Toyota Corolla Cross: Drive Motor "B" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure (P0BF128,P0BF528,P0BF928)
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:
Inverter internal malfunction- Current sensor malfunction
- Inverter with converter assembly internal circuit malfunction
DESCRIPTION
The motor generator control ECU (MG ECU), which is built into the inverter with inverter with converter assembly, monitors the rear motor inverter current sensor. These DTCs indicate the malfunction of current sensors and do not indicate a malfunction of the high-voltage system.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P0BF128 | Drive Motor "B" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure |
Rear motor inverter current sensor U phase offset malfunction: The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the rear motor inverter is shutdown. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P0BF2 |
|
P0BF528 | Drive Motor "B" Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure |
Rear motor inverter current sensor V phase offset malfunction: The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the rear motor inverter is shutdown. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P0BF6 |
|
P0BF928 | Drive Motor "B" Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure |
Rear motor inverter current sensor W phase offset malfunction: The absolute value of the current sensor output exceeds the threshold when current should not flow, such as when the rear motor inverter is shutdown. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P0BFA |
MONITOR DESCRIPTION
If the motor generator control ECU detects a rear motor inverter current sensor U, V or W phase offset malfunction, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs | P0BF2 (INF P0BF128): Offset malfunction P0BF6 (INF P0BF528): Offset malfunction P0BFA (INF P0BF928): Offset malfunction |
|
Required sensors/components | Rear motor inverter Phase U Current Sensor Rear motor inverter Phase V Current Sensor Rear 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 P0BF2 (INF P0BF128) is not detected DTC P0BF6 (INF P0BF528) is not detected DTC P0BFA (INF P0BF928) 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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- 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]
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.
CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
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NOTICE:
- After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
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- 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.
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HINT:
- P0BF128, P0BF528 or P0BF928 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 | 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 |
|
Malfunction Content | System |
Relevant DTC | |
|---|---|---|---|
|
Microcomputer malfunction |
Motor generator control system |
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 | ||
|
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 | ||
|
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 | ||
|
Hybrid control system | P0A1B49 |
Drive Motor "A" Control Module Internal Electronic Failure | |
|
Power source circuit malfunction |
Motor generator control system | P06B31C |
Drive Motor "B" Control Module Position Sensor REF Power Source Circuit Voltage Out of Range |
|
P19F91C | Drive Motor "B" 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 |
|
Sensor and actuator circuit malfunction |
Motor generator control system |
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 | ||
|
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 | ||
|
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 | ||
|
P0D2D16 | Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Below Threshold | ||
|
P0D2D17 | Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Above Threshold | ||
|
P1CAE49 | Drive Motor "B" Position Sensor Internal Electronic Failure | ||
|
P1CB138 | Drive Motor "B" Position Sensor REF Signal Frequency Incorrect | ||
|
System malfunction |
Motor generator control system |
P0A7973 | Drive Motor "B" 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 |
| A | .gif) | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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