Toyota Corolla Cross: Drive Motor "B" Temperature Sensor Circuit Short to Ground (P0A3011,P0A3015)
DTC SUMMARY
MALFUNCTION DESCRIPTION
These DTCs are stored when the rear motor temperature sensor output is abnormal. The cause of this malfunction may be one of the following:
Hybrid vehicle control ECU malfunction- Hybrid vehicle control ECU internal malfunction
- Internal rear motor temperature sensor malfunction
- Open or short in rear motor temperature sensor
- 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 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 (MGR) becomes high. If the self-protection function does not operate, the rear motor (MGR) may malfunction and cause the vehicle to enter fail-safe mode.
DESCRIPTION
The resistance of the thermistor built into the rear motor temperature sensor changes in accordance with changes in the rear motor temperature. The lower the rear motor temperature, the higher the thermistor resistance. Conversely, the higher the rear motor temperature, the lower the resistance.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P0A3011 | Drive Motor "B" Temperature Sensor Circuit Short to Ground |
Short to ground in the rear motor temperature sensor circuit (1 trip detection logic) |
| Does not come on |
Master Warning: Comes on |
SAE Code: P0A32 |
|
P0A3015 | Drive Motor "B" Temperature Sensor Circuit Short to Battery or Open |
Open or short to +B in the rear motor temperature sensor circuit (1 trip detection logic) |
| Does not come on |
Master Warning: Comes on |
SAE Code: P0A33 |
HINT:
After confirming that DTC P0A3011 or P0A3015 is output, use the GTS to check "Rear 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 here .gif)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
- With the ignition switch ON and wait for 5 seconds or more.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
- 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.
WIRING DIAGRAM
PROCEDURE
|
1. | CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
| (a) Check the connection condition of the hybrid vehicle control ECU connectors and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter. Click here OK: - The connector is connected securely. - The terminals are not deformed and are connected securely. - No water or foreign matter in the connector. Result:
|
|
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| B | .gif) | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. | CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR) |
(a) Check the connection condition of the rear motor temperature sensor connector (floor wire connector) and the contact pressure of each terminal. Check the terminal for deformation, and check the connector for water ingress and foreign matter.
Click here
OK:
- The connector is connected securely.
- The terminals are not deformed and are connected securely.
- No water or foreign matter in the connectors.
|
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 |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. | CHECK CONNECTOR CONNECTION CONDITION (NO. 3 FLOOR WIRE CONNECTOR) |
(a) Check the connection condition of the rear motor temperature sensor connector (No. 3 floor wire connector) and the contact pressure of each terminal. Check the terminal for deformation, and check the connector for water ingress and foreign matter.
Click here
OK:
- The connector is connected securely.
- The terminals are not deformed and are connected securely.
- No water or foreign matter in the connectors.
|
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 |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. | CHECK CONNECTOR CONNECTION CONDITION (NO. 6 FLOOR WIRE CONNECTOR) |
(a) Check the connection condition of the rear motor temperature sensor connector (No. 6 floor 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 here
OK:
- The connector is connected securely.
- The terminals are not deformed and are connected securely.
- No water or foreign matter in the connector.
|
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 |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. | READ VALUE USING GTS (REAR MOTOR TEMPERATURE) |
(a) Read the Data List.
Powertrain > Hybrid Control > Data List|
Tester Display |
|---|
|
Rear Motor Temperature |
| Result |
Proceed to |
|---|---|
| -40°C (-40°F) |
A |
| 215°C (419°F) |
B |
| Same as actual temperature |
C |
(b) Turn the ignition switch off.
| B | | GO TO STEP 10 |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. | READ VALUE USING GTS (CHECK WIRE HARNESS OPEN CIRCUIT) |
(a) Disconnect the No. 6 floor wire connector.
| (b) Connect terminals 1 (RMT) and 7 (RMTG) of the QR1 No. 6 floor wire connector (hybrid vehicle control ECU side). |
|
(c) Read the Data List.
Powertrain > Hybrid Control > Data List|
Tester Display |
|---|
|
Rear Motor Temperature |
OK:
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
Rear Motor Temperature |
Terminals QR1-1 (RMT) and QR1-7 (RMTG) connected Ignition switch ON |
215°C (419°F) |
(d) Turn the ignition switch off.
(e) Reconnect the No. 6 floor wire connector.
| NG | | GO TO STEP 9 |
|
|
7. | CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR TEMPERATURE SENSOR CONNECTOR) |
| (a) 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 here OK: - The connector is connected securely. - The terminals are not deformed and are connected securely. - No water or foreign matter in the connector. |
|
|
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 |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
(a) Disconnect the rear motor temperature sensor connector.
| (b) Measure the resistance according to the value(s) in the table below. OK:
|
|
(c) Connect the rear motor temperature sensor connector.
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - NO. 6 FLOOR WIRE) |
| NG | | REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY |
|
9. | CHECK HYBRID VEHICLE CONTROL ECU |
(a) Connect terminals 48 (RMT) and 47 (RMTG) of the hybrid vehicle control ECU connector.
|
*a | Component with harness connected (Hybrid Vehicle Control ECU) |
- | - |
(b) Read the Data List.
Powertrain > Hybrid Control > Data List|
Tester Display |
|---|
|
Rear Motor Temperature |
OK:
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
Rear Motor Temperature |
Terminals I249-48 (RMT) and I249-47 (RMTG) connected Ignition switch ON |
215°C (419°F) |
(c) Turn the ignition switch off.
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 6 FLOOR WIRE - HYBRID VEHICLE CONTROL ECU) |
| NG | | REPLACE HYBRID VEHICLE CONTROL ECU |
|
10. | READ VALUE USING GTS (CHECK WIRE HARNESS SHORT CIRCUIT) |
(a) Disconnect the No. 6 floor wire connector.
(b) Read the Data List.
Powertrain > Hybrid Control > Data List|
Tester Display |
|---|
|
Rear Motor Temperature |
OK:
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
Rear Motor Temperature |
Ignition switch ON |
-40°C |
(c) Turn the ignition switch off.
(d) Reconnect the No. 6 floor wire connector.
| NG | | GO TO STEP 13 |
|
|
11. | CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR TEMPERATURE SENSOR CONNECTOR) |
| (a) 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 here OK: - The connector is connected securely. - The terminals are not deformed and are connected securely. - No water or foreign matter in the connector. |
|
|
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 |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
12. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
(a) Disconnect the rear motor temperature sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
OK:
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
R20-1 (RMTG) - R20-2 (RMT) |
Ignition switch off |
0.3 to 1500 kΩ |
| (c) Connect the rear motor temperature sensor connector. |
|
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - NO. 6 FLOOR WIRE) |
| NG | | REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY |
|
13. | CHECK HARNESS AND CONNECTOR (NO. 6 FLOOR WIRE - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the No. 6 floor wire connector.
(b) Disconnect the hybrid vehicle control ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
QR1-7 (RMTG) - I249-47 (RMTG) |
Ignition switch off |
Below 1 Ω |
|
QR1-1 (RMT) - I249-48 (RMT) |
Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
| Tester Display |
Condition | Specified Condition |
|---|---|---|
|
QR1-7 (RMTG) or I249-47 (RMTG) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
|
QR1-1 (RMT) or I249-48 (RMT) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Connect the hybrid vehicle control ECU connector.
(e) Connect the No. 6 floor wire connector.
| OK | | REPLACE HYBRID VEHICLE CONTROL ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 6 FLOOR WIRE - HYBRID VEHICLE CONTROL ECU) |
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