Dtc P2084 Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2084 AND P242B)

READ VALUE USING INTELLIGENT TESTER (EXHAUST TEMPERATURE B1S2 AND B1S3)

READ VALUE USING INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE)

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

REPLACE ECM

REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S2

REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S3

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P2084 Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

DTC P242B Exhaust Gas Temperature Sensor Circuit Range / Performance Bank 1 Sensor 3


DESCRIPTION

Refer to DTC P0545 (HILUX_TGN26 RM00000188D05NX.html).

P2084
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Stop the engine, leave the vehicle as is for 1 to 2 hours and confirm that "Exhaust Temperature B1S2" is approximately the same value as "Intake Air".
All conditions are met (2 trip detection logic):
(a) The battery voltage is 8 V or higher.
(b) After the engine is stopped and the vehicle is left as is for 10 hours or more, the difference between "Exhaust Temperature B1S2" and "Coolant Temp" is 400°C (752 °F) or more when the ignition switch is turned to ON.
  1. Exhaust gas temperature sensor B1S2
  2. Engine coolant temperature sensor
  3. ECM (soak timer)

P242B
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Stop the engine, leave the vehicle as is for 1 to 2 hours and confirm that "Exhaust Temperature B1S3" is approximately the same value as "Intake Air".
All conditions are met (2 trip detection logic):
(a) The battery voltage is 8 V or higher.
(b) After the engine is stopped and the vehicle is left as is for 10 hours or more, the difference between "Exhaust Temperature B1S3" and "Coolant Temp" is 400°C (752 °F) or more when the ignition switch is turned to ON.
  1. Exhaust gas temperature sensor B1S3
  2. Engine coolant temperature sensor
  3. ECM (soak timer)

Related Data List
DTC No.
Data List
P2084
  1. Exhaust Temperature B1S2
  2. Exhaust Temperature B1S3
  3. Coolant temp
  4. Intake Air
P242B
HINT:
  1. Sensor 2 represents the sensor located upstream of the DPF catalytic converter.
  2. Sensor 3 represents the sensor located downstream of the DPF catalytic converter.
  3. If DTC P2084 and/or P242B is stored, the following symptoms may appear:
    1. White smoke

MONITOR DESCRIPTION

The ECM compares the values from exhaust temperature sensors B1S2 and B1S3 with the engine coolant temperature when the ignition switch is turned to ON after the vehicle has been left soaking for 10 hours or more. If the difference is 400°C (752 °F) or more, a DTC indicating an exhaust gas temperature sensor malfunction is stored and the MIL is illuminated (2 trip detection logic).

WIRING DIAGRAM

Refer to DTC P0545 (HILUX_TGN26 RM00000188D05NX_03.html).

INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  2. After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK07EX.html) and initialization (HILUX_TGN26 RM000000TIN056X.html).
  3. After replacing the fuel supply pump assembly, the ECM needs initialization (HILUX_TGN26 RM000000TIN056X.html).
  4. After replacing an injector assembly, the ECM needs registration (HILUX_TGN26 RM0000012XK07EX.html).
HINT:
Read freeze frame data using the intelligent tester. 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.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2084 AND P242B)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read DTCs.

    Result
    Result
    		Proceed to
    P2084 and/or P242B is output
    		A
    Except above
    P2084 and/or P242B and other DTCs are output
    		B



B
GO TO DTC CHART (HILUX_TGN26 RM0000031HW04RX.html)
A


2.READ VALUE USING INTELLIGENT TESTER (EXHAUST TEMPERATURE B1S2 AND B1S3)

  1. Leave the vehicle as is for 1 to 2 hours with the engine stopped.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Exhaust Temperature B1S2 and Exhaust Temperature B1S3.

  1. Read the values.

    Result:

    Result
    		Proceed to
    Value of "Exhaust Temperature B1S2" is 400°C (752°F) or higher
    		A
    Value of "Exhaust Temperature B1S3" is 400°C (752°F) or higher
    		B
    Except above
    		C
    HINT:
    If the exhaust gas temperature sensor is normal, the exhaust gas temperature drops when the vehicle is left as is for 1 to 2 hours with the engine stopped. If the exhaust gas temperature does not drop, the exhaust gas temperature sensor may be malfunctioning.


A
Go to step 7

B
Go to step 8
C


3.READ VALUE USING INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE)

  1. Allow the engine to soak for 1 to 2 hours.

    HINT:
    1. It is not necessary to allow the engine to soak if the engine is cold.
    2. The engine cools faster if the hood is opened.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant temp.

  1. Read the value.

    OK:
    The difference between the displayed value and outside air temperature is below 5°C (9°F).
    NOTICE:
    If the difference between "Coolant Temp" and the outside air temperature is 5°C (9°F) or higher, the heat from the engine affects the intake air temperature sensor, causing an incorrect value to be displayed. In this case, allow the engine to soak again.


OK
Go to step 6

NG
Go to step 4

4.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

  1. Inspect the engine coolant temperature sensor (HILUX_TGN26 RM0000013Z8017X.html).



OK
Go to step 6

NG
Go to step 5

5.REPLACE ENGINE COOLANT TEMPERATURE SENSOR

  1. Replace the engine coolant temperature sensor (HILUX_TGN26 RM0000013ZA018X.html).



NEXT
Go to step 9

6.REPLACE ECM

  1. Replace the ECM (HILUX_TGN26 RM0000013Z001IX.html).



NEXT
Go to step 9

7.REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S2

  1. Replace the exhaust gas temperature sensor B1S2 (HILUX_TGN26 RM000003TEF00QX.html).



NEXT
Go to step 9

8.REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S3

  1. Replace the exhaust gas temperature sensor B1S3 (HILUX_TGN26 RM000003TEF00QX.html).


NEXT


9.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Leave the vehicle as is for 1 to 2 hours with the engine stopped.

    HINT:
    1. It is not necessary to allow the engine to soak if the engine is cold.
    2. The engine cools faster if the hood is opened.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Exhaust Temperature B1S2, Exhaust Temperature B1S3 and Intake Air.

  1. Read the value.

    OK:
    The values of "Exhaust Temperature B1S2" and "Exhaust Temperature B1S3" are both approximately the same as "Intake Air".

NEXT

END