Toyota Corolla Cross: Generator Inverter Actuator Stuck Open (P0A7A72)
DTC SUMMARY
MALFUNCTION DESCRIPTION
This DTC indicates that current does not flow as commanded due to a generator output circuit malfunction. The cause of this malfunction may be one of the following:
Internal inverter malfunction- Inverter with converter assembly internal circuit malfunction
- The connectors are not connected properly
DESCRIPTION
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P0A7A72 | Generator Inverter Actuator Stuck Open |
Malfunction is detected when offset component occurs in current flowing through generator with one phase open malfunction (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P0A7A |
MONITOR DESCRIPTION
The motor generator control ECU monitors the generator. If the motor generator control ECU detects a malfunction of the generator, the ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs | P0A7A (INF:P0A7A72): Open circuit malfunction |
|
Required sensors/components | Generator Inverter |
|
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 P0A7A (INF P0A7A72) 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
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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- 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.
- Apply the parking brake and secure the wheels using chocks.
NOTICE:
Perform this test with the AUTO function (shift-linked function) of the electric parking brake system off.
HINT:
When the parking brake indicator (red) is illuminated after the electric parking brake switch assembly has been pulled to the lock side, the maximum amount of braking force is applied if the electric parking brake switch assembly is pulled to the lock side one more time.
- Turn the ignition switch to ON (READY). [*1]
- Move the shift lever to D, and then firmly depress the brake pedal while fully depressing the accelerator pedal. Keep the brake pedal and accelerator pedal pressed for approximately 5 seconds. [*2]
HINT:
[*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.
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 the Generator High-voltage Circuit.
Click here
CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
Click here
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:
- P0A7A72 may be output as a result of the malfunctions 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 | 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 | ||
|
System main relay or high voltage circuit malfunction |
Hybrid control system |
P0AD911 | Hybrid/EV Battery Positive Contactor Circuit Short to Ground |
|
P0AD915 | Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open | ||
|
P0ADD11 | Hybrid/EV Battery Negative Contactor Circuit Short to Ground | ||
|
P0ADD15 | Hybrid/EV Battery Negative Contactor Circuit Short to Auxiliary Battery or Open | ||
|
P1C8449 | High Voltage Power Resource Circuit Short during Ready ON | ||
|
Malfunction Content | System |
Relevant DTC | |
|---|---|---|---|
|
Microcomputer malfunction |
Motor generator control system |
P0A1A47 | Generator Control Module Watchdog / Safety MC Failure |
|
P0A1A49 | Generator Control Module Internal Electronic Failure | ||
|
P0A1B1F | Generator Control Module Circuit Intermittent | ||
|
P0A1C47 | Drive Motor "B" Control Module Watchdog / Safety MCU Failure | ||
|
P0A1C49 | Drive Motor "B" Control Module Internal Electronic Failure | ||
|
P1C2A1C | Generator A/D Converter Circuit Circuit Voltage Out of Range | ||
|
P1C2A49 | Generator A/D Converter Circuit Internal Electronic Failure | ||
|
P1C2A71 | Generator A/D Converter Circuit Actuator Stuck | ||
|
P1C2B1C | Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range | ||
|
P1C2B49 | Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure | ||
|
P1C2B71 | Drive Motor "A" Control Module A/D Converter Circuit Actuator Stuck | ||
|
P1C2C1C | Drive Motor "B" Control Module AD Converter Circuit Voltage Out of Range | ||
|
P1C2C49 | Drive Motor "B" Control Module AD Converter Internal Electronic Failure | ||
|
P1C2C71 | Drive Motor "B" Control Module A/D Converter Circuit Actuator Stuck | ||
|
P310A83 | Communication Error from Drive Motor "B" to Drive Motor "A" Value of Signal Protection Calculation Incorrect | ||
|
P310A86 | Communication Error from Drive Motor "B" to Drive Motor "A" Signal (Some Circuit Quantity, Reported via Serial Data) Invalid | ||
|
P310A87 | Communication Error from Drive Motor "B" to Drive Motor "A" Missing Message | ||
|
P310B83 | Communication Error from Drive Motor "A" to Drive Motor "B" Value of Signal Protection Calculation Incorrect | ||
|
P310B86 | Communication Error from Drive Motor "A" to Drive Motor "B" Signal (Some Circuit Quantity, Reported via Serial Data) Invalid | ||
|
P310B87 | Communication Error from Drive Motor "A" to Drive Motor "B" Missing Message | ||
|
P313383 | Communication Error from Generator to Drive Motor "A" Value of Signal Protection Calculation Incorrect | ||
|
P313386 | Communication Error from Generator to Drive Motor "A" Signal Invalid | ||
|
P313387 | Communication Error from Generator to Drive Motor "A" Missing Message | ||
|
P313483 | Communication Error from Drive Motor "A" to Generator Value of Signal Protection Calculation Incorrect | ||
|
P313486 | Communication Error from Drive Motor "A" to Generator Signal Invalid | ||
|
P313487 | Communication Error from Drive Motor "A" to Generator Missing Message | ||
|
P32BF83 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "A") Value of Signal Protection Calculation Incorrect | ||
|
P32BF86 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "A") Signal (Some Circuit Quantity, Reported via Serial Data) Invalid | ||
|
P32BF87 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "A") Missing Message | ||
|
P32CF83 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "B") Value of Signal Protection Calculation Incorrect | ||
|
P32CF86 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "B") Signal (Some Circuit Quantity, Reported via Serial Data) Invalid | ||
|
P32CF87 | Lost Communication between Drive Motor "A" and "B" (Drive Motor "B") Missing Message | ||
|
Hybrid control system | P0A1B49 |
Drive Motor "A" Control Module Internal Electronic Failure | |
|
Power source circuit malfunction |
Motor generator control system | P06B01C |
Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range |
|
P06B31C | Drive Motor "B" Control Module Position Sensor REF Power Source Circuit Voltage Out of Range | ||
|
P06D61C | Generator Control Module Offset Power Circuit Voltage Out of Range | ||
|
P19F81C | Generator Control Module Offset Power Circuit Voltage Out of Range | ||
|
P19F91C | Drive Motor "B" Control Module Offset Power Circuit Voltage Out of Range | ||
|
P26DF1C | Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range | ||
|
Communication malfunction |
Motor generator control system |
U11B387 | Lost Communication with Hybrid/EV Powertrain Control Module (ch5) Missing Message |
|
Sensor and actuator circuit malfunction |
Motor generator control system |
P0A3F16 | Drive Motor "A" Position Sensor Circuit Voltage Below Threshold |
|
P0A3F21 | Drive Motor "A" Position Sensor Signal Amplitude < Minimum | ||
|
P0A3F22 | Drive Motor "A" Position Sensor Signal Amplitude > Maximum | ||
|
P0A4516 | Drive Motor "B" Position Sensor Circuit Voltage Below Threshold | ||
|
P0A4521 | Drive Motor "B" Position Sensor Signal Amplitude < Minimum | ||
|
P0A4522 | Drive Motor "B" Position Sensor Signal Amplitude > Maximum | ||
|
P0A4B16 | Generator Position Sensor Circuit Voltage Below Threshold | ||
|
P0A4B21 | Generator Position Sensor Signal Amplitude < Minimum | ||
|
P0A4B22 | Generator Position Sensor Signal Amplitude > Maximum | ||
|
P0A6012 | Drive Motor "A" Phase V Current (High Resolution) Circuit Short to Battery | ||
|
P0A6014 | Drive Motor "A" Phase V Current (High Resolution) Circuit Short to Ground or Open | ||
|
P0A601C | Drive Motor "A" Phase V Current (High Resolution) Circuit Voltage Out of Range | ||
|
P0A6312 | Drive Motor "A" Phase W Current (High Resolution) Circuit Short to Battery | ||
|
P0A6314 | Drive Motor "A" Phase W Current (High Resolution) Circuit Short to Ground or Open | ||
|
P0A631C | Drive Motor "A" Phase W Current (High Resolution) Circuit Voltage Out of Range | ||
|
P0A6912 | Drive Motor "B" Phase V Current(High Resolution) Circuit Short to Battery | ||
|
P0A6914 | Drive Motor "B" Phase V Current(High Resolution) Circuit Short to Ground or Open | ||
|
P0A691C | Drive Motor "B" Phase V Current(High Resolution) Circuit Voltage Out of Range | ||
|
P0A6C12 | Drive Motor "B" Phase W Current(High Resolution) Circuit Short to Battery | ||
|
P0A6C14 | Drive Motor "B" Phase W Current(High Resolution) Circuit Short to Ground or Open | ||
|
P0A6C1C | Drive Motor "B" Phase W Current(High Resolution) Circuit Voltage Out of Range | ||
|
P0BE512 | Drive Motor "A" Phase U Current Sensor Circuit Short to Battery | ||
|
P0BE514 | Drive Motor "A" Phase U Current Sensor Circuit Short to Ground or Open | ||
|
P0BE528 | Drive Motor "A" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BE912 | Drive Motor "A" Phase V Current Sensor Circuit Short to Battery | ||
|
P0BE914 | Drive Motor "A" Phase V Current Sensor Circuit Short to Ground or Open | ||
|
P0BE928 | Drive Motor "A" Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BED12 | Drive Motor "A" Phase W Current Sensor Circuit Short to Battery | ||
|
P0BED14 | Drive Motor "A" Phase W Current Sensor Circuit Short to Ground or Open | ||
|
P0BED28 | Drive Motor "A" Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BF112 | Drive Motor "B" Phase U Current Sensor Circuit Short to Battery | ||
|
P0BF114 | Drive Motor "B" Phase U Current Sensor Circuit Short to Ground or Open | ||
|
P0BF128 | Drive Motor "B" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BF512 | Drive Motor "B" Phase V Current Sensor Circuit Short to Battery | ||
|
P0BF514 | Drive Motor "B" Phase V Current Sensor Circuit Short to Ground or Open | ||
|
P0BF528 | Drive Motor "B" Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BF912 | Drive Motor "B" Phase W Current Sensor Circuit Short to Battery | ||
|
P0BF914 | Drive Motor "B" Phase W Current Sensor Circuit Short to Ground or Open | ||
|
P0BF928 | Drive Motor "B" Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0BFD62 | Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure | ||
|
P0BFE62 | Drive Motor "B" Phase U-V-W Current Sensor Signal Compare Failure | ||
|
P0C5013 | Drive Motor "A" Position Sensor Circuit "A" Circuit Open | ||
|
P0C5016 | Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Below Threshold | ||
|
P0C5017 | Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Above Threshold | ||
|
P0C5513 | Drive Motor "B" Position Sensor Circuit "A" Circuit Open | ||
|
P0C5516 | Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Below Threshold | ||
|
P0C5517 | Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Above Threshold | ||
|
P0C5A13 | Drive Motor "A" Position Sensor Circuit "B" Circuit Open | ||
|
P0C5A16 | Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Below Threshold | ||
|
P0C5A17 | Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Above Threshold | ||
|
P0C5F13 | Drive Motor "B" Position Sensor Circuit "B" Circuit Open | ||
|
P0C5F16 | Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Below Threshold | ||
|
P0C5F17 | Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Above Threshold | ||
|
P0C6413 | Generator Position Sensor Circuit "A" Circuit Open | ||
|
P0C6416 | Generator Position Sensor Circuit "A" Circuit Voltage Below Threshold | ||
|
P0C6417 | Generator Position Sensor Circuit "A" Circuit Voltage Above Threshold | ||
|
P0C6913 | Generator Position Sensor Circuit "B" Circuit Open | ||
|
P0C6916 | Generator Position Sensor Circuit "B" Circuit Voltage Below Threshold | ||
|
P0C6917 | Generator Position Sensor Circuit "B" Circuit Voltage Above Threshold | ||
|
P0D2D16 | Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold | ||
|
P0D2D17 | Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold | ||
|
P0DFA62 | Generator Phase U-V-W Current Sensor Signal Compare Failure | ||
|
P0E0012 | Generator Phase U Current Sensor Circuit Short to Battery | ||
|
P0E0014 | Generator Phase U Current Sensor Circuit Short to Ground or Open | ||
|
P0E0028 | Generator Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0E0412 | Generator Phase V Current Sensor Circuit Short to Battery | ||
|
P0E0414 | Generator Phase V Current Sensor Circuit Short to Ground or Open | ||
|
P0E0428 | Generator Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0E0812 | Generator Phase W Current Sensor Circuit Short to Battery | ||
|
P0E0814 | Generator Phase W Current Sensor Circuit Short to Ground or Open | ||
|
P0E0828 | Generator Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
|
P0E3116 | DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Below Threshold | ||
|
P0E3117 | DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Above Threshold | ||
|
P0E5111 | DC/DC Converter Current Sensor Circuit Short to Ground | ||
|
P0E5115 | DC/DC Converter Current Sensor Circuit Short to Battery or Open | ||
|
P0E512A | DC/DC Converter Current Sensor Signal Stuck In Range | ||
|
P1CAC49 | Generator Position Sensor Internal Electronic Failure | ||
|
P1CAD49 | Drive Motor "A" Position Sensor Internal Electronic Failure | ||
|
P1CAE49 | Drive Motor "B" Position Sensor Internal Electronic Failure | ||
|
P1CAF38 | Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect | ||
|
P1CB038 | Drive Motor "A" Position Sensor REF Signal Frequency Incorrect | ||
|
P1CB138 | Drive Motor "B" Position Sensor REF Signal Frequency Incorrect | ||
|
P1CFF62 | Hybrid/EV Battery Current/DC/DC Converte rCurrent Signal Compare Failure | ||
|
Hybrid control system | P0C7600 |
Hybrid/EV Battery System Discharge Time Too Long | |
|
P0D2D1C | Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range | ||
|
P0E311C | Boosting Converter Voltage Sensor "A" Voltage Out of Range | ||
|
P1C2D62 | Hybrid/EV Battery "A" Voltage Sensor/Boosting Converter Voltage Sensor "A" Signal Compare Failure | ||
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 | .gif) | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. | CHECK GENERATOR HIGH-VOLTAGE CIRCUIT |
Click here
HINT:
If the "Generator High-voltage Circuit" inspection results are normal, perform the next step.
| NEXT | | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
READ NEXT:
Generator Inverter Actuator Stuck Closed (P0A7A73)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when a short is detected in the inverter with converter assembly (generator inverter) or the hybrid vehicle transaxle assembly (generator (MG1)).
Generator Inverter Stuck On (P0A7A9E,P1C5F19)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC indicates that a large current flowed in the inverter generator. The cause of this malfunction may be one of the following:
Area Main Malfunction
Drive Motor "A" Performance (P0A9000)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC indicates that magnetic force deterioration of the permanent magnet located in the rotor inside the motor (MG2) has been detected. The cause of this malfun
SEE MORE:
Parking brake
The parking brake can be
set or released automatically
or manually.
In automatic mode, the
parking brake can be set or
released automatically
according to shift lever
operation. Also, even in
automatic mode, the parking
brake can be set or
released manually.
Operating instructions
■ Using the man
Removal
REMOVAL
CAUTION / NOTICE / HINT
COMPONENTS (REMOVAL)
Procedure
Part Name Code
1
SECURE VEHICLE
-
-
-
2
NO. 1 ENGINE UNDER COVER ASSEMBLY
