Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Boosting Converter Voltage Sensor "A" Voltage Out of Range (P0E311C)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / Hybrid / Battery Control / Hybrid Control System / Boosting Converter Voltage Sensor "A" Voltage Out of Range (P0E311C)

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

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 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 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

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

    Click here

  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 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 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)

(a) Connect the Techstream to the DLC3.

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

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

(d) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes Powertrain > Motor Generator > 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

Malfunction Content

System

Relevant DTC

Microcomputer malfunction

Hybrid control system

P0A1B49

Drive Motor "A" Control Module Internal Electronic Failure

P0AFC00

Hybrid/EV Battery Sensor Module

P0AFC96

Hybrid/EV Battery Sensor Module Component Internal Failure

P060647

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

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

Power source circuit malfunction

Hybrid control system

P0AFC16

Hybrid/EV Battery Sensor Module Circuit Voltage Below Threshold

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

U029A87

Lost Communication with Hybrid/EV Battery Sensor Module Missing Message

Sensor and actuator circuit malfunction

Hybrid control system

P0B3B14

Hybrid/EV Battery Voltage Sensor "A" Circuit Short to Ground or Open

P0B4014

Hybrid/EV Battery Voltage Sensor "B" Circuit Short to Ground or Open

P0B4514

Hybrid/EV Battery Voltage Sensor "C" Circuit Short to Ground or Open

P0B4A14

Hybrid/EV Battery Voltage Sensor "D" Circuit Short to Ground or Open

P0B4F14

Hybrid/EV Battery Voltage Sensor "E" Circuit Short to Ground or Open

P0B5414

Hybrid/EV Battery Voltage Sensor "F" Circuit Short to Ground or Open

P0B5914

Hybrid/EV Battery Voltage Sensor "G" Circuit Short to Ground or Open

P0B5E14

Hybrid/EV Battery Voltage Sensor "H" Circuit Short to Ground or Open

P0B6314

Hybrid/EV Battery Voltage Sensor "I" Circuit Short to Ground or Open

P0B6814

Hybrid/EV Battery Voltage Sensor "J" Circuit Short to Ground or Open

P0B6D14

Hybrid/EV Battery Voltage Sensor "K" Circuit Short to Ground or Open

P0B7214

Hybrid/EV Battery Voltage Sensor "L" Circuit Short to Ground or Open

P308A13

Hybrid/EV Battery Voltage Sensor All Circuit Open

P0AFC62

Hybrid/EV Battery Sensor Module Signal Compare Failure

P308A12

Hybrid/EV Battery Voltage Sensor All Circuit Short to Auxiliary Battery

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

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

C

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM)

    Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range (P0D2D1C)

    Hybrid/EV Battery Stack 1 Delta SOC High (P1A8000,P1AD01B)

    See More:

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