MALFUNCTION DESCRIPTION
These DTCs indicate that the motor inverter temperature sensor value is abnormal. The cause of this malfunction may be one of the following:
Inverter with converter assembly internal circuit malfunction
Coolant circulation abnormal (frozen or leaking, etc.)
The connectors are not connected properly
The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, detects the temperature of the motor inverter using the motor inverter temperature sensor. If necessary, the motor generator control ECU (MG ECU) will limit inverter output to help prevent the motor inverter from overheating. The motor generator control ECU also detects malfunctions in the sensor based on the temperature sensor values.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate | Note |
|---|---|---|---|---|---|---|
| P0AED1C | Drive Motor Inverter Temperature Sensor "A" Circuit Voltage Out of Range | The actual motor inverter temperature high and the difference between the estimated motor inverter temperature and the actual temperature exceeds a threshold for 10 seconds, or after a long soak, the motor inverter temperature sensor value differs from the values of other sensors.
(1 trip detection logic) |
·
Inverter cooling system ·
Cooling fan system ·
Inverter with converter assembly ·
Wire harness or connector |
Comes on | Master Warning:
Comes on |
SAE Code:
P0AEE |
If the motor generator control ECU detects a malfunction of the Drive Motor Inverter Temperature Sensor "A", it will illuminate the MIL and store a DTC.
| Related DTCs | P0AEE (INF P0AED1C): Drive motor inverter temperature sensor "A" circuit malfunction (deviation) |
| Required sensors/components | Inverter, boost converter |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | 1 driving cycle |
| Sequence of operation | None |
| The monitor will run whenever the following DTCs are not stored | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
| TMC's intellectual property | - |
| Motor generator control ECU | DTC P0AEE (INF P0AED1C) is not detected |
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.
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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 (READY). [*1]
Drive the vehicle for approximately 10 minutes with the value of Data List item "Inverter Coolant Temperature" 25°C (77°F) or more. [*2]
[*1] to [*2]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
Check the DTC judgment result.
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.
Refer to the wiring diagram for the Cooling System.
Refer to the precautions before inspecting high voltage circuit.
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
When disconnecting and reconnecting the auxiliary battery.
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
P0AED1C may be output as a result of the malfunction indicated by the DTCs in table below.
The chart above is listed in inspection order of priority.
Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
| Malfunction Content | Relevant DTC | |
|---|---|---|
| Insulation malfunction | P1C7C49 | Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure |
| P1C7D49 | Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure | |
| P1C7E49 | Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure | |
| P1C7F49 | Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure | |
| P1C8049 | Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure | |
| Malfunction Content | Relevant DTC | |
|---|---|---|
| Sensor and actuator circuit malfunction | P0C7396 | Motor Electronics Coolant Pump "A" Component Internal Failure |
| P314A31 | Motor Electronics Coolant Pump "A" No Signal | |
| System malfunction | P0A9300 | Inverter "A" Cooling System Performance |
| 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
B
C
If the "Cooling System" inspection results are normal, perform the next step.
| Proceed to |
|---|
| NEXT |
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