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

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P0A302A  Drive Motor "B" Temperature Sensor Signal Stuck In Range  


DTC SUMMARY

MALFUNCTION DESCRIPTION


This DTC is stored when the rear motor temperature sensor output is abnormal.

The cause of this DTC output may be the following:

Rear motor temperature sensor malfunction
·

Rear motor temperature sensor internal malfunction


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

The connectors are not connected properly


Foreign matter or water on the connector terminals

HINT:

When this DTC is stored, the rear motor temperature sensor is malfunctioning and the self-protection function may not operate. Therefore under certain high load driving condition, the temperature of the rear motor becomes high. If the self-protection function does not operate, the rear motor may malfunction and cause the vehicle to enter fail-safe mode.



DESCRIPTION

Refer to the wiring diagram for DTC P0A3011.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P0A3011

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0A302A Drive Motor "B" Temperature Sensor Signal Stuck In Range The difference between the maximum and minimum output temperatures of the rear traction motor is less than the stuck malfunction judgment deviation.
(1 trip detection logic) 		Rear traction motor with transaxle assembly(Rear motor temperature sensor) Does not come on Master Warning:
Comes on 		SAE Code:
P0A31

Related Data List
DTC No. Data List
P0A302A Rear Motor Temperature

CONFIRMATION DRIVING PATTERN

HINT:

After repairs have been completed, clear the DTCs 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


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.

Drive the vehicle at approximately 10 km/h (6 mph) or less for approximately 60 seconds or more while maintaining the vehicle speed.

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 driving pattern again.




PROCEDURE

1.CHECK DTC OUTPUT (HYBRID CONTROL)
a.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes
50001 397
Result:
Result Proceed to
No DTCs are output, or DTCs except the ones in the table below are also output. A
Any of the following DTCs are also output. B


Relevant DTC
P0A3011 Drive Motor "B" Temperature Sensor Circuit Short to Ground
P0A3015 Drive Motor "B" Temperature Sensor Circuit Short to Battery or Open


b.

Turn the power switch off.



A

2.CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID 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

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

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the A30 hybrid vehicle control ECU assembly connector.


b.
A556736C18
1.5,0.146 1.938,0.365 0.438,0.219 2.646,1.531 2.031,1.833 true 2.792,1.521 2.833,1.802 true 0.125,0.104 0.438,0.26 0.313,0.156 10 false *a 1.594,0.177 1.969,0.385 0.375,0.208 10 false A30 1.917,1.896 2.417,2.083 0.5,0.188 10 false RMTG 2.792,1.865 3.292,2.052 0.5,0.188 10 false RMT
*a 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:
Tester Connection Condition Specified Condition
A30-54 (RMT) - A30-53 (RMTG) Power switch off 0.3443 to 1446 kΩ



c.

Reconnect the A30 hybrid vehicle control ECU assembly connector.


Result:
Proceed to
OK
NG



OK

4.CHECK CONNECTOR CONNECTION CONDITION (NO. 2 FLOOR WIRE CONNECTOR)

NG

10.INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR)
4.CHECK CONNECTOR CONNECTION CONDITION (NO. 2 FLOOR WIRE CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P0A3011

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

5.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - NO. 2 FLOOR WIRE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - NO. 2 FLOOR WIRE)
a.
C414303N01
0.604,0.25 1.073,0.667 0.469,0.417 0.583,0.969 1.052,1.385 0.469,0.417 0.708,0.365 1.01,0.542 0.302,0.177 10 true AN3 0.698,1.083 1,1.26 0.302,0.177 10 true AN1

Disconnect the AN3 and AN1 No. 2 floor wire connector.


b.

Disconnect the A30 hybrid vehicle control ECU assembly connector.


c.

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

HINT:

When performing the measurement, lightly jiggle the wire harness up and down and left and right and confirm that the resistance does not fluctuate.


Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
AN3-3 (RMT) - A30-54 (RMT) Power switch off Below 1 Ω
AN1-15 (RMTG) - A30-53 (RMTG) Power switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
AN3-3 (RMT) or A30-54 (RMT) - Body ground and other terminals Power switch off 10 kΩ or higher
AN1-15 (RMTG) or A30-53 (RMTG) - Body ground and other terminals Power switch off 10 kΩ or higher



d.

Reconnect the A30 hybrid vehicle control ECU assembly connector.


e.

Reconnect the AN3 and AN1 No. 2 floor wire connector.


Result:
Proceed to
OK
NG



OK

6.CHECK CONNECTOR CONNECTION CONDITION (FRAME WIRE CONNECTOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK CONNECTOR CONNECTION CONDITION (FRAME WIRE CONNECTOR)
a.
C414268

Check the connection condition of the rear motor temperature sensor connector (frame wire 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

7.CHECK HARNESS AND CONNECTOR (FRAME WIRE - NO. 2 FLOOR WIRE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HARNESS AND CONNECTOR (FRAME WIRE - NO. 2 FLOOR WIRE)
a.
C414268N01
0.542,1.938 1.042,2.406 0.5,0.469 0.656,2.073 0.948,2.24 0.292,0.167 10 true ON1

Disconnect the ON1 frame wire connector.


b.
C414303N01
0.604,0.25 1.073,0.667 0.469,0.417 0.583,0.969 1.052,1.385 0.469,0.417 0.708,0.365 1.01,0.542 0.302,0.177 10 true AN3 0.698,1.083 1,1.26 0.302,0.177 10 true AN1

Disconnect the AN3 and AN1 No. 2 floor wire connector.


c.

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

HINT:

When performing the measurement, lightly jiggle the wire harness up and down and left and right and confirm that the resistance does not fluctuate.


Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
ON1-2 (RMT) - AN3-3 (RMT) Power switch off Below 1 Ω
ON1-1 (RMTG) - AN1-15 (RMTG) Power switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
ON1-2 (RMT) or AN3-3 (RMT) - Body ground and other terminals Power switch off 10 kΩ or higher
ON1-1 (RMTG) or AN1-15 (RMTG) - Body ground and other terminals Power switch off 10 kΩ or higher



d.

Reconnect the ON1 frame wire connector.


e.

Reconnect the AN3 and AN1 No. 2 floor wire connector.


Result:
Proceed to
OK
NG



OK

8.CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR TEMPERATURE SENSOR CONNECTOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR TEMPERATURE SENSOR CONNECTOR)
a.

Remove the rear suspension member sub-assembly.

Click hereSuspension>REAR SUSPENSION>REAR SUSPENSION MEMBER (for HV Model AWD)>REMOVAL


b.
C414304

Check the connection condition of the rear 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


c.

Install the rear suspension member sub-assembly.



A

9.CHECK HARNESS AND CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - FRAME WIRE)

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK HARNESS AND CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - FRAME WIRE)
a.

Disconnect the ON1 frame wire connector.


b.

Remove the rear suspension member sub-assembly.

Click hereSuspension>REAR SUSPENSION>REAR SUSPENSION MEMBER (for HV Model AWD)>REMOVAL


c.

Disconnect the O2 rear motor temperature sensor connector.


d.

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

Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
O2-2 (RMT) - ON1-2 (RMT) Power switch off Below 1 Ω
O2-1 (RMTG) - ON1-1 (RMTG) Power switch off Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
O2-2 (RMT) or ON1-2 (RMT) - Body ground and other terminals Power switch off 10 kΩ or higher
O2-1 (RMTG) or ON1-1 (RMTG) - Body ground and other terminals Power switch off 10 kΩ or higher



e.

Reconnect the O2 rear motor temperature sensor connector.


f.

Reinstall the rear suspension member sub-assembly.


g.

Reconnect the ON1 frame wire connector.


Result:
Proceed to
OK
NG



OK

REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY

Click hereDrivetrain>Q610 (HYBRID TRANSMISSION / TRANSAXLE)>REAR TRACTION MOTOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR)
a.
C414303N01
0.604,0.25 1.073,0.667 0.469,0.417 0.583,0.969 1.052,1.385 0.469,0.417 0.708,0.365 1.01,0.542 0.302,0.177 10 true AN3 0.698,1.083 1,1.26 0.302,0.177 10 true AN1

Disconnect the AN3 and AN1 No. 2 floor wire connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
AN3-3 (RMT) - AN1-15 (RMTG) Power switch off 0.3443 to 1446 kΩ



Result:
Proceed to
OK
NG


c.

Reconnect the AN3 and AN1 No. 2 floor wire connector.



OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 FLOOR WIRE - HYBRID VEHICLE CONTROL ECU ASSEMBLY)

NG

11.INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR)
11.INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P0A3011

Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - FRAME WIRE)

NG

REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY

Click hereDrivetrain>Q610 (HYBRID TRANSMISSION / TRANSAXLE)>REAR TRACTION MOTOR>REMOVAL