15:54, 01/02/2023 Print-Toyota Service Information

Print Exit

1GD-FTV ENGINE CONTROL ECD SYSTEM(w/ DPF [Production date from 2021/08]) P242A11 Exhaust Gas
Temperature Sensor 3 Bank 1 Circuit Short to Ground P242A15 Exhaust Gas Temperature Sensor 3 Bank 1 Circuit
Short to Battery or Open

DESCRIPTION

Refer to DTC P054411.

Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECD SYSTEM (w/ DPF [Production date from
2021/08])>P054411
DTC Detection
DTC No. Detection Item Trouble Area MIL Memory Note
Condition

· Open or short in
No. 3 exhaust
No. 3 exhaust gas gas
Exhaust Gas temperature sensor temperature
sensor circuit SAE
Temperature Sensor 3 output voltage is below
P242A11 · No. 3 exhaust Comes on DTC stored Code:
Bank 1 Circuit Short to 0.2 V for 3 seconds or
gas P242C
Ground more.
(1 trip detection logic) temperature
sensor
· ECM

No. 3 exhaust gas ·

temperature sensor
output voltage is higher
than 4.95 V for 3
seconds or more when
all conditions are met: ·
· After starting
Open or short in
the engine, 11
No. 3 exhaust
minutes or
gas
more elapses. ·
Exhaust Gas temperature
· Coolant SAE
Temperature Sensor 3 sensor circuit
P242A15 temperature is Comes on DTC stored Code:
Bank 1 Circuit Short to No. 3 exhaust
70°C (158°F) or P242D
Battery or Open gas
higher.
temperature
· The No. 2
sensor
exhaust gas
ECM
temperature
sensor is
continuously
120°C (248°F)
or more for 15
seconds.

(1 trip detection logic)

Related Data List

DTC No. Data List
P242A11
Exhaust Temperature B1S3
P242A15

HINT:
· DTC P20CF00 (Exhaust fuel addition injector assembly malfunction) may be stored if there is an open malfunction in an
exhaust gas temperature sensor circuit.
· When DTC P242A11 and P242A15 is output, check the downstream exhaust gas temperature indicated by "Powertrain /
Engine and Transmission / Data List / Diesel Exhaust / Exhaust Temperature B1S3" using the GTS.

Reference:
No. 3 Exhaust Gas Temperature
Condition Exhaust Temperature B1S3
Sensor Condition

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 1/11
15:54, 01/02/2023 Print-Toyota Service Information

No. 3 Exhaust Gas Temperature

Condition Exhaust Temperature B1S3
Sensor Condition
Constant at between 50 and 750°C
Normal
(122 and 1382°F)
Idling with warm engine
0°C (32°F) Open circuit
1000°C (1832°F) Short circuit

MONITOR DESCRIPTION

The ECM constantly monitors the output voltages from the No. 3 exhaust gas temperature sensors in order to detect problems
with the sensors. When the sensor output voltage deviates from the normal operating range (between 0.2 V and 4.95 V) for
more than 3 seconds after the engine is warmed up, the ECM interprets this as malfunction of the sensor circuit and illuminates
the MIL.

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern

P242A11 Engine switch on (IG) for 3 seconds or more
Idle the engine for 3 seconds or more after warming up the engine (the engine
coolant temperature is 70°C (158°F) or higher), allowing 11 minutes to elapse after
P242A15
starting the engine and waiting for the No. 2 exhaust gas temperature sensor to be
120°C (248°F) or more for 15 seconds.

WIRING DIAGRAM

Refer to DTC P054411.

Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECD SYSTEM (w/ DPF [Production date from
2021/08])>P054411

CAUTION / NOTICE / HINT

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here Engine / Hybrid System>1GD-FTV (ENGINE
CONTROL)>ECD SYSTEM (w/ DPF [Production date from 2021/08])>REGISTRATION) and initialization (Click here Engine /
Hybrid System>1GD-FTV (ENGINE CONTROL)>ECD SYSTEM (w/ DPF [Production date from 2021/08])>INITIALIZATION).

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.
· If DTC P242A11 is stored and the exhaust gas temperature sensor circuit is not malfunctioning, check if the exhaust
manifold converter sub-assembly has melted as DTC P242A11 may be stored when the exhaust manifold converter sub-
assembly melts and the exhaust gas temperature sensor is exposed to high temperatures.
· Sensor 3 represents the sensor located upstream of the DPF catalytic converter.

PROCEDURE

1.READ VALUE USING GTS (EXHAUST TEMPERATURE B1S3)

a. Connect the GTS to the DLC3.

b. Turn the engine switch on (IG) and turn the GTS on.

c. Enter the following menus: Powertrain / Engine and Transmission / Data List / Diesel Exhaust / Exhaust Temperature
B1S3.
Powertrain > Engine and Transmission > Data List

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 2/11
15:54, 01/02/2023 Print-Toyota Service Information

Tester Display
Exhaust Temperature B1S3

Execute

d. Read the value.

Standard:
Same as the actual No. 3 exhaust gas temperature (50 to 750°C [122 to 1382°F] during idling with warm
engine), and varies after an engine speed of 3000 rpm is maintained for 1 minute.

Result:
Temperature Displayed Proceed to
0°C (32°F) (After warming up the engine) A
1000°C (1832°F) B
OK: Same as the actual exhaust gas temperature (50 to 750°C [122 to 1382°F] during
idling after warmup), and varies after maintaining an engine speed of 3000 rpm for 1 C
minute after accelerating the engine from idling to 3000 rpm

HINT:
· If there is a short circuit, the GTS will indicate 0°C (32°F).
· If there is an open circuit, the GTS will indicate 1000°C (1832°F).

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

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

14.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

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

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 3/11
15:54, 01/02/2023 Print-Toyota Service Information

a.

*1 No. 3 Exhaust Gas Temperature Sensor

*2 ECM
Front view of wire harness connector
*a
(to No. 3 Exhaust Gas Temperature Sensor)

Disconnect the No. 3 exhaust gas temperature sensor connector.

b. Connect terminals 1 (E2) and 2 (THCO) of the exhaust gas temperature sensor connector on the wire harness side.

c. Connect the GTS to the DLC3.

d. Turn the engine switch on (IG) and turn the GTS on.

e. Enter the following menus: Powertrain / Engine and Transmission / Data List / Diesel Exhaust / Exhaust Temperature
B1S3.
Powertrain > Engine and Transmission > Data List
Tester Display
Exhaust Temperature B1S3

Execute

f. Read the value.

Standard:
1000°C (1832°F)

Result:
Proceed to
OK
NG

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 4/11
15:54, 01/02/2023 Print-Toyota Service Information

OK

3.REPLACE NO. 3 EXHAUST GAS TEMPERATURE SENSOR

NG

4.CHECK HARNESS AND CONNECTOR (NO. 3 EXHAUST GAS TEMPERATURE SENSOR - ECM)

3.REPLACE NO. 3 EXHAUST GAS TEMPERATURE SENSOR

a. Replace the No. 3 exhaust gas temperature sensor.

Click hereEngine / Hybrid System>1GD-FTV (EMISSION CONTROL)>EXHAUST GAS TEMPERATURE SENSOR (Production
Date from 2021/08)>REMOVAL

Result:
Proceed to
NEXT

NEXT

7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

4.CHECK HARNESS AND CONNECTOR (NO. 3 EXHAUST GAS TEMPERATURE SENSOR - ECM)

a. Disconnect the No. 3 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
C152-2 (THCO) - C57-33 (THCO) Always Below 1 Ω
C152-1 (E2) - C57-27 (E2) Always Below 1 Ω

Result:
Proceed to
OK
NG

OK

5.REPLACE ECM

NG

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

5.REPLACE ECM

a. Replace the ECM.

Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECM>REMOVAL

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 5/11
15:54, 01/02/2023 Print-Toyota Service Information

Result:
Proceed to
NEXT

NEXT

7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

6.REPAIR OR REPLACE HARNESS OR CONNECTOR

a. Repair or replace the harness or connector.

Result:
Proceed to
NEXT

NEXT

7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

7.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

a. Connect the GTS to the DLC3.

b. Turn the engine switch on (IG) and turn the GTS on.

c. Clear the DTCs.

Powertrain > Engine and Transmission > Clear DTCs

Execute

d. Turn the engine switch off and wait for 30 seconds or more.

e. Start the engine and turn the GTS on.

f. Idle the engine for 3 seconds or more after warming up the engine (the engine coolant temperature is 70°C (158°F) or
higher), allowing 11 minutes to elapse after starting the engine and waiting for the No. 2 exhaust gas temperature sensor
to be 120°C (248°F) or more for 15 seconds.

g. Enter the following menus: Powertrain / Engine and Transmission / Trouble Codes.
Powertrain > Engine and Transmission > Trouble Codes

Execute

h. Confirm that the DTC is not output.

Result:
Proceed to
NEXT

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 6/11
15:54, 01/02/2023 Print-Toyota Service Information

NEXT

END

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 7/11
15:54, 01/02/2023 Print-Toyota Service Information

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

a.

*1 No. 3 Exhaust Gas Temperature Sensor

*2 ECM

Disconnect the No. 3 exhaust gas temperature sensor connector.

b. Connect the GTS to the DLC3.

c. Turn the engine switch on (IG) and turn the GTS on.

d. Enter the following menus: Powertrain / Engine and Transmission / Data List / Diesel Exhaust / Exhaust Temperature
B1S3.
Powertrain > Engine and Transmission > Data List
Tester Display
Exhaust Temperature B1S3

Execute

e. Read the value.

Standard:
0°C (32°F)

Result:
Proceed to
OK
NG

OK

9.REPLACE NO. 3 EXHAUST GAS TEMPERATURE SENSOR

NG

10.CHECK HARNESS AND CONNECTOR (NO. 3 EXHAUST GAS TEMPERATURE SENSOR - ECM)

9.REPLACE NO. 3 EXHAUST GAS TEMPERATURE SENSOR

a. Replace the No. 3 exhaust gas temperature sensor.

Click hereEngine / Hybrid System>1GD-FTV (EMISSION CONTROL)>EXHAUST GAS TEMPERATURE SENSOR (Production
Date from 2021/08)>REMOVAL

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 8/11
15:54, 01/02/2023 Print-Toyota Service Information

Result:
Proceed to
NEXT

NEXT

13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

10.CHECK HARNESS AND CONNECTOR (NO. 3 EXHAUST GAS TEMPERATURE SENSOR - ECM)

a. Disconnect the No. 3 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
C152-2 (THCO) or C57-33 (THCO) -
Always 10 kΩ or higher
Body ground

Result:
Proceed to
OK
NG

OK

11.REPLACE ECM

NG

12.REPAIR OR REPLACE HARNESS OR CONNECTOR

11.REPLACE ECM

a. Replace the ECM.

Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECM>REMOVAL

Result:
Proceed to
NEXT

NEXT

13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

12.REPAIR OR REPLACE HARNESS OR CONNECTOR

a. Repair or replace the harness or connector.

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 9/11
15:54, 01/02/2023 Print-Toyota Service Information

Result:
Proceed to
NEXT

NEXT

13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

13.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

a. Connect the GTS to the DLC3.

b. Turn the engine switch on (IG) and turn the GTS on.

c. Clear the DTCs.

Powertrain > Engine and Transmission > Clear DTCs

Execute

d. Turn the engine switch and wait for 30 seconds or more.

e. Turn the engine switch on (IG) for 3 seconds or more.

f. Enter the following menus: Powertrain / Engine and Transmission / Trouble Codes.
Powertrain > Engine and Transmission > Trouble Codes

Execute

g. Confirm that the DTC is not output.

Result:
Proceed to
NEXT

NEXT

END

14.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

a. Connect the GTS to the DLC3.

b. Turn the engine switch on (IG) and turn the GTS on.

c. Clear the DTCs.

Powertrain > Engine and Transmission > Clear DTCs

Execute

d. Turn the engine switch and wait for 30 seconds or more.

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 10/11
15:54, 01/02/2023 Print-Toyota Service Information

e. Turn the engine switch on (IG) for 3 seconds or more.

f. Turn the GTS on.

g. Start the engine.

h. Idle the engine for 3 seconds or more after warming up the engine (the engine coolant temperature is 70°C (158°F) or
higher), allowing 11 minutes to elapse after starting the engine and waiting for the No. 2 exhaust gas temperature sensor
to be 120°C (248°F) or more for 15 seconds.

i. Enter the following menus: Powertrain / Engine and Transmission / Trouble Codes.
Powertrain > Engine and Transmission > Trouble Codes

Execute

j. Confirm that the DTC is not output.

Result:
Proceed to
NEXT

NEXT

END

© 2012 TOYOTA MOTOR CORPORATION. All Rights Reserved.

https://global.service3s.toyota.co.jp/home/en/N00147/repair/contents/RM100000001WWTG.html?PUB_TYPE=RM&MODE=1 11/11