RM3660EC _51 Engine / Hybrid System _080773 HYBRID / BATTERY CONTROL _0600292 PA10 MOTOR GENERATOR CONTROL SYSTEM(for LITHIUM-ION BATTERY) C

HYBRID / BATTERY CONTROL  PA10 MOTOR GENERATOR CONTROL SYSTEM(for LITHIUM-ION BATTERY)  P274A11  Transmission Fluid Temperature Sensor "C" Circuit Short to Ground  P274A15  Transmission Fluid Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open  


DTC SUMMARY

MALFUNCTION DESCRIPTION


These DTCs are stored when the transmission fluid temperature sensor output is abnormal. The cause of this malfunction may be one of the following:

Motor generator control ECU (MG ECU) internal malfunction
·

Motor generator control ECU (MG ECU) malfunction


Transmission fluid temperature sensor malfunction
·

Internal transmission fluid temperature sensor malfunction

·

Open or short in transmission fluid temperature sensor


Wire harness between the transmission fluid temperature sensor and motor generator control ECU (MG ECU)
·

The connectors are not connected properly

·

Foreign matter or water on the connector terminals

·

Open or short in wire harness



DESCRIPTION

A380229E03
0.104,0.406 1.208,0.76 1.104,0.354 10 false Resistance (kΩ) 1.75,3.052 3.385,3.375 1.635,0.323 10 false Temperature (°C (°F)) 0.729,2.26 0.885,2.458 0.156,0.198 10 false 0 0.865,2.396 1.021,2.594 0.156,0.198 10 false 0 1.563,2.396 1.865,2.625 0.302,0.229 10 false 50 1.188,2.396 1.49,2.625 0.302,0.229 10 false 25 1.938,2.396 2.24,2.625 0.302,0.229 10 false 75 2.271,2.396 2.573,2.625 0.302,0.229 10 false 100 2.635,2.396 2.938,2.625 0.302,0.229 10 false 125 3.01,2.396 3.313,2.625 0.302,0.229 10 false 150 0.719,2.031 1.021,2.26 0.302,0.229 10 false 5 0.688,1.781 0.99,2.01 0.302,0.229 10 false 10 0.677,1.563 0.979,1.792 0.302,0.229 10 false 15 0.688,1.333 0.99,1.563 0.302,0.229 10 false 20 0.688,1.115 0.99,1.344 0.302,0.229 10 false 25 0.688,0.885 0.99,1.115 0.302,0.229 10 false 30 1.167,2.635 1.479,2.906 0.313,0.271 10 false (77) 0.813,2.625 1.125,2.896 0.313,0.271 10 false (32) 1.5,2.646 1.875,2.927 0.375,0.281 10 false (122) 1.885,2.656 2.292,2.927 0.406,0.271 10 false (167) 2.26,2.656 2.667,2.927 0.406,0.271 10 false (212) 2.635,2.656 3.031,2.938 0.396,0.281 10 false (257) 3.021,2.656 3.417,2.99 0.396,0.333 10 false (302)

The resistance of the thermistor built into the transmission fluid temperature sensor changes in accordance with changes in the transmission fluid temperature. The lower the transmission fluid temperature, the higher the thermistor resistance. Conversely, the higher the transmission fluid temperature, the lower the resistance.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P274A11 Transmission Fluid Temperature Sensor "C" Circuit Short to Ground Short to ground in the transmission fluid temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Inverter with converter assembly

·

Hybrid vehicle transaxle assembly (Transmission fluid temperature sensor)


Comes on Master Warning:
Comes on 		SAE Code:
P274C
P274A15 Transmission Fluid Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open Open or short to +B in the transmission fluid temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Inverter with converter assembly

·

Hybrid vehicle transaxle assembly (Transmission fluid temperature sensor)


Comes on Master Warning:
Comes on 		SAE Code:
P274D

HINT:

After confirming that DTC P274A11 or P274A15 is output, use the GTS to check "Transaxle Oil Temperature" in the Data List.

Displayed Temperature Malfunction
-40°C (-40°F) Open circuit or short to +B
215°C (419°F) Short to ground


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>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>UTILITY

·

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

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

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

4.

Turn the ignition switch off and wait for 2 minutes or more.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

With ignition switch ON and wait for 5 seconds or more. [*1]

HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.


7.

Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

8.

Check the DTC judgment result.

HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.




WIRING DIAGRAM

A512982E28
2.146,1.313 3.063,1.51 0.917,0.198 10 false TTA 2.042,2.063 2.958,2.26 0.917,0.198 10 false TTAG 0.729,2.938 3.167,3.406 2.438,0.469 10 false Transmission Fluid Temperature Sensor (Hybrid Vehicle Transaxle Assembly) 0.74,2.781 1.333,2.979 0.594,0.198 10 false C92 2.5,1.313 3.094,1.51 0.594,0.198 10 false 3 2.479,2.063 3.073,2.26 0.594,0.198 10 false 13 4.281,1.302 4.875,1.5 0.594,0.198 10 false 17 4.281,2.063 4.875,2.26 0.594,0.198 10 false 11 4.521,1.302 5.115,1.5 0.594,0.198 10 false TTA 4.521,2.063 5.115,2.26 0.594,0.198 10 false TTAG 5.625,1.427 6.219,1.625 0.594,0.198 10 false ADC 4.49,2.823 5.083,3.021 0.594,0.198 10 false C158 4.49,2.99 7.083,3.354 2.594,0.365 10 false Inverter with Converter Assembly

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY)>PRECAUTION


NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the auxiliary battery.

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




PROCEDURE

1.CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY)>P0A2A11

Result:
Result Proceed to
OK A
NG (The connector is not connected securely.) B
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C



A

2.CHECK CONNECTOR CONNECTION CONDITION (TRANSMISSION FLUID TEMPERATURE SENSOR CONNECTOR)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK CONNECTOR CONNECTION CONDITION (TRANSMISSION FLUID TEMPERATURE SENSOR CONNECTOR)
a.
A517713

Check the connection condition of the transmission fluid temperature sensor connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>ELECTRONIC CIRCUIT INSPECTION PROCEDURE

OK:

- The connector is connected securely.

- The terminals are not deformed and are connected securely.

- No water or foreign matter in the connector.



Result:
Result Proceed to
OK A
NG (The connector is not connected securely.) B
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C



A

3.READ VALUE USING GTS (TRANSAXLE OIL TEMPERATURE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.READ VALUE USING GTS (TRANSAXLE OIL TEMPERATURE)
a.

Read the Data List.

Powertrain > Motor Generator > Data List
Tester Display
Transaxle Oil Temperature
50003 395 285
Result:
Result Proceed to
-40°C (-40°F) A
Same as actual temperature B



b.

Turn the ignition switch off.



A

4.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (TRANSMISSION FLUID TEMPERATURE SENSOR)

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (TRANSMISSION FLUID TEMPERATURE SENSOR)
a.

Disconnect the transmission fluid temperature sensor connector.


b.
A467890C07
0.25,1.125 0.688,1.417 0.438,0.292 2.219,1.865 1.844,1.094 true 1.594,1.438 1.24,1.875 true 0.135,0.083 0.448,0.281 0.313,0.198 10 false *a 2.135,1.896 2.594,2.094 0.458,0.198 10 false TTA 1.021,1.906 1.479,2.104 0.458,0.198 10 false TTAG 0.313,1.177 0.75,1.417 0.438,0.24 10 false C92
*a Component without harness connected
(Transmission Fluid Temperature Sensor (Hybrid Vehicle Transaxle Assembly))


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

Standard Resistance:
Tester Connection Condition Specified Condition
C92-3 (TTA) - C92-13 (TTAG) Ignition switch off 1.3 to 94 kΩ



c.

Reconnect the transmission fluid temperature sensor connector.


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (TRANSMISSION FLUID TEMPERATURE SENSOR - INVERTER WITH CONVERTER ASSEMBLY)

NG

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY

Click hereDrivetrain>PA10/PB10 (HYBRID TRANSMISSION / TRANSAXLE)>PA10 HYBRID VEHICLE TRANSAXLE>REMOVAL


5.CHECK HARNESS AND CONNECTOR (TRANSMISSION FLUID TEMPERATURE SENSOR - INVERTER WITH CONVERTER ASSEMBLY)
a.

Disconnect the transmission fluid temperature sensor connector.


b.

Disconnect the inverter with converter assembly connector.


c.

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

Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
C92-3 (TTA) - C158-17 (TTA) Ignition switch off Below 1 Ω
C92-13 (TTAG) - C158-11 (TTAG) Ignition switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
C92-3 (TTA) or C158-17 (TTA) - Body ground and other terminals Ignition switch off 10 kΩ or higher
C92-13 (TTAG) or C158-11 (TTAG) - Body ground and other terminals Ignition switch off 10 kΩ or higher



d.

Reconnect the inverter with converter assembly connector.


e.

Reconnect the transmission fluid temperature sensor connector.


Result:
Proceed to
OK
NG



OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>8ZR-FXE INVERTER WITH CONVERTER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR