Lexus ES: Drive Motor "A" Inverter Stuck On (P0A789E,P1C5D19)
DTC SUMMARY
MALFUNCTION DESCRIPTION
This DTC indicates that a large current flowed through the motor inverter. The cause of this malfunction may be one of the following:
| Area | Main Malfunction Description |
|---|---|
| Hybrid vehicle transaxle assembly |
|
| Resolver | Open or short circuit in the motor resolver |
| Inverter |
|
| Inverter cooling system |
|
DESCRIPTION
For a description of the inverter.
Click here .gif)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0A789E | Drive Motor "A" Inverter Stuck On | Motor inverter fail signal detected (circuit malfunction) (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C5D19 | Drive Motor "A" Inverter Circuit Current Above Threshold | Motor inverter fail signal detected: A malfunction is detected in any of the motor (MG2) components (motor inverter, motor (MG2), motor resolver, motor generator control ECU, etc.). (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| DTC No. | Data List |
|---|---|
| P0A789E P1C5D19 | Emergency Shut Down Signal |
MONITOR DESCRIPTION
If too much current is detected flowing through the motor inverter, the motor inverter transmits an inverter fail signal to the motor generator control ECU. Upon receiving this signal, the motor generator control ECU will illuminate the MIL and set a DTC.
MONITOR STRATEGY
| Related DTCs | P0A78 (INF P0A789E): MFIV detection (Circuit malfunction) P1C5D (INF P1C5D19): MFIV detection (Over current malfunction) |
| Required sensors/components | Motor 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 P0A78 (INF P0A789E) is not detected DTC P1C5D (INF P1C5D19) 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.
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-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- With power switch on (IG) and wait for 5 seconds or more. [*1]
-
Turn the power switch on (READY) and wait for 5 seconds or more. [*2]
HINT:
Check that there are no abnormalities (abnormal sounds, coolant leaks, etc.).
-
Drive the vehicle for approximately 10 minutes referring to the following freeze frame data items: "Vehicle Speed". [*3]
NOTICE:
As the state of charge of the HV battery may be low after driving in fail-safe mode, it will automatically be charged for 5 to 10 minutes with power switch on (READY) after repairs have been performed.
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 / 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 or N/A, perform the normal judgment procedure again.
WIRING DIAGRAM
Refer to the wiring diagram for the Generator Resolver Circuit.
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Refer to the wiring diagram for the Motor Resolver Circuit.
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Refer to the wiring diagram for the Generator High-voltage Circuit.
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Refer to the wiring diagram for the Motor High-voltage Circuit.
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Refer to the wiring diagram for the Inverter Low-voltage Circuit.
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Refer to the wiring diagram for the Cooling System.
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CAUTION / NOTICE / HINT
CAUTION:
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-
Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
-
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
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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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- After troubleshooting and repairing all output DTCs, be sure to replace the inverter with converter assembly. (The inverter with converter assembly may have been broken or damaged due to overheating.)
PROCEDURE
| 1. | CHECK DTC OUTPUT (MOTOR GENERATOR CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Motor Generator > Trouble Codes| Result | Proceed to |
|---|---|
| P0A7873 is not output. | A |
| P0A7873 is also output. | B |
NOTICE:
- If P0A7873 is output, troubleshoot it first. After completing the troubleshooting for P0A7873, perform troubleshooting for this DTC.
- Parts repaired or replaced during troubleshooting for P0A7873 do not need to be re-inspected in this diagnostic procedure.
(e) Turn the power switch off.
| B | .gif) | GO TO STEP 3 |
|
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| 2. | CHECK DTC OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes Powertrain > Motor Generator > Trouble Codes| Result | Proceed to |
|---|---|
| P0A789E or P1C5D19 only is output, or DTCs except the ones in the table below are also output. | A |
| DTCs of hybrid control system in the tables below are output. | B |
| DTCs of motor generator control system in the tables below are output. | C |
| 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 | ||
| 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 Battery or Open | ||
| P0ADD11 | Hybrid/EV Battery Negative Contactor Circuit Short to Ground | ||
| P0ADD15 | Hybrid/EV Battery Negative Contactor Circuit Short to Battery or Open | ||
| P1C8449 | High Voltage Power Resource Circuit Short during Ready ON | ||
| HV Battery Malfunction | Hybrid control system | P0AFC16 | Hybrid/EV Battery Sensor Module Circuit Voltage Below Threshold |
| P0AFC96 | Hybrid/EV Battery Sensor Module Component Internal Failure | ||
| P1CBE1E | Hybrid/EV Battery Block 1 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CBF1E | Hybrid/EV Battery Block 2 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC01E | Hybrid/EV Battery Block 3 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC11E | Hybrid/EV Battery Block 4 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC21E | Hybrid/EV Battery Block 5 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC31E | Hybrid/EV Battery Block 6 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC41E | Hybrid/EV Battery Block 7 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC51E | Hybrid/EV Battery Block 8 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC61E | Hybrid/EV Battery Block 9 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CC71E | Hybrid/EV Battery Block 10 (Voltage Difference) Circuit Resistance Out of Range | ||
| P1CFD1E | Hybrid/EV Battery Block 11 (Voltage Difference) Circuit Resistance Out of Range | ||
| P301100 | Hybrid/EV Battery Block 1 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301200 | Hybrid/EV Battery Block 2 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301300 | Hybrid/EV Battery Block 3 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301400 | Hybrid/EV Battery Block 4 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301500 | Hybrid/EV Battery Block 5 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301600 | Hybrid/EV Battery Block 6 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301700 | Hybrid/EV Battery Block 7 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301800 | Hybrid/EV Battery Block 8 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P301900 | Hybrid/EV Battery Block 9 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P302000 | Hybrid/EV Battery Block 10 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| P302100 | Hybrid/EV Battery Block 12 (Internal Resistance Difference) Circuit Resistance Out of Range (Extreme) | ||
| U029A87 | Lost Communication with Hybrid/EV Battery Sensor Module Missing Message | ||
| Malfunction Content | System | Relevant DTC | |
|---|---|---|---|
| Microcomputer malfunction | Motor generator control system | P0A1A47 | Generator Control Module Watchdog / Safety μC Failure |
| P0A1A49 | Generator Control Module Internal Electronic Failure | ||
| P0A1B1F | Generator Control Module Circuit Intermittent | ||
| P1C2A1C | Generator A/D Converter Circuit Circuit Voltage Out of Range | ||
| P1C2A49 | Generator A/D Converter Circuit Internal Electronic Failure | ||
| 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 | ||
| 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 | ||
| 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 |
| P06D61C | Generator Control Module Offset Power Circuit Voltage Out of Range | ||
| Communication malfunction | Motor generator control system | P312487 | Lost Communication between Drive Motor "A" and HV ECU Missing Message |
| Hybrid control system | P312387 | Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module 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 | ||
| 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 | ||
| 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 | ||
| P0BFD62 | Drive Motor "A" 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 | ||
| 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 | ||
| 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 | ||
| Sensor and actuator circuit malfunction | Motor generator control system | 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 | ||
| P0E5128 | DC/DC Converter Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
| 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 | ||
| P1CAF38 | Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect | ||
| P1CB038 | Drive Motor "A" Position Sensor REF Signal Frequency Incorrect | ||
| P1CFF62 | Hybrid/EV Battery Current/DC/DC Converter Current Signal Compare Failure | ||
| Hybrid control system | P0C7600 | Hybrid/EV Battery System Discharge Time Too Long | |
| P0D2D1C | Drive Motor "A" Inverter after Boosting Voltage Sensor Circuit Voltage Out of Range | ||
| P0E311C | Drive Motor "A" Inverter before Boosting Voltage Sensor Circuit Voltage Out of Range | ||
| System malfunction | Motor generator control system | P0A9000 | Drive Motor "A" Performance |
| P0A9200 | Hybrid Generator Performance | ||
| P0A949E | DC/DC Converter Stuck On | ||
| P0BFF1D | Drive Motor "A" Circuit Current Out of Range | ||
| P0C1900 | Drive Motor "A" Execution Torque Performance | ||
| P0CA300 | DC/DC Converter Step Up Voltage Performance | ||
| P0D3319 | DC/DC Converter Circuit Current Above Threshold | ||
| P0E5717 | DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Above Threshold | ||
| P1CB59E | DC/DC Converter Voltage Sensor "A" (VL) Stuck On | ||
| P314F1F | DC/DC Converter Voltage Sensor "A" (VL) Circuit Intermittent | ||
| P31531D | DC/DC Converter Current Sensor Circuit Current Out of Range | ||
| Hybrid control system | P0A9300 | Inverter "A" Cooling System Performance | |
| P0AA649 | Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure | ||
| P0C7396 | Motor Electronics Coolant Pump "A" Component Internal Failure | ||
| P314A31 | Motor Electronics Coolant Pump "A" No Signal | ||
| Relevant DTC | |
|---|---|
| P0A3F1F | Drive Motor "A" Position Sensor Circuit Intermittent |
| P0A4B1F | Generator Position Sensor Circuit Intermittent |
| P0A601F | Drive Motor "A" Phase V Current (High Resolution) Circuit Intermittent |
| P0A631F | Drive Motor "A" Phase W Current (High Resolution) Circuit Intermittent |
| P0BE51F | Drive Motor "A" Phase U Current Sensor Circuit Intermittent |
| P0BE91F | Drive Motor "A" Phase V Current Sensor Circuit Intermittent |
| P0BED1F | Drive Motor "A" Phase W Current Sensor Circuit Intermittent |
| P0C501F | Drive Motor "A" Position Sensor Circuit "A" Circuit Intermittent |
| P0C5A1F | Drive Motor "A" Position Sensor Circuit "B" Circuit Intermittent |
| P0C641F | Generator Position Sensor Circuit "A" Circuit Intermittent |
| P0C691F | Generator Position Sensor Circuit "B" Circuit Intermittent |
| P0D2D1F | Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Intermittent |
| P0E001F | Generator Phase U Current Sensor Circuit Intermittent |
| P0E041F | Generator Phase V Current Sensor Circuit Intermittent |
| P0E081F | Generator Phase W Current Sensor Circuit Intermittent |
| P0E311F | DC/DC Converter Voltage Sensor "A" (VL) Circuit Intermittent |
| P0E511F | DC/DC Converter Current Sensor Circuit Intermittent |
| P1C601F | Generator Control Module Position Sensor REF Power Source Circuit Intermittent |
| P1C621F | Generator Control Module Offset Power Circuit Intermittent |
| P1C641F | Generator Control Module Circuit Intermittent |
| P1C651F | Generator Control Module Circuit Intermittent |
| P1C671F | Drive Motor "A" Phase U-V-W Current Sensor Circuit Intermittent |
| P1C691F | Generator Phase U-V-W Current Sensor Circuit Intermittent |
| P31241F | Lost Communication between Drive Motor "A" and HV ECU Circuit Intermittent |
HINT:
-
P0A789E or P1C5D19 may be output as a result of the malfunctions indicated by the DTCs above.
- 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.)
- If P0A789E is output, replace the inverter with converter assembly after completing repairs.
(e) Turn the power switch off.
| A | | GO TO STEP 5 |
| B | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
| C | | GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) |
| 3. | GO TO DTC CHART (P0A7873) |
Click here
HINT:
After repairs have been completed, perform the next step.
|
| 4. | CHECK DTC OUTPUT |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes Powertrain > Motor Generator > Trouble Codes| Result | Proceed to |
|---|---|
| P0A789E or P1C5D19 only is output, or DTCs except the ones in the table below are also output. | A |
| DTCs of hybrid control system in the tables below are output. | B |
| DTCs of motor generator control system in the tables below are output. | C |
| Malfunction Content | System | Relevant DTC | |
|---|---|---|---|
| Microcomputer malfunction | Motor generator control system | P0A1A47 | Generator Control Module Watchdog / Safety μC Failure |
| P0A1A49 | Generator Control Module Internal Electronic Failure | ||
| P0A1B1F | Generator Control Module Circuit Intermittent | ||
| P1C2A1C | Generator A/D Converter Circuit Circuit Voltage Out of Range | ||
| P1C2A49 | Generator A/D Converter Circuit Internal Electronic Failure | ||
| 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 | ||
| 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 | ||
| 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 |
| P06D61C | Generator Control Module Offset Power Circuit Voltage Out of Range | ||
| Communication malfunction | Motor generator control system | P312487 | Lost Communication between Drive Motor "A" and HV ECU Missing Message |
| Hybrid control system | P312387 | Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module 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 | ||
| 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 | ||
| P0BFD62 | Drive Motor "A" 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 | ||
| 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 | ||
| 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 | ||
| P0E5128 | DC/DC Converter Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure | ||
| P0E512A | DC/DC Converter Current Sensor Signal Stuck In Range | ||
| Sensor and actuator circuit malfunction | Motor generator control system | P1CAC49 | Generator Position Sensor Internal Electronic Failure |
| P1CAD49 | Drive Motor "A" 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 | ||
| P1CFF62 | Hybrid/EV Battery Current/DC/DC Converter Current Signal Compare Failure | ||
| Hybrid control system | P0C7600 | Hybrid/EV Battery System Discharge Time Too Long | |
| P0D2D1C | Drive Motor "A" Inverter after Boosting Voltage Sensor Circuit Voltage Out of Range | ||
| P0E311C | Drive Motor "A" Inverter before Boosting Voltage Sensor Circuit Voltage Out of Range | ||
| System malfunction | Motor generator control system | P0A9200 | Hybrid Generator Performance |
| P0A949E | DC/DC Converter Stuck On | ||
| P0BFF1D | Drive Motor "A" Circuit Current Out of Range | ||
| P0C1900 | Drive Motor "A" Execution Torque Performance | ||
| P0CA300 | DC/DC Converter Step Up Voltage Performance | ||
| P0D3319 | DC/DC Converter Circuit Current Above Threshold | ||
| P0E5717 | DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Above Threshold | ||
| P1CB59E | DC/DC Converter Voltage Sensor "A" (VL) Stuck On | ||
| P314F1F | DC/DC Converter Voltage Sensor "A" (VL) Circuit Intermittent | ||
| P31531D | DC/DC Converter Current Sensor Circuit Current Out of Range | ||
| Hybrid control system | P0A9300 | Inverter "A" Cooling System Performance | |
| P0AA649 | Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure | ||
| P0C7396 | Motor Electronics Coolant Pump "A" Component Internal Failure | ||
| P314A31 | Motor Electronics Coolant Pump "A" No Signal | ||
HINT:
-
P0A789E or P1C5D19 may be output as a result of the malfunctions indicated by the DTCs above.
- 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.)
- If P0A789E is output, replace the inverter with converter assembly after completing repairs.
(e) Turn the power switch off.
| B | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
| C | | GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) |
|
| 5. | CHECK FREEZE FRAME DATA AND DIAGNOSIS RELATED INFORMATION |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Utility / Diagnosis Related Information.
Powertrain > Motor Generator > Utility| Tester Display |
|---|
| Diagnosis Related Information |
(d) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
Powertrain > Motor Generator > Trouble Codes(e) Read the diagnosis related information and freeze frame data of DTC P0A789E or P1C5D19.
| Result | Proceed to |
|---|---|
| DTC P312487 is listed in Diagnosis Related Information. | A |
| DTC P312487 is not listed in Diagnosis Related Information and the value of freeze frame data item Emergency Shutdown Signal is ON. | B |
| Other than above | C |
(f) Turn the power switch off.
| A | | GO TO DTC CHART (P312487) |
| B | | GO TO DTC CHART (P321E9F) |
|
| 6. | CHECK FREEZE FRAME DATA |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
Powertrain > Motor Generator > Trouble Codes(d) Read the freeze frame data of DTC P0A789E or P1C5D19
| Result | Proceed to |
|---|---|
| Motor Inverter Temperature is 110 °C (230 °F) or more | A |
| Other than above | B |
(e) Turn the power switch off.
| B | | GO TO STEP 8 |
|
| 7. | CHECK COOLING SYSTEM |
Click here
| NEXT | | GO TO STEP 8 |
| 8. | 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 |
|
| 9. | CHECK GENERATOR RESOLVER CIRCUIT |
Click here
|
| 10. | CHECK MOTOR RESOLVER CIRCUIT |
Click here
|
| 11. | CHECK GENERATOR HIGH-VOLTAGE CIRCUIT |
Click here
|
| 12. | CHECK MOTOR HIGH-VOLTAGE CIRCUIT |
Click here
|
| 13. | CHECK INVERTER LOW-VOLTAGE CIRCUIT |
Click here
HINT:
If the "Inverter Low-voltage Circuit" inspection results are normal, perform the next step.
| NEXT | | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
READ NEXT:
Drive Motor "A" Inverter Actuator Stuck Closed (P0A7873)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when a short is detected in the inverter with converter assembly (motor inverter) or the hybrid vehicle transaxle assembly (motor (MG2)). The cau
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:
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)).
SEE MORE:
System Description
SYSTEM DESCRIPTION POWER WINDOW CONTROL SYSTEM DESCRIPTION (a) The power window control system controls the power window operation using the power window regulator motor assemblies. The main controls of this system are the multiplex network master switch assembly (mounted on the driver door), power
Sensor (Motor) Failure (B2341,B2344)
DESCRIPTION When the sliding roof ECU (sliding roof drive gear assembly) detects a motor malfunction and the sliding roof operation is stopped, DTC B2341 is stored. When the sliding roof ECU (sliding roof drive gear assembly) detects a gear position malfunction and the sliding roof operation is stop
