Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026QHS
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): P0BF112,...,P0BF91F; Drive Motor "B" Phase U Current Sensor Circuit Short to Battery; 2023 - 2025 MY Corolla HV [09/2022 -        ]

DTC

P0BF112

Drive Motor "B" Phase U Current Sensor Circuit Short to Battery

DTC

P0BF114

Drive Motor "B" Phase U Current Sensor Circuit Short to Ground or Open

DTC

P0BF11F

Drive Motor "B" Phase U Current Sensor Circuit Intermittent

DTC

P0BF512

Drive Motor "B" Phase V Current Sensor Circuit Short to Battery

DTC

P0BF514

Drive Motor "B" Phase V Current Sensor Circuit Short to Ground or Open

DTC

P0BF51F

Drive Motor "B" Phase V Current Sensor Circuit Intermittent

DTC

P0BF912

Drive Motor "B" Phase W Current Sensor Circuit Short to Battery

DTC

P0BF914

Drive Motor "B" Phase W Current Sensor Circuit Short to Ground or Open

DTC

P0BF91F

Drive Motor "B" Phase 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:

Inverter internal malfunction

  • Inverter with converter assembly internal circuit malfunction

Inverter low-voltage circuit malfunction

  • The connectors are not connected properly

DESCRIPTION

The motor generator control ECU (MG ECU), which is built into the 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

P0BF112

Drive Motor "B" Phase U Current Sensor Circuit Short to Battery

Malfunction in rear motor inverter current sensor (phase U main sensor) (Short to +B)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BF4

P0BF114

Drive Motor "B" Phase U Current Sensor Circuit Short to Ground or Open

Malfunction in rear motor inverter current sensor (phase U main sensor) (Open or short to ground)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BF3

P0BF11F

Drive Motor "B" Phase U Current Sensor Circuit Intermittent

Short to +B, open or short to ground detected in rear motor inverter current sensor (phase U main sensor) when DTC P0C7917, P0E5717, P0D3319, P1C5D19, P1C5F19 or P1C5E19 is stored.

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Does not come on

Master Warning:

Does not come on

SAE Code:

P1C43

P0BF512

Drive Motor "B" Phase V Current Sensor Circuit Short to Battery

Malfunction in rear motor inverter current sensor (phase V main sensor) (Short to +B)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BF8

P0BF514

Drive Motor "B" Phase V Current Sensor Circuit Short to Ground or Open

Malfunction in rear motor inverter current sensor (phase V main sensor) (Open or short to ground)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BF7

P0BF51F

Drive Motor "B" Phase V Current Sensor Circuit Intermittent

Short to +B, open or short to ground detected in rear motor inverter current sensor (phase V main sensor) when DTC P0C7917, P0E5717, P0D3319, P1C5D19, P1C5F19 or P1C5E19 is stored.

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Does not come on

Master Warning:

Does not come on

SAE Code:

P1C44

P0BF912

Drive Motor "B" Phase W Current Sensor Circuit Short to Battery

Malfunction in rear motor inverter current sensor (phase W main sensor) (Short to +B)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BFC

P0BF914

Drive Motor "B" Phase W Current Sensor Circuit Short to Ground or Open

Malfunction in rear motor inverter current sensor (phase W main sensor) (Open or short to ground)

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Comes on

Master Warning:

Comes on

SAE Code:

P0BFB

P0BF91F

Drive Motor "B" Phase W Current Sensor Circuit Intermittent

Short to +B, open or short to ground detected in rear motor inverter current sensor (phase W main sensor) when DTC P0C7917, P0E5717, P0D3319, P1C5D19, P1C5F19 or P1C5E19 is stored.

(1 trip detection logic)

  • Wire harness or connector
  • Inverter with converter assembly

Does not come on

Master Warning:

Does not come on

SAE Code:

P1C45

MONITOR DESCRIPTION

The motor generator control ECU monitors the rear motor inverter current sensor. If the motor generator control ECU detects a malfunction, it will illuminate MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0BF4 (INF P0BF112): Drive Motor "B" Phase U Current Sensor Range check (High voltage)

P0BF3 INF (P0BF114): Drive Motor "B" Phase U Current Sensor Range check (Low voltage)

P0BF8 (INF P0BF512): Drive Motor "B" Phase V Current Sensor Range check (High voltage)

P0BF7 (INF P0BF514): Drive Motor "B" Phase V Current Sensor Range check (Low voltage)

P0BFC (INF P0BF912): Drive Motor "B" Phase W Current Sensor Range check (High voltage)

P0BFB (INF P0BF914): Drive Motor "B" Phase W Current Sensor Range check (Low voltage)

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

Immediately

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 P0BF4 (INF P0BF112) is not detected

DTC P0BF3 INF (P0BF114) is not detected

DTC P0BF8 (INF P0BF512) is not detected

DTC P0BF7 (INF P0BF514) is not detected

DTC P0BFC (INF P0BF912) is not detected

DTC P0BFB (INF P0BF914) 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

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

    Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): 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. Turn the ignition switch to ON and wait for 5 seconds or more. [*1]
  4. Turn the ignition switch to ON (READY) and wait for 5 seconds or more. [*2]
  5. Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine. [*3]
  6. Drive the vehicle forward with the shift lever in D for 5 m (16 ft.) or more. [*4]
  7. Drive the vehicle backward with the shift lever in R for 5 m (16 ft.) or more. [*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.

  8. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  9. 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 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): PRECAUTION

NOTICE:

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

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; 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 here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART

HINT:

P0BF112, P0BF114, P0BF11F, P0BF512, P0BF514, P0BF51F, P0BF912, P0BF914 or P0BF91F may be output as a result of the malfunctions 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.)

Malfunction Content

System

Relevant DTC

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

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 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P033500,P033531; Crankshaft Position Sensor "A"+

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