertrain > Engine > Active Test

Active Test Display
Control the EGR Step Position

Data List Display
Intake Manifold Absolute Pressure
Engine Independent

(g) Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

NOTICE:

Do not leave the EGR valve open for 10 seconds or more during the Active Test.
Be sure to return the EGR valve to step 0 when the Active Test is completed.
Do not open the EGR valve 30 steps or more during the Active Test.

OK:

The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".

Standard:

Control the EGR Step Position (Active Test)

0 Steps

0 to 30 Steps

Intake Manifold Absolute Pressure

(Data List)

(EGR valve is fully closed)

Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

HINT:

If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).
While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.
Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

GO TO STEP 16

15.	INSPECT EGR VALVE ASSEMBLY

(a) Remove the EGR valve assembly.

Click here

(b) Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.

HINT:

Perform "Inspection After Repair" after replacing the EGR valve assembly.

Click here

REPLACE EGR VALVE ASSEMBLY

16.	REPLACE HEATED OXYGEN SENSOR

(a) Replace the heated oxygen sensor.

Click here

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here

17.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

18.	CHECK WHETHER DTC OUTPUT RECURS (DTC P013611, P013613, P013614, P013615 OR P013617)

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

(d) Check that the DTC judgment result is NORMAL. If the DTC judgment result is INCOMPLETE, perform the confirmation drive pattern again but increase the vehicle speed.

Result

Proceed to

NORMAL

(DTCs are not output)

ABNORMAL

(DTC P013611, P013613, P013614, P013615 or P013617 is output)

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

Click here

END

REPLACE AIR FUEL RATIO SENSOR

19.	CHECK FOR EXHAUST GAS LEAK

(a) Check for exhaust gas leaks.

OK:

No gas leaks in exhaust system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the exhaust system.

Click here

REPAIR OR REPLACE EXHAUST SYSTEM

20.	CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT)

(a) Turn the power switch off and wait for 5 minutes or more.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C77-56 (HT1B) - C77-99 (OX1B)	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM)

21.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

22.	CHECK WHETHER DTC OUTPUT RECURS (DTC P013623 OR P013A00)

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility

Tester Display
All Readiness

(d) Check that the DTC judgment result is NORMAL. If the DTC judgment result is INCOMPLETE, perform the confirmation drive pattern again but increase the vehicle speed.

Result

Proceed to

NORMAL

(DTCs are not output)

ABNORMAL

(DTC P013623 or P013A00 is output)

HINT:

Perform "Inspection After Repair" after replacing the heated oxygen sensor.

Click here

CHECK FOR INTERMITTENT PROBLEMS

REPLACE HEATED OXYGEN SENSOR