DTC SUMMARY
MALFUNCTION DESCRIPTION
These DTCs indicate that the temperature sensor value is abnormal. The cause of this malfunction may be one of the following:
Area | Main Malfunction Description |
---|---|
Inverter low-voltage circuit | The connectors are not connected properly |
Hybrid cooling system | Coolant circulation abnormal (frozen or leaking, etc.) |
Inside of inverter | Inverter with converter assembly internal circuit malfunction |
DESCRIPTION
The motor generator control ECU detects the HV coolant temperature using the HV coolant temperature sensor built into the inverter with converter assembly. The motor generator control ECU uses signals from the coolant temperature sensor to check the effectiveness of the inverter cooling system. If necessary, the motor generator control ECU will limit inverter output to help prevent inverter overheating. The motor generator control ECU also detects malfunctions in the sensor based on the HV coolant temperature sensor values.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0A001C | Motor Electronics Coolant Temperature Sensor Circuit Voltage Out of Range | The actual inverter coolant temperature is high and the difference between the estimated inverter coolant temperature and the actual temperature exceeds a threshold for 10 seconds, or after a long soak, the inverter coolant temperature sensor value differs from the values of other sensors. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
DTC No. | Data List |
---|---|
P0A001C |
|
MONITOR DESCRIPTION
If the motor generator control ECU detects a malfunction of the Motor Electronics Coolant Temperature Sensor, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
Related DTCs | P0A01 (INF P0A001C): Motor Electronics Coolant Temperature Sensor Circuit Range / Performance |
Required sensors/components | Inverter, boost converter |
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 P0A01 (INF P0A001C) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
NOTICE:
Make sure that the temperature of the motor and generator do not drop below -10°C (14°F).
HINT:
It is possible to turn the power switch on (READY) without turning it on (IG) first.
HINT:
[*1] to [*4]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
WIRING DIAGRAM
Refer to the wiring diagram for the Cooling System.
Click here
CAUTION / NOTICE / HINT
CAUTION:
Click here
HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a | Without waiting for 10 minutes |
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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PROCEDURE
1. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes Result | Proceed to |
---|---|
P0A001C only is output, or DTCs except the ones in the table below are also output. | A |
Any of the following DTCs are also output. | B |
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 |
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 |
HINT:
(e) Turn the power switch off.
B | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
|
2. | CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY 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 COOLING SYSTEM |
Click here
HINT:
If the "Cooling System" inspection results are normal, perform the next step.
NEXT | REPLACE INVERTER WITH CONVERTER ASSEMBLY |