RM3660EC _51 Engine / Hybrid System _080778 8ZR-FXE ENGINE CONTROL _0393982 SFI SYSTEM C

8ZR-FXE ENGINE CONTROL  SFI SYSTEM  P219519  A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold  P219524  A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High  P219618  A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold  P219623  A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low  


DESCRIPTION

Refer to DTC P003012.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>P003012

HINT:

Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor.


DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P219519 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold While the fuel-cut operation is performed (during vehicle deceleration), the air fuel ratio sensor current is 2.2 mA or more for 3 seconds or more (2 trip detection logic).
·

Open or short in air fuel ratio sensor (sensor 1) circuit

·

Air fuel ratio sensor (sensor 1)

·

Intake system

·

Exhaust gas leak

·

Fuel pressure

·

Fuel injector assembly

·

EGR valve assembly

·

ECM


Comes on DTC stored SAE Code: P2195
P219524 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High Both of the following conditions are met for 5 seconds or more (2 trip detection logic):
1.

Air fuel ratio sensor voltage is higher than 0.1883 V.

2.

Heated oxygen sensor voltage is 0.21 V or higher.


·

Open or short in air fuel ratio sensor (sensor 1) circuit

·

Air fuel ratio sensor (sensor 1)

·

Intake system

·

Exhaust gas leak

·

Fuel pressure

·

Fuel injector assembly

·

EGR valve assembly

·

ECM


Comes on DTC stored SAE Code: P2195
P219618 A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold While the fuel-cut operation is performed (during vehicle deceleration), the air fuel ratio sensor current is less than 0.7 mA for 3 seconds or more (2 trip detection logic).
·

Open or short in air fuel ratio sensor (sensor 1) circuit

·

Air fuel ratio sensor (sensor 1)

·

Intake system

·

Exhaust gas leak

·

Fuel pressure

·

Fuel injector assembly

·

EGR valve assembly

·

ECM


Comes on DTC stored SAE Code: P2196
P219623 A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low Both of the following conditions are met for 5 seconds or more (2 trip detection logic):
1.

Air fuel ratio sensor voltage is less than -0.1883 V.

2.

Heated oxygen sensor voltage is less than 0.71 V.


·

Open or short in air fuel ratio sensor (sensor 1) circuit

·

Air fuel ratio sensor (sensor 1)

·

Intake system

·

Exhaust gas leak

·

Fuel pressure

·

Fuel injector assembly

·

EGR valve assembly

·

ECM


Comes on DTC stored SAE Code: P2196

HINT:
·

When any of these DTCs are stored, check the air fuel ratio sensor output voltage by entering the following menus on the GTS: Powertrain / Engine / Data List / A/F (O2) Sensor Voltage B1S1.

·

Short-term fuel trim values can also be read using the GTS.

·

The ECM regulates the voltages at terminals A1A+ and A1A- of the ECM to a constant level. Therefore, the air fuel ratio sensor output voltage cannot be confirmed without using the GTS.

·

If an air fuel ratio sensor malfunction is detected, the ECM will store a DTC.



MONITOR DESCRIPTION

Sensor Voltage Detection Monitor:

Under air fuel ratio feedback control, If the air fuel ratio sensor output voltage is less than -0.1883 V (very rich condition) for 5 seconds despite the heated oxygen sensor output voltage being less than 0.71 V, the ECM stores DTC P219623. Alternatively, if the air fuel ratio sensor output voltage is higher than 0.1883 V (very lean condition) for 5 seconds despite the heated oxygen sensor output voltage being 0.21 V or higher, DTC P219524 is stored.


Sensor Current Detection Monitor:

A rich air fuel mixture causes a low air fuel ratio sensor current, and a lean air fuel mixture causes a high air fuel ratio sensor current. Therefore, the sensor output becomes low during acceleration, and it becomes high during deceleration with the throttle valve fully closed. The ECM monitors the air fuel ratio sensor current during fuel-cut and detects any abnormal current values.

If the air fuel ratio sensor output is 2.2 mA or more for 3 seconds or more of cumulative time, the ECM interprets this as a malfunction of the air fuel ratio sensor and stores DTC P219519 (stuck on high side). If the air fuel ratio sensor output is less than 0.7 mA for 3 seconds or more of cumulative time, the ECM stores DTC P219618 (stuck on low side).


A284399E03
2.385,2.281 2.188,1.594 2.188,1.594 2.323,1.594 false 4.406,2.281 4.26,1.667 4.26,1.667 4.396,1.667 false 5.771,2.281 5.677,1.656 5.677,1.656 5.813,1.656 false 0.177,0.115 2.76,0.323 2.583,0.208 10 Air Fuel Ratio Sensor Current Monitor 2.833,0.323 6.094,0.51 3.26,0.188 10 Cumulative Time "t" = t1 + t2 = 3 seconds or more 1.469,1.208 1.854,1.396 0.385,0.188 10 OFF 1.49,0.917 1.875,1.104 0.385,0.188 10 ON 0.646,1.073 1.24,1.281 0.594,0.208 10 Fuel-cut 0.448,2.833 1.802,3.104 1.354,0.271 10 High Side Threshold 2.375,1.51 3.729,1.781 1.354,0.271 10 Delay (3 seconds) 0.49,3.49 1.844,3.76 1.354,0.271 10 Low Side Threshold 0.479,2.219 1.833,2.49 1.354,0.271 10 Sensor Current (mA) 4.448,1.563 5.802,1.833 1.354,0.271 10 Delay (3 seconds) 5.865,1.563 7.073,1.823 1.208,0.26 10 Delay (3 seconds) 6.01,3.813 6.292,4.031 0.281,0.219 10 t2 4.708,3.813 4.99,4.031 0.281,0.219 10 t1 2.385,3.635 3.74,3.906 1.354,0.271 10 3 seconds or more 4.708,4.24 6.365,4.427 1.656,0.188 10 Abnormal Sensor Output 2.417,4.25 4.073,4.438 1.656,0.188 10 Normal Sensor Output 6.667,4.26 7.031,4.448 0.365,0.188 10 Time

MONITOR STRATEGY

Required Sensors/Components (Main) Air fuel ratio sensor
Required Sensors/Components (Related) Heated oxygen sensor
Frequency of Operation Continuous: Sensor voltage detection monitor
Once per driving cycle: Sensor current detection monitor
Duration 3 seconds: Sensor current detection monitor
5 seconds: Sensor voltage detection monitor

TYPICAL ENABLING CONDITIONS

Sensor Voltage Detection Monitor
Time after engine start 30 seconds or more
Air fuel ratio sensor status Activated
Fuel system status Closed-loop

Sensor Current Detection Monitor
Auxiliary battery voltage 11 V or higher
Engine coolant temperature 75°C (167°F) or higher
Atmospheric pressure 76 kPa(abs) [11 psi(abs)] or higher
Air fuel ratio sensor status Activated
Continuous time of fuel-cut 3 seconds or more, and less than 10 seconds

TYPICAL MALFUNCTION THRESHOLDS

P219524: Sensor Voltage Detection Monitor (Lean Side Malfunction)
Heated oxygen sensor voltage 0.21 V or higher
Air fuel ratio sensor voltage Higher than 0.1883 V

P219623: Sensor Voltage Detection Monitor (Rich Side Malfunction)
Heated oxygen sensor voltage Less than 0.71 V
Air fuel ratio sensor voltage Less than -0.1883 V

P219519: Sensor Current Detection Monitor (High Side Malfunction)
Duration of following condition 3 seconds or more
Air fuel ratio sensor current 2.2 mA or more

P219618: Sensor Current Detection Monitor (Low Side Malfunction)
Duration of following condition 3 seconds or more
Air fuel ratio sensor current Less than 0.7 mA

CONFIRMATION DRIVING PATTERN

HINT:
·

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 hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



A283818E62
2.448,1.51 3.052,0.698 3.052,0.698 2.833,0.698 true 5.448,1.667 5.75,0.583 true 5.021,1.521 4.5,1.521 false 6.333,2.25 5.375,2.25 false 4.052,3.531 3.823,3.354 true 4.927,1.677 4.5,0.583 true 5.542,3.167 5.708,3.167 5.708,3.167 5.5,2.74 true 4.708,2.958 4.875,2.958 4.875,2.958 4.99,2.729 true 0.073,0.24 3.25,0.5 3.177,0.26 10 false Engine Coolant Temperature: 75°C or higher 0.156,0.865 1.104,1.094 0.948,0.229 10 false Vehicle Speed 1.198,0.594 2.833,1.01 1.635,0.417 10 false Between 75 and 100 km/h [Engine running] 0.719,2.281 1.167,2.583 0.448,0.302 10 false Idling 1.25,2.865 2.083,3.083 0.833,0.219 10 false Warming up 2.49,2.875 3.219,3.396 0.729,0.521 10 false 10 minutes or more 3.427,1.458 4.479,1.854 1.052,0.396 10 false 75 km/h or more [Engine running] 3.396,0.448 4.542,0.865 1.146,0.417 10 false Accelerator Pedal Depressed 4.667,0.708 5.667,0.917 1,0.208 10 false At least 3 times 5.823,0.438 7.052,0.958 1.229,0.521 10 false Accelerator Pedal Released (Fuel-cut) 6.427,2.177 6.958,2.75 0.531,0.573 10 false 10 km/h [Engine running] 6.406,2.875 6.823,3.125 0.417,0.25 10 false Time 4.375,3.073 5.604,3.344 1.229,0.271 10 false 5 seconds or more 4.094,3.469 5.417,3.667 1.323,0.198 10 false Refer to figure below 3.448,2.865 4.729,3.229 1.281,0.365 10 false 10 seconds or more 1.552,2.167 1.813,2.385 0.26,0.219 10 false [A] 2.708,1.302 2.969,1.521 0.26,0.219 10 false [B] 3.844,2.167 4.083,2.417 0.24,0.25 10 false [C] 4.99,1.302 5.25,1.521 0.26,0.219 10 false [D] 5.5,1.594 5.76,1.813 0.26,0.219 10 false [E] 6.083,3.115 6.344,3.333 0.26,0.219 10 false [F]

A268862E46
3.625,2.625 4.135,0.917 4.135,0.917 4.26,0.917 false 3.375,2.625 3.375,0.594 3.375,0.594 3.5,0.594 false 2.635,1.302 2.969,1.375 false 0.104,0.042 3.042,0.24 2.938,0.198 10 false Driving Pattern Detail for [C] through [E]: 0.521,0.552 1.667,0.792 1.146,0.24 10 false Vehicle Speed 2.823,0.156 7,0.406 4.177,0.25 10 false Cumulative Detection Period "t" = t1 + t2 + t3 = 3 seconds or more 1.094,2.365 1.51,2.563 0.417,0.198 10 false Idling 2.188,2.948 2.698,3.229 0.51,0.281 10 false Idling 3.177,3.115 3.833,3.479 0.656,0.365 10 false 5 seconds or more 2.188,2.25 2.448,2.521 0.26,0.271 10 false [C] 3.031,1.146 3.313,1.469 0.281,0.323 10 false [D] 3.469,1.542 3.729,1.813 0.26,0.271 10 false [E] 3.552,0.51 4.74,0.708 1.188,0.198 10 false Delay (3 seconds) 4.313,0.833 5.75,1.031 1.438,0.198 10 false Detection Period t1 4.813,2.375 4.99,2.625 0.177,0.25 10 false t2 6.042,2.396 6.302,2.635 0.26,0.24 10 false t3 6.49,2.781 6.875,2.979 0.385,0.198 10 false Time 4.375,3.115 5.031,3.479 0.656,0.365 10 false 5 seconds or more 5.604,3.115 6.26,3.479 0.656,0.365 10 false 5 seconds or more 1.583,1.156 2.625,1.594 1.042,0.438 10 false 75 km/h or more [Engine running]

1.

Connect the GTS to the DLC3.

2.

Turn the power switch on (IG).

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

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

6.

Turn the power switch on (IG).

7.

Turn the GTS on.

8.

Put the engine in Inspection Mode (Maintenance Mode).

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>INSPECTION MODE PROCEDURE

9.

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

10.

With the engine running, drive the vehicle at a speed between 75 and 100 km/h (47 and 62 mph) for at least 10 minutes [B].

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.


11.

With shift state B selected [C] and the engine running, accelerate the vehicle to 75 km/h (47 mph) or more by depressing the accelerator pedal for at least 10 seconds [D].

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.


12.

Soon after performing step [D] above, release the accelerator pedal for at least 5 seconds or more without depressing the brake pedal in order to execute fuel-cut control [E].

13.

Allow the vehicle to decelerate until the vehicle speed is less than 10 km/h (6 mph).

14.

Repeat steps [C] through [E] above at least 3 times in one driving cycle.

15.

Enter the following menus: Powertrain / Engine / Trouble Codes [F].

16.

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.



17.

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

18.

Input the DTC: P219519, P219524, P219618 or P219623.

19.

Check the DTC judgment result.

GTS 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 has a malfunction.

·

If the judgment result is INCOMPLETE, perform steps [B] through [F] again.

·

[A] to [F]: 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.




CAUTION / NOTICE / HINT

NOTICE:
·

Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)

(Select Powertrain in Health Check and then check the time stamp data.)

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>VEHICLE CONTROL HISTORY (RoB)

·

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



HINT:
·

A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.

·

A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

·

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 GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. 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.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P219519, P219524, P219618 OR P219623)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Trouble Codes.


e.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
DTC P219519, P219524, P219618 or P219623 is output A
DTC P219519, P219524, P219618 or P219623 and P013613 or P013617 are output
DTC P219519, P219524, P219618 or P219623 and other DTCs are output B


HINT:

If any DTCs relating to the air fuel ratio sensor (DTCs for the air fuel ratio sensor heater or air fuel ratio sensor admittance) are output, troubleshoot those DTCs first.




A

2.CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST

B

GO TO DTC CHART

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST
a.

Has the vehicle run out of fuel in the past?


Result:
Proceed to
YES
NO



YES

3.CLEAR DTC

NO

5.CLEAR DTC
3.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

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


Result:
Proceed to
NEXT



NEXT

4.CHECK WHETHER DTC OUTPUT RECURS (DTC P219519, P219524, P219618 OR P219623)
4.CHECK WHETHER DTC OUTPUT RECURS (DTC P219519, P219524, P219618 OR P219623)
a.

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


b.

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

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Input the DTC: P219519, P219524, P219618 or P219623.


d.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P219519, P219524, P219618 or P219623 is output) 		B




A

DTC CAUSED BY RUNNING OUT OF FUEL

B

5.CLEAR DTC
5.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

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


Result:
Proceed to
NEXT



NEXT

6.READ VALUE USING GTS (A/F (O2) SENSOR CURRENT B1S1)
6.READ VALUE USING GTS (A/F (O2) SENSOR CURRENT B1S1)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility
Tester Display
Inspection Mode
50005 397 2103

e.

Start the engine.


f.

Enter the following menus: Powertrain / Engine / Data List / A/F (O2) Sensor Current B1S1.

Powertrain > Engine > Data List
Tester Display
A/F (O2) Sensor Current B1S1
50003 372 230

g.

Check the test value of the air fuel ratio sensor output current during fuel-cut, referring to the Driving Pattern Detail for [C] through [E] in Confirmation Driving Pattern.

HINT:
·

To measure the air fuel ratio sensor current precisely, perform the fuel-cut operation as long as possible.

·

If it is difficult to measure the air fuel ratio sensor current, use the snapshot function of the GTS.



Result:
Test Value Proceed to
Within normal range
(0.7 mA or higher, and less than 2.2 mA) 		A
Outside normal range
(Less than 0.7 mA, or 2.2 mA or higher) 		B




A

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

B

17.REPLACE AIR FUEL RATIO SENSOR
7.PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility
Tester Display
Inspection Mode
50005 397 2103

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 / Coolant Temperature, 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
Coolant Temperature
A/F (O2) Sensor Voltage B1S1
O2 Sensor Voltage B1S2
50004 372 8 205,225,218

h.

Change the fuel injection volume using the GTS, 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 GTS.

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 GTS.

·

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.



Standard:
GTS Display (Sensor) Injection Volume Status Voltage
A/F (O2) Sensor Voltage B1S1
(Air fuel ratio) 		12.5% Rich Below 0.075 V
-12.5% Lean Higher than 0.037 V
O2 Sensor Voltage B1S2
(Heated oxygen) 		12.5% Rich Higher than 0.55 V
-12.5% Lean Below 0.4 V


Result:
Status of A/F (O2) Sensor Voltage B1S1 Status of O2 Sensor Voltage B1S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Proceed to
Lean Lean Actual air fuel ratio lean A
Rich Rich Actual air fuel ratio rich
Lean Lean/Rich Air fuel ratio sensor malfunction B
Rich Lean/Rich Air fuel ratio sensor malfunction
Lean/Rich Lean/Rich Normal C


Lean: While performing the Active Test [Control the Injection Volume for A/F Sensor], the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1) is consistently higher than 0.037 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently below 0.4 V.

Rich: While performing the Active Test [Control the Injection Volume for A/F Sensor], the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1) is consistently below -0.075 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently higher than 0.55 V.

Lean/Rich: While performing the Active Test [Control the Injection Volume for A/F Sensor], the output voltage of the fuel ratio sensor (A/F (O2) Sensor Voltage B1S1) or heated oxygen sensor (O2 Sensor Voltage B1S2) alternates correctly.


HINT:

Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2].

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST




A

8.CHECK INTAKE SYSTEM

B

17.REPLACE AIR FUEL RATIO SENSOR

C

15.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
8.CHECK INTAKE SYSTEM
a.

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>8ZR-FXE (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION

OK:

No leaks from the intake system.


HINT:

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

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

9.CHECK FOR EXHAUST GAS LEAK

NG

REPAIR OR REPLACE INTAKE SYSTEM

9.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 hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)

NG

REPAIR OR REPLACE EXHAUST SYSTEM

10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility
Tester Display
Inspection Mode
50005 397 2103

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, Coolant Temperature and Engine Independent.

Powertrain > Engine > Active Test
Active Test Display
Control the EGR Step Position
Data List Display
Intake Manifold Absolute Pressure
Coolant Temperature
Engine Independent
50004 372 25 385,205,428

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.




Result:
Proceed to
OK
NG



OK

12.CHECK FUEL PRESSURE

NG

11.INSPECT EGR VALVE ASSEMBLY
11.INSPECT EGR VALVE ASSEMBLY
a.

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL


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 hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

12.CHECK FUEL PRESSURE

NG

REPLACE EGR VALVE ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL


12.CHECK FUEL PRESSURE
a.

Check the fuel pressure.

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL SYSTEM>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

13.INSPECT FUEL INJECTOR ASSEMBLY

NG

14.INSPECT FUEL PUMP
13.INSPECT FUEL INJECTOR ASSEMBLY
a.

Inspect the fuel injector assembly (whether fuel volume is high or low, and whether injection pattern is poor).

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL INJECTOR>INSPECTION

HINT:

Perform "Inspection After Repair" after replacing the fuel injector assembly.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

17.REPLACE AIR FUEL RATIO SENSOR

NG

REPLACE FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (FUEL)>FUEL INJECTOR>REMOVAL


15.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility
Tester Display
Inspection Mode
50005 397 2103

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, Coolant Temperature and Engine Independent.

Powertrain > Engine > Active Test
Active Test Display
Control the EGR Step Position
Data List Display
Intake Manifold Absolute Pressure
Coolant Temperature
Engine Independent
50004 372 25 385,205,428

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.




Result:
Proceed to
OK
NG



OK

17.REPLACE AIR FUEL RATIO SENSOR

NG

16.INSPECT EGR VALVE ASSEMBLY
16.INSPECT EGR VALVE ASSEMBLY
a.

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL


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 hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

17.REPLACE AIR FUEL RATIO SENSOR

NG

REPLACE EGR VALVE ASSEMBLY

Click hereEngine / Hybrid System>8ZR-FXE (EMISSION CONTROL)>EGR VALVE>REMOVAL


17.REPLACE AIR FUEL RATIO SENSOR
a.

Replace the air fuel ratio sensor.

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>AIR FUEL RATIO SENSOR>REMOVAL

HINT:

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

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
NEXT



NEXT

18.CLEAR DTC
18.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

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


Result:
Proceed to
NEXT



NEXT

19.CHECK WHETHER DTC OUTPUT RECURS (DTC P219519, P219524, P219618 OR P219623)
19.CHECK WHETHER DTC OUTPUT RECURS (DTC P219519, P219524, P219618 OR P219623)
a.

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


b.

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

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

c.

Input the DTC: P219519, P219524, P219618 or P219623.


d.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P219519, P219524, P219618 or P219623 is output) 		B




A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>8ZR-FXE (ENGINE CONTROL)>ECM>REMOVAL