RM36D0EC _51 Engine / Hybrid System _083048 HYBRID / BATTERY CONTROL _0709511 HYBRID CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P0A2A11  Drive Motor "A" Temperature Sensor Circuit Short to Ground  P0A2A15  Drive Motor "A" Temperature Sensor Circuit Short to Auxiliary Battery or Open  


DTC SUMMARY

MALFUNCTION DESCRIPTION


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

Hybrid vehicle control ECU assembly malfunction
·

Hybrid vehicle control ECU assembly internal malfunction


Motor temperature sensor malfunction
·

Internal motor temperature sensor malfunction

·

Open or short in motor temperature sensor


Wire harness between the motor temperature sensor and hybrid vehicle control ECU assembly
·

The connectors are not connected properly

·

Foreign matter or water on the connector terminals

·

Open or short in wire harness


HINT:

If any of these DTCs are stored, the motor temperature sensor is malfunctioning and the self-protection function may not operate. Therefore under certain high load driving condition, the temperature of the motor (MG2) becomes high. If the self-protection function does not operate, the motor (MG2) may malfunction and cause the vehicle to enter fail-safe mode.



DESCRIPTION

C189867E17
0.76,2.104 0.885,2.302 0.125,0.198 10 false 0 2,2.875 3.406,3.094 1.406,0.219 10 false Temperature (°C (°F)) 0.885,2.375 1.083,2.573 0.198,0.198 10 false 10 1.26,2.375 1.458,2.573 0.198,0.198 10 false 15 2.406,2.375 2.604,2.573 0.198,0.198 10 false 30 2.792,2.375 2.99,2.573 0.198,0.198 10 false 35 1.646,2.375 1.844,2.573 0.198,0.198 10 false 20 2.021,2.375 2.219,2.573 0.198,0.198 10 false 25 0.677,1.521 0.875,1.719 0.198,0.198 10 false 50 0.594,0.948 0.865,1.146 0.271,0.198 10 false 100 3.146,2.375 3.344,2.573 0.198,0.198 10 false 40 0.063,0.5 1.26,0.771 1.198,0.271 10 false Resistance (kΩ) 0.865,2.542 1.208,2.74 0.344,0.198 10 false (50) 1.229,2.552 1.573,2.75 0.344,0.198 10 false (59) 1.615,2.552 1.958,2.75 0.344,0.198 10 false (68) 1.979,2.563 2.323,2.76 0.344,0.198 10 false (77) 2.385,2.573 2.729,2.771 0.344,0.198 10 false (86) 2.771,2.583 3.115,2.781 0.344,0.198 10 false (95) 3.063,2.583 3.406,2.781 0.344,0.198 10 false (104)

The resistance of the thermistor built into the motor temperature sensor changes in accordance with changes in the motor (MG2) temperature. The lower the motor (MG2) temperature, the higher the thermistor resistance. Conversely, the higher the motor (MG2) temperature, the lower the resistance.

HINT:

The term "drive motor A" indicates the motor (MG2).


DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0A2A11 Drive Motor "A" Temperature Sensor Circuit Short to Ground Short to ground in the motor temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Hybrid vehicle control ECU assembly

·

Motor temperature sensor (Hybrid vehicle transaxle assembly)


Comes on Master Warning:
Comes on 		SAE Code:
P0A2C
P0A2A15 Drive Motor "A" Temperature Sensor Circuit Short to Auxiliary Battery or Open Open or short to +B in the motor temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Hybrid vehicle control ECU assembly

·

Motor temperature sensor (Hybrid vehicle transaxle assembly)


Comes on Master Warning:
Comes on 		SAE Code:
P0A2D

Related Data List
DTC No. Data List
P0A2A11 Motor Temperature
P0A2A15

HINT:

After confirming that DTC P0A2A11 or P0A2A15 is output, use the GTS to check "Motor 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>HYBRID CONTROL SYSTEM>UTILITY

·

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

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the power switch on (IG) and turn the GTS on.

3.

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

4.

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

5.

Turn the power switch on (IG) and turn the GTS on.

6.

With power switch on (IG) 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 / Hybrid Control / 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

A416702E53
2.313,1.188 2.771,1.385 0.458,0.198 10 false 1 1.802,1.938 2.563,2.26 0.76,0.323 10 false MMTG 1.906,1.188 2.667,1.51 0.76,0.323 10 false MMT 2.302,1.938 2.76,2.135 0.458,0.198 10 false 2 0.292,2.677 1.052,3 0.76,0.323 10 false C50 0.302,2.844 2.417,3.531 2.115,0.688 10 false Motor Temperature Sensor (Hybrid Vehicle Transaxle Assembly) 2.552,2.667 4.573,3.198 2.021,0.531 10 false No. 1 Engine Room Relay Block and Junction Block Assembly Connector 2.563,2.521 3.323,2.844 0.76,0.323 10 false CA3 3.042,1.177 3.802,1.5 0.76,0.323 10 false 11 3.031,1.938 3.792,2.26 0.76,0.323 10 false 23 3.688,1.938 4.448,2.26 0.76,0.323 10 false 23 3.698,1.177 4.458,1.5 0.76,0.323 10 false 11 4.615,1.146 5.375,1.469 0.76,0.323 10 false 43 4.885,1.146 5.646,1.469 0.76,0.323 10 false MMT 4.615,1.896 5.375,2.219 0.76,0.323 10 false 44 4.875,1.896 5.635,2.219 0.76,0.323 10 false MMTG 4.948,2.688 5.708,3.01 0.76,0.323 10 false A31 4.938,2.833 6.646,3.51 1.708,0.677 10 false Hybrid Vehicle Control ECU Assembly 5.958,1.302 6.719,1.625 0.76,0.323 10 false ADC

PROCEDURE

1.CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)
a.
A572936

Check the connection condition of the hybrid vehicle control ECU assembly connectors 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

2.CHECK CONNECTOR CONNECTION CONDITION (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY CA3 CONNECTOR)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK CONNECTOR CONNECTION CONDITION (NO. 1 ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY CA3 CONNECTOR)
a.
C423505

Check the connection condition of the No. 1 engine room relay block and junction block assembly CA3 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 connectors.



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.CHECK CONNECTOR CONNECTION CONDITION (MOTOR TEMPERATURE SENSOR CONNECTOR)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK CONNECTOR CONNECTION CONDITION (MOTOR TEMPERATURE SENSOR CONNECTOR)
a.
C412473

Check the connection condition of the motor 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

4.READ VALUE USING GTS (MOTOR TEMPERATURE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.READ VALUE USING GTS (MOTOR TEMPERATURE)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temperature.


d.

Read the Data List.

Powertrain > Hybrid Control > Data List
Tester Display
Motor Temperature
50003 397 66
Result:
Result Proceed to
-40°C (-40°F) A
215°C (419°F) B
Same as actual temperature C



e.

Turn the power switch off.



A

5.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR TEMPERATURE SENSOR)

B

7.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR TEMPERATURE SENSOR)

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR TEMPERATURE SENSOR)
a.
C412473E01
1.969,0.427 2.406,0.646 0.438,0.219 1.99,0.427 2.375,0.625 0.385,0.198 10 true C50

Disconnect the C50 motor temperature sensor connector.


b.
A385118C38
1.885,1.781 1.885,1.333 true 2.396,1.802 2.083,1.333 true 0.219,0.177 0.531,0.375 0.313,0.198 10 false *a 2.313,1.833 2.74,2.063 0.427,0.229 10 false MMT 1.688,1.844 2.385,2.115 0.698,0.271 10 false MMTG
*a Component without harness connected
(Motor 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
1 (MMT) - 2 (MMTG) Power switch off 0.3443 to 1446 kΩ



c.

Reconnect the C50 motor temperature sensor connector.


Result:
Proceed to
OK
NG



OK

6.INSPECT HYBRID VEHICLE CONTROL ECU ASSEMBLY

NG

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY

Click hereDrivetrain>P710 (HYBRID TRANSMISSION / TRANSAXLE)>HYBRID VEHICLE TRANSAXLE>REMOVAL


6.INSPECT HYBRID VEHICLE CONTROL ECU ASSEMBLY
a.

Connect terminals 43 (MMT) and 44 (MMTG) of the A31 hybrid vehicle control ECU assembly connector.

A493797C49
2.583,0.333 2.927,0.583 0.344,0.25 2.479,1.656 2.167,2.438 true 2.604,1.625 2.75,2.406 true 0.104,0.115 0.417,0.313 0.313,0.198 10 false *a 2.635,0.375 3.094,0.573 0.458,0.198 10 false A31 1.969,2.469 2.458,2.719 0.49,0.25 10 false MMTG 2.625,2.469 3.24,2.667 0.615,0.198 10 false MMT
*a Component with harness connected
(Hybrid Vehicle Control ECU Assembly) 		- -



b.

Connect the GTS to the DLC3.


c.

Turn the power switch on (IG).


d.

Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temperature.


e.

Read the Data List.

Powertrain > Hybrid Control > Data List
Tester Display
Motor Temperature
50003 397 66
OK:
Tester Display Condition Specified Condition
Motor Temperature Terminals A31-43 (MMT) and A31-44 (MMTG) connected
Power switch on (IG) 		215°C (419°F)



Result:
Proceed to
OK
NG


f.

Turn the power switch off.



OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

NG

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


7.INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR TEMPERATURE SENSOR)
a.
C412473E01
1.969,0.427 2.406,0.646 0.438,0.219 1.99,0.427 2.375,0.625 0.385,0.198 10 true C50

Disconnect the C50 motor temperature sensor connector.


b.
A385118C38
1.885,1.781 1.885,1.333 true 2.396,1.802 2.083,1.333 true 0.219,0.177 0.531,0.375 0.313,0.198 10 false *a 2.313,1.833 2.74,2.063 0.427,0.229 10 false MMT 1.688,1.844 2.385,2.115 0.698,0.271 10 false MMTG
*a Component without harness connected
(Motor 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
1 (MMT) - 2 (MMTG) Power switch off 0.3443 to 1446 kΩ



c.

Reconnect the C50 motor temperature sensor connector.


Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - HYBRID VEHICLE CONTROL ECU ASSEMBLY)

NG

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY

Click hereDrivetrain>P710 (HYBRID TRANSMISSION / TRANSAXLE)>HYBRID VEHICLE TRANSAXLE>REMOVAL


8.CHECK HARNESS AND CONNECTOR (MOTOR TEMPERATURE SENSOR - HYBRID VEHICLE CONTROL ECU ASSEMBLY)
a.

Disconnect the C50 motor temperature sensor connector.


b.

Disconnect the A31 hybrid vehicle control ECU assembly connector.


c.
A556744C03
1.521,0.229 1.854,0.479 0.333,0.25 1.531,2.156 1.917,2.417 0.385,0.26 1.688,1.615 1.563,1.135 true 1.219,1.615 1.406,1.135 true 1.969,4.156 1.927,3.635 true 2.438,4.115 2.083,3.646 true 0.156,0.115 0.469,0.313 0.313,0.198 10 false *a 0.208,2.219 0.521,2.417 0.313,0.198 10 false *b 1.563,0.281 1.875,0.479 0.313,0.198 10 false C50 1.604,2.219 1.917,2.417 0.313,0.198 10 false A31 1.021,1.656 1.479,1.885 0.458,0.229 10 false MMT 1.531,1.656 1.99,1.885 0.458,0.229 10 false MMTG 1.833,4.188 2.292,4.417 0.458,0.229 10 false MMT 2.375,4.167 2.833,4.396 0.458,0.229 10 false MMTG
*a Front view of wire harness connector
(to Motor Temperature Sensor)
*b Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)


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

Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
C50-1 (MMT) - A31-43 (MMT) Power switch off Below 1 Ω
C50-2 (MMTG) - A31-44 (MMTG) Power switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
C50-1 (MMT) or A31-43 (MMT) - Body ground and other terminals Power switch off 10 kΩ or higher
C50-2 (MMTG) or A31-44 (MMTG) - Body ground and other terminals Power switch off 10 kΩ or higher



d.

Reconnect the A31 hybrid vehicle control ECU assembly connector.


e.

Reconnect the C50 motor temperature sensor connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR