Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B4ED
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2021]
Title: A25A-FXS (ENGINE CONTROL): SFI SYSTEM: P05A27E,P05A27F; Active Grille Air Shutter "A" Actuator Stuck On; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]

DTC

P05A27E

Active Grille Air Shutter "A" Actuator Stuck On

DTC

P05A27F

Active Grille Air Shutter "A" Actuator Stuck Off

DESCRIPTION

Refer to DTC P059F73.

Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: P059F73,P05A072; Active Grille Air Shutter "A" Actuator Stuck Closed+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P05A27E

Active Grille Air Shutter "A" Actuator Stuck On

The following condition is met and the ECM receives a malfunction signal 17 times* (2 trip detection logic):

  • Grille shutter opening operation is performed for 11 seconds or more and the ECM receives a malfunction signal once or more.
  • Radiator shutter sub-assembly
  • Swing grille actuator assembly

Comes on

DTC stored

SAE Code: P05A3

P05A27F

Active Grille Air Shutter "A" Actuator Stuck Off

The following condition is met and the ECM receives a malfunction signal 17 times* (2 trip detection logic):

  • Grille shutter closing operation is performed for 11 seconds or more and the ECM receives a malfunction signal once or more.
  • Radiator shutter sub-assembly
  • Swing grille actuator assembly

Comes on

DTC stored

SAE Code: P05A3

HINT:

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU (swing grille actuator assembly) the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.

MONITOR DESCRIPTION

If the grille shutter ECU (swing grille actuator assembly) detects that the grille shutter motor (swing grille actuator assembly) is performing an open or close operation for longer than the threshold, it will output a malfunction signal to the ECM and the ECM will store a DTC.

Detection Condition

DTC No.

Opening Operation

P05A27E (Active Grille Air Shutter "A" Actuator Stuck On)

Closing Operation

P05A27F (Active Grille Air Shutter "A" Actuator Stuck Off)

MONITOR STRATEGY

Related DTCs

P05A3: Active grille air shutter performance

Required Sensors/Components (Main)

Swing grille actuator assembly

Radiator shutter sub-assembly

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

17 times

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Case 1

Monitor runs whenever the following DTCs are not stored

None

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter close control

Operating

Case 2

Monitor runs whenever the following DTCs are not stored

None

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter open control

Operating

TYPICAL MALFUNCTION THRESHOLDS

Case 1: Active grille air shutter motor stuck off malfunction is not detected in last power switch on (IG) cycle

Following condition is met

1 time or more

Time after active grille air shutter close control is operated

11 seconds or more

Case 1: Active grille air shutter motor stuck off malfunction is detected in last power switch on (IG) cycle

Following condition is met

1 time or more

Time after active grille air shutter close control is operated

11 seconds or more

Case 2: Active grille air shutter motor stuck on malfunction is not detected in last power switch on (IG) cycle

Following condition is met

1 time or more

Time after active grille air shutter open control is operated

11 seconds or more

Case 2: Active grille air shutter motor stuck on malfunction is detected in last power switch on (IG) cycle

Following condition is met

1 time or more

Time after active grille air shutter open control is operated

11 seconds or more

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the power switch off and wait for at least 30 seconds.
  6. Turn the power switch on (IG).
  7. Turn the Techstream on.
  8. Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.
  9. According to the display on the Techstream, change the grille shutter control mode from normal mode to maintenance mode.
  10. Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Closing Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.
  11. According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

    OK:

    "Normal" is displayed.

  12. Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Opening Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.
  13. According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

    OK:

    "Normal" is displayed.

CAUTION / NOTICE / HINT

NOTICE:

  • In order to ensure safety, before performing troubleshooting or removing the swing grille actuator assembly or radiator shutter sub-assembly, change the grille shutter control mode to maintenance mode.
  • Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.

    Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY 2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): VEHICLE CONTROL HISTORY

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): VEHICLE CONTROL HISTORY 2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): VEHICLE CONTROL HISTORY

HINT:

Read Freeze Frame Data using the Techstream. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

PERFORM UTILITY USING TECHSTREAM (GRILL SHUTTER CONTROL MODE SWITCHING)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.

Body Electrical > Grill Shutter > Utility

Tester Display

Grill Shutter Control Mode Switching

(e) According to the display on the Techstream, change the grille shutter control mode from normal mode to maintenance mode.

NEXT

2.

INSPECT GRILLE SHUTTER (FOREIGN MATTER AND ICE)

(a) Check the area around the shutters and the links of the grille shutter for foreign matter and ice.

OK:

No foreign matter or ice.

NG

GO TO STEP 8

OK

3.

PERFORM ACTIVE TEST USING TECHSTREAM (GRILLE SHUTTER OPERATION)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Closing Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

Body Electrical > Grill Shutter > Active Test

Active Test Display

Shutter Closing Operation Lock Detection

Data List Display

Shutter Operation Lock Detection Result for Active Test

(e) According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

OK:

"Normal" is displayed.

(f) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Opening Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

Body Electrical > Grill Shutter > Active Test

Active Test Display

Shutter Opening Operation Lock Detection

Data List Display

Shutter Operation Lock Detection Result for Active Test

(g) According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

OK:

"Normal" is displayed.

HINT:

When the value of Data List item Shutter Operation Lock Detection Result for Active Test is "Normal", it can be determined that the grille shutter system has returned to normal.

NG

GO TO STEP 6

OK

4.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(f) Turn the power switch off and wait for at least 30 seconds.

NEXT

5.

PERFORM UTILITY USING TECHSTREAM (GRILL SHUTTER CONTROL MODE SWITCHING)

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

(b) Turn the Techstream on.

(c) Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.

Body Electrical > Grill Shutter > Utility

Tester Display

Grill Shutter Control Mode Switching

(d) According to the display on the Techstream, change the grille shutter control mode from maintenance mode to normal mode.

(e) Check for DTCs and make sure that DTC B1333 is not output.

Body Electrical > Grill Shutter > Trouble Codes

NEXT

END

6.

PERFORM ACTIVE TEST USING TECHSTREAM (SWING GRILLE ACTUATOR ASSEMBLY OPERATION)

(a) Remove the radiator shutter sub-assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER: REMOVAL

(b) Remove the swing grille actuator assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER: DISASSEMBLY

(c) Reconnect the swing grille actuator assembly connector.

(d) Connect the Techstream to the DLC3.

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

(f) Turn the Techstream on.

(g) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Closing Operation Lock Detection.

Body Electrical > Grill Shutter > Active Test

Tester Display

Shutter Closing Operation Lock Detection

(h) According to the display on the Techstream, perform the Active Test and check the operation of the swing grille actuator assembly.

OK:

Operation is normal.

(i) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Opening Operation Lock Detection.

Body Electrical > Grill Shutter > Active Test

Tester Display

Shutter Opening Operation Lock Detection

(j) According to the display on the Techstream, perform the Active Test and check the operation of the swing grille actuator assembly.

OK:

Operation is normal.

HINT:

Perform "Grill Shutter Control Mode Switching and Grill Shutter Initialization" after replacing the swing grille actuator assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER SYSTEM: INITIALIZATION

NG

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

OK

7.

INSPECT RADIATOR SHUTTER SUB-ASSEMBLY (GRILLE SHUTTER OPERATION)

(a) Remove the radiator shutter sub-assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER: REMOVAL

(b) Remove the swing grille actuator assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER: DISASSEMBLY

(c) Manually open and close the radiator shutter sub-assembly and check that it moves smoothly.

OK:

Radiator shutter sub-assembly moves smoothly.

HINT:

Perform "Grill Shutter Control Mode Switching and Grill Shutter Initialization" after replacing the swing grille actuator assembly or radiator shutter sub-assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: GRILLE SHUTTER SYSTEM: INITIALIZATION

OK

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

NG

REPLACE RADIATOR SHUTTER SUB-ASSEMBLY

8.

REMOVE FOREIGN MATTER OR ICE (CLEAN GRILLE SHUTTER)

(a) Remove any foreign matter and/or ice from the area around the shutters and the links of the grille shutter.

NEXT

9.

PERFORM ACTIVE TEST USING TECHSTREAM (GRILLE SHUTTER OPERATION)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Closing Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

Body Electrical > Grill Shutter > Active Test

Active Test Display

Shutter Closing Operation Lock Detection

Data List Display

Shutter Operation Lock Detection Result for Active Test

(e) According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

OK:

"Normal" is displayed.

(f) Enter the following menus: Body Electrical / Grill Shutter / Active Test / Shutter Opening Operation Lock Detection / Data List / Shutter Operation Lock Detection Result for Active Test.

Body Electrical > Grill Shutter > Active Test

Active Test Display

Shutter Opening Operation Lock Detection

Data List Display

Shutter Operation Lock Detection Result for Active Test

(g) According to the display on the Techstream, perform the Active Test and read the value of Data List item Shutter Operation Lock Detection Result for Active Test.

OK:

"Normal" is displayed.

HINT:

When the value of Data List item Shutter Operation Lock Detection Result for Active Test is "Normal", it can be determined that the grille shutter system has returned to normal.

NG

GO TO STEP 6

OK

10.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(f) Turn the power switch off and wait for at least 30 seconds.

NEXT

11.

PERFORM UTILITY USING TECHSTREAM (GRILL SHUTTER CONTROL MODE SWITCHING)

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

(b) Turn the Techstream on.

(c) Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Control Mode Switching.

Body Electrical > Grill Shutter > Utility

Tester Display

Grill Shutter Control Mode Switching

(d) According to the display on the Techstream, change the grille shutter control mode from maintenance mode to normal mode.

(e) Check for DTCs and make sure that DTC B1333 is not output.

Body Electrical > Grill Shutter > Trouble Codes

NEXT

END