RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604233 MOTOR GENERATOR CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  MOTOR GENERATOR CONTROL SYSTEM  P0A3611  Generator Temperature Sensor Circuit Short to Ground  P0A3615  Generator Temperature Sensor Circuit Short to Auxiliary Battery or Open  


DTC SUMMARY

MALFUNCTION DESCRIPTION


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

Motor generator control ECU (MG ECU) malfunction
·

Motor generator control ECU (MG ECU) internal malfunction


Generator temperature sensor malfunction
·

Internal generator temperature sensor malfunction

·

Open or short in generator temperature sensor


Wire harness between the generator 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


HINT:

If any of these DTCs are stored, the generator temperature sensor is malfunctioning and the self-protection function may not operate. Therefore under certain high load driving condition, the temperature of the generator (MG1) becomes high. If the self-protection function does not operate, the generator (MG1) 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 generator temperature sensor changes in accordance with changes in generator (MG1) temperature. The lower the generator (MG1) temperature, the higher the thermistor resistance. Conversely, the higher the generator (MG1) temperature, the lower the resistance.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0A3611 Generator Temperature Sensor Circuit Short to Ground Short to ground in the generator temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Inverter with converter assembly

·

Generator temperature sensor (Hybrid vehicle transaxle assembly)


Comes on Master Warning:
Comes on 		SAE Code:
P0A38
P0A3615 Generator Temperature Sensor Circuit Short to Auxiliary Battery or Open Open or short to +B in the generator temperature sensor circuit
(1 trip detection logic)
·

Wire harness or connector

·

Inverter with converter assembly

·

Generator temperature sensor (Hybrid vehicle transaxle assembly)


Comes on Master Warning:
Comes on 		SAE Code:
P0A39

HINT:

After confirming that DTC P0A3611 or P0A3615 is output, use the GTS to check "Generator 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


MONITOR DESCRIPTION

If the motor generator control ECU detects a malfunction of the generator temperature sensor, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs P0A38 (INF P0A3611): Generator Temperature Sensor Circuit Low
P0A39 (INF P0A3615): Generator Temperature Sensor Circuit High
Required sensors/components Generator temperature sensor
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation 1 driving cycle
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Motor generator control ECU DTC P0A38 (INF P0A3611) is not detected
DTC P0A39 (INF P0A3615) is not detected

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>MOTOR GENERATOR CONTROL SYSTEM>UTILITY

·

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

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>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

A512982E30
2.51,1.302 2.969,1.5 0.458,0.198 10 false 4 1.99,2.042 2.75,2.365 0.76,0.323 10 false GMTG 2.083,1.302 2.844,1.625 0.76,0.323 10 false GMT 2.51,2.031 2.969,2.229 0.458,0.198 10 false 3 0.802,2.792 1.563,3.115 0.76,0.323 10 false C143 0.792,2.969 3.156,3.396 2.365,0.427 10 false Generator Temperature Sensor (Hybrid Vehicle Transaxle Assembly) 4.281,1.302 5.042,1.625 0.76,0.323 10 false 20 4.51,1.302 5.271,1.625 0.76,0.323 10 false GMT 4.271,2.052 5.031,2.375 0.76,0.323 10 false 14 4.521,2.052 5.281,2.375 0.76,0.323 10 false GMTG 4.5,2.813 5.26,3.135 0.76,0.323 10 false C142 4.5,2.979 6.802,3.354 2.302,0.375 10 false Inverter with Converter Assembly 5.604,1.417 6.365,1.74 0.76,0.323 10 false ADC

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>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>MOTOR GENERATOR CONTROL SYSTEM>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 (GENERATOR TEMPERATURE SENSOR CONNECTOR)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK CONNECTOR CONNECTION CONDITION (GENERATOR TEMPERATURE SENSOR CONNECTOR)
a.
A517714

Check the connection condition of the generator 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 (GENERATOR TEMPERATURE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.READ VALUE USING GTS (GENERATOR TEMPERATURE)
a.

Read the Data List.

Powertrain > Motor Generator > Data List
Tester Display
Generator Temperature
50003 395 277
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 (GENERATOR TEMPERATURE SENSOR)

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the generator temperature sensor connector.


b.
A512985C24
0.375,0.927 0.771,1.188 0.396,0.26 1.125,1.75 1.406,1.198 true 1.708,1.75 1.615,1.177 true 0.313,0.25 0.625,0.448 0.313,0.198 10 false *a 0.969,1.781 1.396,2.01 0.427,0.229 10 false GMT 1.542,1.771 1.969,2 0.427,0.229 10 false GMTG 0.406,0.979 0.833,1.208 0.427,0.229 10 false C143
*a Component without harness connected
(Generator 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
C143-4 (GMT) - C143-3 (GMTG) Ignition switch off 0.3 to 2000 kΩ



c.

Reconnect the generator temperature sensor connector.


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY

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


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

Disconnect the generator 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
C143-4 (GMT) - C142-20 (GMT) Ignition switch off Below 1 Ω
C143-3 (GMTG) - C142-14 (GMTG) Ignition switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
C143-4 (GMT) or C142-20 (GMT) - Body ground and other terminals Ignition switch off 10 kΩ or higher
C143-3 (GMTG) or C142-14 (GMTG) - Body ground and other terminals Ignition switch off 10 kΩ or higher



d.

Reconnect the inverter with converter assembly connector.


e.

Reconnect the generator temperature sensor connector.


Result:
Proceed to
OK
NG



OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>INVERTER WITH CONVERTER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR