| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026PV9 |
| Model Year Start: 2023 | Model: Corolla HV | Prod Date Range: [09/2022 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P0A9300; Inverter "A" Cooling System Performance; 2023 - 2025 MY Corolla HV [09/2022 - ] | ||
|
DTC |
P0A9300 |
Inverter "A" Cooling System Performance |
DTC SUMMARY
MALFUNCTION DESCRIPTION
This DTC indicates when the temperature sensor value inside the inverter has become abnormal. The cause of this malfunction may be one of the following:
Internal inverter malfunction
- Inverter internal circuit malfunction
- Malfunction in ECU that controls the inverter
- Malfunction in sensor for inverter control (coolant temperature sensor)
Hybrid cooling system malfunction
- Coolant is leaking, coolant level is insufficient, coolant is frozen or coolant passage is clogged.
- Grille is blocked.
DESCRIPTION
Refer to the system description for the Cooling System.
Click here
![2023 - 2025 MY Corolla HV [09/2022 - ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): Cooling System+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
Note |
|---|---|---|---|---|---|---|
|
P0A9300 |
Inverter "A" Cooling System Performance |
(1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
SAE Code: P0A93 |
- *: w/ Grille shutter system
MONITOR DESCRIPTION
If the hybrid vehicle control ECU detects a malfunction of the inverter cooling system, the ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs |
P0A93 (INF P0A9300): HV cooling system malfunction |
|
Required sensors/components |
Water pump, radiator fan, 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
|
Hybrid vehicle control ECU |
DTC P0A93 (INF P0A9300) is not detected |
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
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- 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 ignition switch ON and wait for 5 seconds or more. [*1]
- Turn the ignition switch to ON (READY) and wait for 5 seconds or more. [*2]
-
Perform a road test according to the freeze frame data item "Vehicle Speed" for approximately 10 minutes. [*3]
NOTICE:
As the state of charge of the HV battery voltage may be low after driving in fail-safe mode, it will automatically be charged for 5 to 10 minutes after repairs have been performed and turn the ignition switch to ON (READY).
HINT:
[*1] to [*3] : 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 / 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 the normal judgment procedure again.
WIRING DIAGRAM
Refer to the wiring diagram for Cooling System.
Click here
CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
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NOTICE:
-
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here
-
When disconnecting and reconnecting the auxiliary battery
HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
Click here
HINT:
-
P0A9300 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.)
Table 1
|
Malfunction Content |
System |
Relevant DTC |
|
|---|---|---|---|
|
Insulation malfunction |
Hybrid Control System |
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 |
||
Table 2
|
Malfunction Content |
System |
Relevant DTC |
|
|---|---|---|---|
|
Sensor and actuator circuit malfunction |
Hybrid Control System |
P0C7396 |
Motor Electronics Coolant Pump "A" Component Internal Failure |
|
P314A31 |
Motor Electronics Coolant Pump "A" No Signal |
||
|
Motor Generator Control System |
P0A0011 |
Motor Electronics Coolant Temperature Sensor Circuit Short to Ground |
|
|
P0A0015 |
Motor Electronics Coolant Temperature Sensor Circuit Short to Battery or Open |
||
|
System malfunction |
SFI System |
P059A71 |
Active Grille Air Shutter "A" Actuator Stuck |
|
P059A79 |
Active Grille Air Shutter "A" Mechanical Linkage Failure |
||
|
P05A212 |
Active Grille Air Shutter "A" Circuit Short to Battery |
||
|
P15AD87 |
Active Grille Air Shutter "A" Missing Message |
||
PROCEDURE
|
1. |
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 |
|
|
2. |
CHECK COOLING SYSTEM |
Click here
HINT:
If the "Cooling System" inspection results are normal, perform the next step.
| NEXT |
|
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