Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Drive Motor A" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure" (P0BE528,P0BE928,P0BED28)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Motor Generator Control System / Drive Motor A" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure" (P0BE528,P0BE928,P0BED28)

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

The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors the 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

P0BE528

Drive Motor "A" Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

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 motor inverter is shutdown.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0BE6

P0BE928

Drive Motor "A" Phase V Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

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 motor inverter is shutdown.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0BEA

P0BED28

Drive Motor "A" Phase W Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

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 motor inverter is shutdown.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0BEE

MONITOR DESCRIPTION

If the motor generator control ECU detects a motor inverter current sensor U, V or W phase offset malfunction, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0BE6 (INF P0BE528): Offset malfunction

P0BEA (INF P0BE928): Offset malfunction

P0BEE (INF P0BED28): Offset malfunction

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 P0BE6 (INF P0BE528) is not detected

DTC P0BEA (INF P0BE928) is not detected

DTC P0BEE (INF P0BED28) 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

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

    Click here

  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. Turn the ignition switch to ON and wait for 5 seconds or more. [*1]
  4. 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.

  5. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  6. 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:

  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Click here

  • 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:

  • P0BE528, P0BE928 or P0BED28 may be output as a result of the malfunction indicated by the DTCs in table below.
    1. The chart above is listed in inspection order of priority.
    2. 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

P0A1A47

Generator Control Module Watchdog / Safety MC Failure

P0A1A49

Control Module Internal Electronic Failure

P0A1B47

Drive Motor "A" Control Module Watchdog / Safety MC 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

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

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

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

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

P0D2D16

Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold

P0D2D17

Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold

P1CAD49

Drive Motor "A" Position Sensor Internal Electronic Failure

P1CB038

Drive Motor "A" Position Sensor REF Signal Frequency Incorrect

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
A

REPLACE INVERTER WITH CONVERTER ASSEMBLY

B

CONNECT SECURELY
C

REPAIR OR REPLACE HARNESS OR CONNECTOR

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