Toyota Avalon Service & Repair Manual: Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Below Threshold (P0D2D16,P0D2D17,P0D2D1F)

Toyota Avalon Service & Repair Manual / Engine / Hybrid / Battery Control / Motor Generator Control System / Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Below Threshold (P0D2D16,P0D2D17,P0D2D1F)

DESCRIPTION

The inverter contains a three-phase bridge circuit, which consists of 6 power transistors (IGBTs) each for the generator (MG1) and motor (MG2). The inverter converts high-voltage direct current from the HV battery into three-phase alternating current for the generator (MG1) and motor (MG2); it also converts three-phase alternating current supplied by generator (MG1) and motor (MG2) into direct current for the HV battery. The motor generator control ECU (MG ECU) controls the actuation of the power transistors (IGBTs). The inverter transmits information necessary for control, such as amperage and voltage, to the motor generator control ECU (MG ECU).

The motor generator control ECU (MG ECU) uses an inverter voltage sensor, which is built into the inverter, to detect boosted high voltage (VH) and allow control of the voltage boost.

The inverter voltage sensor outputs voltage that fluctuates between 0 to 5 V according to changes in VH.

The motor generator ECU monitors the inverter voltage sensor and detects the following malfunctions.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0D2D16

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

Inverter voltage (VH) signal is stuck low:

DTC stored when the VH sensor signal is excessively low.

(1 trip detection logic)

Inverter with converter assembly

Comes on

Master Warning Light:

Comes on

P0D2D17

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

Inverter voltage (VH) signal is stuck high:

DTC stored when the VH sensor signal is excessively high.

(1 trip detection logic)

Inverter with converter assembly

Comes on

Master Warning Light:

Comes on

P0D2D1F

Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Intermittent

An excessively high or low voltage signal is output from the inverter voltage sensor (VH) when DTC P0C7917, P0D3319, P1C5D19 or P1C5F19 is stored.

(1 trip detection logic)

Inverter with converter assembly

Does not come on

Master Warning Light:

Does not come on

Related Data List

DTC No.

Data List

P0D2D16

P0D2D17

P0D2D1F

VH Voltage

MONITOR DESCRIPTION

The motor generator control ECU monitors the inverter voltage (VH) sensor circuit. If the motor generator control ECU detects an open or short in the VH sensor circuit, the ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY

Related DTCs

P0D2F (INF P0D2D16): Drive Motor "A" Inverter Voltage Sensor Range check (Low voltage)

P0D30 (INF P0D2D17): Drive Motor "A" Inverter Voltage Sensor Range check (High voltage)

Required sensors/components

Motor inverter voltage 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 P0D2F (INF P0D2D16) is not detected

DTC P0D30 (INF P0D2D17) 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) and wait for 5 seconds or more. [*1]

    HINT:

    [*1]: Normal judgment procedure.

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

  7. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  8. 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.

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click here

NEXT

COMPLETED

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