| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026PXF |
| Model Year Start: 2023 | Model: Corolla HV | Prod Date Range: [09/2022 - ] |
| Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P0BFD62,P1C671F; Drive Motor A" Phase U-V-W Current Sensor Signal Compare Failure"; 2023 - 2025 MY Corolla HV [09/2022 - ] | ||
|
DTC |
P0BFD62 |
Drive Motor A" Phase U-V-W Current Sensor Signal Compare Failure" |
|
DTC |
P1C671F |
Drive Motor "A" Phase U-V-W Current Sensor Circuit Intermittent |
DTC SUMMARY
MALFUNCTION DESCRIPTION
These DTCs indicate that the current sensor value is abnormal. The cause of this malfunction may be one of the following:
Internal inverter malfunction
- Current sensor malfunction
- Inverter with converter assembly internal circuit malfunction
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
Note |
|---|---|---|---|---|---|---|
|
P0BFD62 |
Drive Motor "A" Phase U-V-W Current Sensor Signal Compare Failure |
Motor inverter current sensor characteristic malfunction: The value of the total output of the U, V and W phase current sensors exceeds the threshold.*1 (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
SAE Code: P0BFD |
|
P1C671F |
Drive Motor "A" Phase U-V-W Current Sensor Circuit Intermittent |
The value of the total output of the U, V and W phase current sensors exceeds the threshold detected when DTC P0C7917, P0E5717, P0D3319, P1C5D19, P1C5F19 or P1C5E19 is stored. (1 trip detection logic) |
|
Does not come on |
Master Warning: Does not come on |
SAE Code: P1C67 |
HINT:
*1: Under normal conditions, the value of the total output of the U, V and W phase current sensors is approximately 0.
MONITOR DESCRIPTION
If the value of the total output of the U, V and W phase current sensors exceeds a threshold, a malfunction will be detected, the motor generator control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs |
P0BFD (INF P0BFD62): Signal Compare Failure |
|
Required sensors/components |
Motor inverter phase U current sensor Motor inverter phase V current sensor Motor inverter phase W current sensor |
|
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 P0BFD (INF P0BFD62) 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
![2023 - 2025 MY Corolla HV [09/2022 - ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): UTILITY](/t3Portal/stylegraphics/info.gif)
-
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) with the shift lever in P 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]
-
Drive the vehicle for approximately 10 minutes referring to the following freeze frame data item: "Vehicle Speed". [*5]
HINT:
[*1] to [*5]: 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 Motor 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:
-
P0BFD62 or P1C671F 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.)
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 |
||
|
High voltage system malfunction |
Hybrid control system |
P0AA649 |
Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure |
Table 2
|
Malfunction Content |
System |
Relevant DTC |
|
|---|---|---|---|
|
Microcomputer malfunction |
Motor generator control system |
P0A1B47 |
Drive Motor "A" Control Module Watchdog / Safety MC 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 |
||
|
P1C2B71 |
Drive Motor "A" Control Module A/D Converter Circuit Actuator Stuck |
||
|
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 |
U11B387 |
Lost Communication with Hybrid/EV Powertrain Control Module (ch5) Missing Message |
|
System malfunction |
Motor generator control system |
P0A7873 |
Drive Motor "A" Inverter Actuator Stuck Closed |
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 MOTOR HIGH-VOLTAGE CIRCUIT |
Click here
HINT:
If the "Motor High-voltage Circuit" inspection results are normal, perform the next step.
| NEXT |
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