Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001RHBY
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): P0E311C; Boosting Converter Voltage Sensor "A" Voltage Out of Range; 2021 - 2022 MY Avalon HV [08/2020 -        ]

DTC

P0E311C

Boosting Converter Voltage Sensor "A" Voltage Out of Range

DTC SUMMARY

MALFUNCTION DESCRIPTION

The hybrid vehicle control ECU detects a VL sensor malfunction.

The cause of this malfunction may be one of the following:

Inverter voltage (VL) sensor internal circuit malfunction

  • Voltage sensor malfunction
  • Motor generator control ECU (MG ECU) malfunction
  • Communication (wire harness) malfunction

High voltage system malfunction

  • Inverter with converter assembly malfunction

DESCRIPTION

Refer to the description for DTC P0E3116.

Click here 2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): P0E3116,P0E3117,P0E311F; DC/DC Converter Voltage Sensor "A"(VL) Circuit Voltage Below Threshold+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0E311C

Boosting Converter Voltage Sensor "A" Voltage Out of Range

Boost converter voltage (VL) sensor performance malfunction:

When not boosting, difference between "VL-Voltage before Boosting" and "Hybrid/EV Battery Voltage" is large and difference between "VL-Voltage before Boosting" and "VH-Voltage after Boosting" is large.

(1 trip detection logic)

Inverter with converter assembly

Comes on

Master Warning Light:

Comes on

Related Data List

DTC No.

Data List

P0E311C

  • VL-Voltage before Boosting
  • Hybrid/EV Battery Voltage
  • VH-Voltage after Boosting
  • Boost Ratio

MONITOR DESCRIPTION

The hybrid vehicle control ECU monitors the boost converter voltage sensor signal. If the hybrid vehicle control ECU detects an abnormality in the sensor signal, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0E32 (INF P0E311C): DC/DC Converter Voltage Sensor "A" Range/Performance

Required sensors/components

Boost converter

Frequency of operation

-

Duration

-

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

Hybrid vehicle control ECU

DTC P0E32 (INF P0E311C) 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 2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): UTILITY

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

    Click here 2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. Turn the power switch on (READY). [*1]
  7. With the shift lever in D, depress both the accelerator pedal and brake pedal at the same time to raise the "Hybrid/EV Battery SOC" to a sufficient level. [*2]
  8. Move the shift lever to P, check that the engine is stopped and move the shift lever to N. [*3]
  9. Set the A/C for maximum cooling. [*4]
  10. Leave the vehicle for a few minutes. [*5]

    HINT:

    • When the accelerator pedal is not depressed with the power switch on (READY) and shift lever in P, if "VL-Voltage before Boosting" and the "Hybrid/EV Battery Voltage" is approximately the same after repair, the condition is judged as normal.
    • [*1] to [*5] : Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  11. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  12. 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 or N/A, perform the normal judgment procedure again.

PROCEDURE

1.

CHECK DTC OUTPUT (HYBRID CONTROL, MOTOR GENERATOR, HV BATTERY)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control, Motor Generator, HV Battery / Trouble Codes.

(d) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes

Powertrain > Motor Generator > Trouble Codes

Powertrain > HV Battery > Trouble Codes

Result

Proceed to

P0E311C only is output, or DTCs except the ones in the table below are also output.

A

DTCs of hybrid control system in the tables below are output.

B

DTCs of motor generator control system in the tables below are output.

C

DTCs of hybrid battery system in the tables below are output.

D

Malfunction Content

System

Relevant DTC

Microcomputer malfunction

Hybrid control system

P0A1B49

Drive Motor "A" Control Module Internal Electronic Failure

P060647

Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure

P060B49

Hybrid/EV Powertrain Control Module A/D Processing Internal Electronic Failure

P060687

Hybrid/EV Powertrain Control Module Processor to Monitoring Processor Missing Message

P060A47

Hybrid/EV Powertrain Control Module Monitoring Processor Watchdog / Safety MCU Failure

P060A87

Hybrid/EV Powertrain Control Module Processor from Monitoring Processor Missing Message

Motor generator control system

P0A1B1F

Generator Control Module Circuit Intermittent

P0A1A47

Generator Control Module Watchdog / Safety μC Failure

P0A1A49

Generator 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

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 battery system

P060B49

Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure

P060687

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message

P060A47

Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure

P060A87

Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message

P060B16

Hybrid/EV Battery Energy Control Module A/D Processing Circuit Voltage Below Threshold

P0E2D00

Hybrid/EV Battery Energy Control Module Hybrid/EV Battery Monitor Performance

Power source circuit malfunction

Motor generator control system

P06D61C

Generator Control Module Offset Power Circuit Voltage Out of Range

Communication system malfunction

Hybrid control system

P312387

Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message

U011187

Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message

Sensor and actuator circuit malfunction

Hybrid battery system

P301A1C

Hybrid Battery Stack 1 Cell Voltage Detection Voltage Out of Range

P1A001C

Hybrid Battery Stack 2 Cell Voltage Detection Voltage Out of Range

P1AFD1C

Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range

System malfunction

Motor generator control system

P0D2D16

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

P0D2D17

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

P0E3116

DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Below Threshold

P0E3117

DC/DC Converter Voltage Sensor "A" (VL) Circuit Voltage Above Threshold

HINT:

  • P0E311C may be output as a result of the malfunction indicated by the DTCs above.
    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.)

(e) Turn the power switch off.

A

REPLACE INVERTER WITH CONVERTER ASSEMBLY 2021 MY Avalon HV [08/2020 - 08/2021]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER: REMOVAL 2022 MY Avalon HV [08/2021 -        ]; HYBRID / BATTERY CONTROL: INVERTER WITH CONVERTER: REMOVAL

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 2021 MY Avalon HV [08/2020 - 08/2021]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Avalon HV [08/2021 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART

C

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) 2021 MY Avalon HV [08/2020 - 08/2021]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Avalon HV [08/2021 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): DIAGNOSTIC TROUBLE CODE CHART

D

GO TO DTC CHART (HYBRID BATTERY SYSTEM)