Toyota Corolla Cross: DC/DC Converter Step Up Voltage Performance (P0CA300)
DTC SUMMARY
MALFUNCTION DESCRIPTION
This DTC indicates that it has been detected that the VH voltage cannot be boosted as commanded due to malfunction of the boost converter system. 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
The boost converter boosts the 207.2 V DC from the HV battery to a maximum of approximately 600 V DC. The inverter converts the voltage that has been boosted by the boost converter into alternating current, which is used for driving generator (MG1) and motor (MG2). When a motor or generator operates as a generator, the alternating current that it creates is converted into direct current by the inverter. Then the boost converter drops this voltage to direct current of approximately 207.2 V in order to charge the HV battery.
The motor generator control ECU (MG ECU) uses a voltage sensor (VL) that is built into the boost converter to detect the high voltage before it is boosted. It also uses a voltage sensor (VH) that is built into the inverter to detect the high voltage after it is boosted. Based on the voltage before and after it is boosted, the motor generator control ECU (MG ECU) controls the operation of the boost converter to boost the voltage to the target voltage.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P0CA300 | DC/DC Converter Step Up Voltage Performance |
Abnormal voltage execution value: Boosting cannot be performed as requested due to a boost converter system malfunction. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P0CA3 |
HINT:
With the vehicle stopped, apply the parking brake and turn the ignition switch to ON (READY).
With the shift lever in P, depress the brake pedal firmly, and quickly and fully depress the accelerator pedal.
Immediately after the accelerator pedal is fully depressed, "VH-Voltage after boosting" will be between 400 and 600 V.
MONITOR DESCRIPTION
If the difference between the requested boost converter voltage and the actual boost converter voltage exceeds a predetermined value, the motor generator control ECU determines that there is a malfunction of the execution or monitoring of the boost converter voltage, and the ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs | P0CA3 (INF P0CA300): Discrepancy between commanded and actual voltage |
|
Required sensors/components | Boost converter |
|
Frequency of operation | Continuous |
|
Duration | TMC's intellectual property |
|
MIL operation | 1 driving cycle |
|
Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
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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
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TMC's intellectual property | - |
COMPONENT OPERATING RANGE
|
Motor generator control ECU | DTC P0CA3 (INF P0CA300) 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.
- Turn the ignition switch to ON and wait for 5 seconds or more. [*1]
- Turn the ignition switch to ON (READY) and wait for 5 seconds or more. [*2]
- Press the HV EV CHG HOLD mode switch to enter HV drive mode. [*3]
- Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine. [*4]
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 ignition switch ON (READY) after repairs have been performed.
HINT:
[*1] to [*4]: 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.
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:
- P0CA300 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 | 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 | ||
|
P0A1B47 | Drive Motor "A" Control Module Watchdog / Safety MC Failure | ||
|
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 Intermittent | ||
|
Communication malfunction | Motor generator control system |
U11B387 | Lost Communication with Hybrid/EV Powertrain Control Module (ch5) Missing Message |
|
Hybrid control system | U117E87 |
Lost Communication with Drive Motor Control Module "A" (ch4) 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 | ||
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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 | ||
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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 | ||
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P0C5516 | Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Below Threshold | ||
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P0C5517 | Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Above Threshold | ||
|
P0C5A13 | Drive Motor "A" Position Sensor Circuit "B" Circuit Open | ||
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P0C5A16 | Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Below Threshold | ||
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P0C5A17 | Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Above Threshold | ||
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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 | ||
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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 | ||
|
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 Converter Current 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 | ||
|
System malfunction |
Motor generator control system | P0A9000 |
Drive Motor "A" Performance |
|
P0A9100 | Drive Motor "B" Performance | ||
|
P0A9200 | Hybrid/EV Generator Performance | ||
|
P0BFF1D | Drive Motor "A" Circuit Current Out of Range | ||
|
P0C021D | Drive Motor "B" System Circuit Current Out of Range | ||
|
P0C1900 | Drive Motor "A" Execution Torque Performance | ||
|
P0C1A00 | Drive Motor "B" Execution Torque Performance | ||
|
P0E7100 | Generator Execution Torque Performance | ||
|
P1CA51D | Hybrid/EV Generator Circuit Current Out of Range | ||
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 |
| A | .gif) | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
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