Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Active Grille Air Shutter "A" Actuator Stuck On (P05A27E,P05A27F)

DESCRIPTION

Refer to DTC P059F73.

Click here

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.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

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

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

  Click here

• 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

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

(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.

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

NEXT

(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

(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.

(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.

(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

(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.

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

NEXT

(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.

(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.

NEXT

END

(a) Remove the radiator shutter sub-assembly.

Click here

(b) Remove the swing grille actuator assembly.

Click here

(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.

(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.

(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

NG

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

OK

(a) Remove the radiator shutter sub-assembly.

Click here

(b) Remove the swing grille actuator assembly.

Click here

(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

OK

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

NG

REPLACE RADIATOR SHUTTER SUB-ASSEMBLY

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

NEXT

(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.

(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.

(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

(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.

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

NEXT

(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.

(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.

NEXT

END