RM38T0EC _51 Engine / Hybrid System _144956 M20F-FXS, M20G-FXS ENGINE CONTROL _0604911 SFI SYSTEM C

M20F-FXS, M20G-FXS ENGINE CONTROL  SFI SYSTEM  P203111  Exhaust Gas Temperature Sensor 2 Bank 1 Circuit Short to Ground  P203115  Exhaust Gas Temperature Sensor 2 Bank 1 Circuit Short to Battery or Open  


DESCRIPTION

Refer to DTC P054411.

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>P054411

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P203111 Exhaust Gas Temperature Sensor 2 Bank 1 Circuit Short to Ground No. 2 exhaust gas temperature sensor output voltage is less than 0.09 V for 3 seconds or more.
(1 trip detection logic)
·

Open or short in No. 2 exhaust gas temperature sensor circuit

·

No. 2 exhaust gas temperature sensor

·

ECM


Comes on SAE Code: P2032
P203115 Exhaust Gas Temperature Sensor 2 Bank 1 Circuit Short to Battery or Open No. 2 exhaust gas temperature sensor output voltage is higher than 4.95 V for 10 seconds or more when all conditions are met:
·

Engine is running

·

The GPF upstream and downstream exhaust gas temperature is 100°C (212°F) or more


(2 trip detection logic)
·

Open or short in No. 2 exhaust gas temperature sensor circuit

·

No. 2 exhaust gas temperature sensor

·

ECM


Comes on SAE Code: P2033

Related Data List
DTC No. Data List
P203111
P203115 		Exhaust Temperature B1S2

HINT:
·

When DTC P203111 and P203115 is output, check the downstream exhaust gas temperature indicated by "Powertrain / Engine / Data List / Exhaust Temperature B1S2" using the GTS.

·

Sensor 2 represents the sensor located downstream of the GPF.


Reference:
Condition Exhaust Temperature B1S2 No. 2 Exhaust Gas Temperature Sensor Condition
Idling with warm engine Constant at between 50 and 400°C (122 and 752°F) Normal
Less than 40°C (104°F) Open circuit
Higher than 1775°C (3227°F) Short circuit


MONITOR DESCRIPTION

The ECM constantly monitors the output voltages from the No. 2 exhaust gas temperature sensors in order to detect problems with the sensors.

No. 2 exhaust gas temperature sensor range check (low voltage) (P203111):

If the output voltage of the No. 2 exhaust gas temperature sensor remains below 0.09 V for 3 seconds or more during engine operation, the ECM illuminates the MIL and stores a DTC.



No. 2 exhaust gas temperature sensor range check (high voltage) (P203115):

If the estimated GPF downstream exhaust gas temperature is 100°C or more during engine operation and the output voltage of the No. 2 exhaust gas temperature sensor remains at more than 4.95 V for 3 seconds or more, the ECM illuminates the MIL and stores a DTC.



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>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

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

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



P203111
1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

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

6.

Turn the ignition switch to ON.

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 [A].

10.

Idle the engine for 3 seconds or more [B].

11.

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

12.

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.



13.

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

14.

Input the DTC: P203111.

15.

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 [A] through [C] again.

·

[A] to [C]: 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.





P203115
A526496E03
1.063,1.76 1.979,1.958 0.917,0.198 10 false Idling 0.813,1.031 2.042,1.229 1.229,0.198 10 false 2500 rpm 2.438,2.573 3.813,2.771 1.375,0.198 10 false 7 minutes 4.125,2.583 5.5,2.781 1.375,0.198 10 false 2 minutes 5.281,2.583 6.042,3.094 0.76,0.51 10 false 10 seconds or more 2.719,1.958 3.177,2.156 0.458,0.198 10 false [A] 4.365,1.229 4.823,1.427 0.458,0.198 10 false [B] 4.979,3.021 5.438,3.219 0.458,0.198 10 false [C] 5.969,3.031 6.427,3.229 0.458,0.198 10 false [E] 5.667,1.927 6.125,2.125 0.458,0.198 10 false [D] 0.583,0.458 2.417,0.656 1.833,0.198 10 false Engine Speed 6.625,2.313 7.094,2.635 0.469,0.323 10 false Time

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

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

6.

Turn the ignition switch to ON.

7.

Turn the GTS on.

8.

Put the engine in Inspection Mode (Maintenance Mode).

9.

Start the engine and idle for 7 minutes [A].

10.

With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 2500 rpm for 2 minutes [B].

11.

Enter the following menus: Powertrain / Engine / Data List / GPF Outlet Exhaust Temperature Sensor Disconnection Detection Possible Temperature Arrival Bank 1.

12.

Check that the value of the Data List item "GPF Outlet Exhaust Temperature Sensor Disconnection Detection Possible Temperature Arrival Bank 1" has changed to "1" [C].

HINT:

If the value of the Data List item "GPF Outlet Exhaust Temperature Sensor Disconnection Detection Possible Temperature Arrival Bank 1" is "0", race the engine at 2500 rpm until the value changes to "1".


13.

Idle the engine for 10 seconds or more [D].

14.

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

15.

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.



16.

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

17.

Input the DTC: P203115.

18.

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 [A] through [E] 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

A445679E54
6.083,2.396 6.542,2.594 0.458,0.198 10 false ECM 6.083,2.219 6.542,2.417 0.458,0.198 10 false C141 5.688,0.615 6.146,0.813 0.458,0.198 10 false THCO 3.719,0.49 3.875,0.688 0.156,0.198 10 false 1 2.104,0.49 2.26,0.688 0.156,0.198 10 false 2 5.344,0.49 5.635,0.677 0.292,0.188 10 false 103 5.354,1.677 5.646,1.875 0.292,0.198 10 false 126 5.729,1.813 6.188,2.01 0.458,0.198 10 false ETCO 1.76,1.188 4.583,1.594 2.823,0.406 10 false No. 2 Exhaust Gas Temperature Sensor 3.281,0.49 3.74,0.688 0.458,0.198 10 false THCI 2.354,0.49 2.813,0.688 0.458,0.198 10 false E2 1.75,1 3.896,1.198 2.146,0.198 10 false C139

CAUTION / NOTICE / HINT

NOTICE:
·

Vehicle Control History may be stored in the hybrid vehicle control ECU 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>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)

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

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, 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>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)



HINT:

Read freeze frame data using the GTS. 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, and other data from the time the malfunction occurred.


PROCEDURE

1.READ VALUE USING GTS (EXHAUST TEMPERATURE B1S2)
a.

Read the value.

Powertrain > Engine > Data List
Tester Display
Exhaust Temperature B1S2
50003 372 1134
Standard:

Same as the actual No. 2 exhaust gas temperature (50 to 400°C [122 to 752°F] during idling with warm engine), and varies after an engine speed of 2500 rpm is maintained for 1 minute.


Result:
Temperature Displayed Proceed to
Less than 40°C (104°F) (After warming up the engine) A
Higher than 1775°C (3227°F) B
OK: Same as the actual exhaust gas temperature (50 to 400°C [122 to 752°F] during idling after warmup), and varies after maintaining an engine speed of 2500 rpm for 1 minute after accelerating the engine from idling to 2500 rpm C




A

2.READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)

B

7.READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)

C

12.CLEAR DTC
2.READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)
a.
A526863C21
1.417,2.417 1.917,2.667 0.5,0.25 1.083,3.583 1.635,3.208 true 2.167,3.583 1.813,3.208 true 0.521,2.667 0.833,2.865 0.313,0.198 10 false *a 0.688,1.802 1,2 0.313,0.198 10 false *1 2.583,1.771 2.896,1.969 0.313,0.198 10 false *2 1.573,0.667 1.99,0.854 0.417,0.188 10 false THCI 1.635,1.375 2.083,1.573 0.448,0.198 10 false E2 1,3.625 1.292,3.802 0.292,0.177 10 false E2 2.167,3.625 2.563,3.823 0.396,0.198 10 false THCI 1.5,2.458 2.417,2.656 0.917,0.198 10 false C139
*1 No. 2 Exhaust Gas Temperature Sensor
*2 ECM
*a Front view of wire harness connector
(to No. 2 Exhaust Gas Temperature Sensor)


Disconnect the No. 2 exhaust gas temperature sensor connector.


b.

Connect terminals 1 (THCI) and 2 (E2) of the No. 2 exhaust gas temperature sensor connector on the wire harness side.


c.

Read the value.

Powertrain > Engine > Data List
Tester Display
Exhaust Temperature B1S2
50003 372 1134
Standard:

Higher than 1775°C (3227°F)


Result:
Proceed to
OK
NG




OK

3.REPLACE NO. 2 EXHAUST GAS TEMPERATURE SENSOR

NG

4.CHECK HARNESS AND CONNECTOR (NO. 2 EXHAUST GAS TEMPERATURE SENSOR - ECM)
4.CHECK HARNESS AND CONNECTOR (NO. 2 EXHAUST GAS TEMPERATURE SENSOR - ECM)
a.

Disconnect the No. 2 exhaust gas temperature sensor connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C139-1 (THCI) - C141-103 (THCO) Always Below 1 Ω
C139-2 (E2) - C141-126 (ETCO) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

5.REPLACE ECM

NG

6.REPAIR OR REPLACE HARNESS OR CONNECTOR
6.REPAIR OR REPLACE HARNESS OR CONNECTOR
a.

Repair or replace the harness or connector.


Result:
Proceed to
NEXT



NEXT

12.CLEAR DTC
7.READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)
a.
A178587C05
0.792,1.594 1.104,1.792 0.313,0.198 10 false *1 2.698,1.677 3.01,1.875 0.313,0.198 10 false *2
*1 No. 2 Exhaust Gas Temperature Sensor
*2 ECM


Disconnect the No. 2 exhaust gas temperature sensor connector.


b.

Read the value.

Powertrain > Engine > Data List
Tester Display
Exhaust Temperature B1S2
50003 372 1134
Standard:

Less than 40°C (104°F)


Result:
Proceed to
OK
NG




OK

8.REPLACE NO. 2 EXHAUST GAS TEMPERATURE SENSOR

NG

9.CHECK HARNESS AND CONNECTOR (NO. 2 EXHAUST GAS TEMPERATURE SENSOR - ECM)
9.CHECK HARNESS AND CONNECTOR (NO. 2 EXHAUST GAS TEMPERATURE SENSOR - ECM)
a.

Disconnect the No. 2 exhaust gas temperature sensor connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C139-1 (THCI) or C141-103 (THCO) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

10.REPLACE ECM

NG

11.REPAIR OR REPLACE HARNESS OR CONNECTOR
11.REPAIR OR REPLACE HARNESS OR CONNECTOR
a.

Repair or replace the harness or connector.


Result:
Proceed to
NEXT



NEXT

12.CLEAR DTC
12.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

Result:
Proceed to
NEXT


b.

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



NEXT

13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
a.

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


b.

Confirm that the DTC is not output.

Powertrain > Engine > Trouble Codes
50001 372

Result:
Proceed to
NEXT



NEXT

END