Toyota Corolla Cross: Drive Motor "B" Temperature Sensor Signal Stuck In Range (P0A302A)
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
- 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 description for DTC P0A3011.
Click here
.gif)
|
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) |
| Does not come on |
Master Warning: Comes on |
SAE Code: P0A31 |
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 here
- 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.
- Drive the vehicle (stop and go driving) on urban roads for approximately 5 minutes. If the Data List item "Rear Motor Temperature" shows both increases and decreases in temperature, suspected areas indicated by this DTC are not malfunctioning.
- 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
Refer to the wiring diagram for DTC P0A3011.
Click here
PROCEDURE
|
1. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes|
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 ignition switch off.
| B | .gif) | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
|
.gif)
|
2. | CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
Click here
|
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 HARNESS AND CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the hybrid vehicle control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I249-48 (RMT) - I249-47 (RMTG) |
Ignition switch off |
0.3 to 1500 kΩ |
(c) Reconnect the hybrid vehicle control ECU connector.
| NG | | GO TO STEP 12 |
|
|
4. | CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR) |
Click here
|
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. | CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - FLOOR WIRE) |
(a) Disconnect the floor wire connector.
(b) Disconnect the hybrid vehicle control ECU 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 |
|---|---|---|
|
OI7-15 - I249-48 (RMT) |
Ignition switch off |
Below 1 Ω |
|
OI7-4 - I249-47 (RMTG) |
Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
OI7-15 or I249-48 (RMT) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
|
OI7-4 or I249-47 (RMTG) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Reconnect the hybrid vehicle control ECU connector.
(e) Reconnect the floor wire connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. | CHECK CONNECTOR CONNECTION CONDITION (NO. 3 FLOOR WIRE CONNECTOR) |
Click here
|
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 |
|
|
7. | CHECK HARNESS AND CONNECTOR (FLOOR WIRE - NO. 3 FLOOR WIRE) |
(a) Disconnect the floor wire connector.
(b) Disconnect the No. 3 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 |
|---|---|---|
|
OI7-15 - QO2-11 | Ignition switch off |
Below 1 Ω |
|
OI7-4 - QO2-22 | Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
OI7-15 - QO2-11 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
|
OI7-4 - QO2-22 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Reconnect the No. 3 floor wire connector.
(e) Reconnect the floor wire connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. | CHECK CONNECTOR CONNECTION CONDITION (NO. 6 FLOOR WIRE CONNECTOR) |
Click here
|
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 |
|
|
9. | CHECK HARNESS AND CONNECTOR (NO. 3 FLOOR WIRE - NO. 6 FLOOR WIRE) |
(a) Disconnect the No. 3 floor wire connector.
(b) Disconnect the No. 6 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 |
|---|---|---|
|
QO2-11 - QR1-1 | Ignition switch off |
Below 1 Ω |
|
QO2-22 - QR1-7 | Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
QO2-11 - QR1-1 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
|
QO2-22 - QR1-7 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Reconnect the No. 6 floor wire connector.
(e) Reconnect the No. 3 floor wire connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10. | CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR TEMPERATURE SENSOR CONNECTOR) |
Click here
|
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 |
|
|
11. | CHECK HARNESS AND CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - NO. 6 FLOOR WIRE) |
(a) Disconnect the No. 6 floor wire connector.
(b) Disconnect the rear motor temperature sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
R20-2 (RMT) - QR1-1 |
Ignition switch off |
Below 1 Ω |
|
R20-1 (RMTG) - QR1-7 |
Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
R20-2 (RMT) or QR1-1 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
|
R20-1 (RMTG) or QR1-7 - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Reconnect the rear motor temperature sensor connector.
(e) Reconnect the No. 6 floor wire connector.
| OK | | REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
12. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
(a) Disconnect the floor wire connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
OI7-15 - OI7-4 | Ignition switch off |
0.3 to 1500 kΩ |
(c) Reconnect the floor wire connector.
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (FLOOR WIRE - HYBRID VEHICLE CONTROL ECU) |
|
|
13. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
(a) Disconnect the No. 3 floor wire connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
QO2-11 - QO2-22 | Ignition switch off |
0.3 to 1500 kΩ |
(c) Reconnect the No. 3 floor wire connector.
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 3 FLOOR WIRE - FLOOR WIRE) |
|
|
14. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
(a) Disconnect the No. 6 floor wire connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
QR1-1 - QR1-7 | Ignition switch off |
0.3 to 1500 kΩ |
(c) Reconnect the No. 6 floor wire connector.
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 6 FLOOR WIRE - NO. 3 FLOOR WIRE) |
|
|
15. | INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR TEMPERATURE SENSOR) |
Click here
| OK | | REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR MOTOR TEMPERATURE SENSOR - NO. 6 FLOOR WIRE) |
| NG | | REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY |
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