RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604233 MOTOR GENERATOR CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  MOTOR GENERATOR CONTROL SYSTEM  P0A7A72  Generator Inverter Actuator Stuck Open  


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


Inverter low-voltage 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)
·

Inverter with converter assembly

·

Motor cable

·

Hybrid vehicle transaxle assembly

·

Wire harness or connector


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 hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>UTILITY

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>DTC CHECK / CLEAR



1.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

2.

Turn the ignition switch off and wait for 2 minutes or more.

3.

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.


4.

Turn the ignition switch to ON (READY). [*1]

5.

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.


6.

Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.

7.

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 hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>PRECAUTION


NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

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 hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




HINT:

P0A7A72 may be output as a result of the malfunctions indicated by the DTCs in table below.

(a)

The chart above is listed in inspection order of priority.

(b)

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
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

Table 2
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 hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM>P033506

Result:
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

2.CHECK GENERATOR HIGH-VOLTAGE CIRCUIT

B

CONNECT SECURELY

C

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK GENERATOR HIGH-VOLTAGE CIRCUIT

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>Generator High-voltage Circuit

HINT:

If the "Generator High-voltage Circuit" inspection results are normal, perform the next step.


Result:
Proceed to
NEXT



NEXT

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>INVERTER WITH CONVERTER>REMOVAL