Toyota Avalon Service & Repair Manual: Active Grille Air Shutter "A" Circuit Short to Ground (P05A211,P05A212,P05A213)

Toyota Avalon Service & Repair Manual / Engine / A25a-fxs Engine Control / Sfi System / Active Grille Air Shutter "A" Circuit Short to Ground (P05A211,P05A212,P05A213)

DESCRIPTION

Refer to DTC P059F73.

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DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P05A211

Active Grille Air Shutter "A" Circuit Short to Ground

Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):

  • Short to ground detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Short to ground detected in the motor drive circuit when a grille shutter operation is requested.

Swing grille actuator assembly

Comes on

DTC stored

SAE Code: P05A5

P05A212

Active Grille Air Shutter "A" Circuit Short to Battery

Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):

  • Short to +B detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Short to +B detected in the motor drive circuit when a grille shutter operation is requested.

Swing grille actuator assembly

Comes on

DTC stored

SAE Code: P05A4

P05A213

Active Grille Air Shutter "A" Circuit Open

Either of the following conditions is met and the ECM receives a malfunction signal 17 times* (1 trip detection logic):

  • Open detected in the grille shutter motor (swing grille actuator assembly) when a grille shutter operation is requested.
  • Open detected in the grille shutter motor circuit when a grille shutter operation is requested.
  • Internal malfunction detected in the grille shutter ECU (swing grille actuator assembly) when a grille shutter operation is requested.

Swing grille actuator assembly

Comes on

DTC stored

SAE Code: P05A2

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

  1. Grille Shutter Motor (Swing Grille Actuator Assembly) Malfunction

    If the grille shutter ECU (swing grille actuator assembly) detects a malfunction in the grille shutter motor drive circuit when a grille shutter operation is requested, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    Detection Condition

    DTC No.

    Short to Ground

    P05A211 (Active Grille Air Shutter "A" Circuit Short to Ground)

    Short to +B

    P05A212 (Active Grille Air Shutter "A" Circuit Short to Battery)

    Open

    P05A213 (Active Grille Air Shutter "A" Circuit Open)

  2. Grille Shutter ECU Internal Malfunction

    If the grille shutter ECU detects an internal malfunction, it will output a malfunction signal to the ECM and the ECM will store a DTC.

    Detection Condition

    DTC No.

    EEPROM Malfunction

    P05A213 (Active Grille Air Shutter "A" Circuit Open)

    Analog/Digital Conversion Malfunction

MONITOR STRATEGY

Related DTCs

P05A2: Active grille air shutter motor drive MOSFET open monitor

P05A2: Active grille air shutter control module performance

P05A4: Active grille air shutter motor drive MOSFET short monitor high voltage

P05A5: Active grille air shutter motor drive MOSFET short monitor low voltage

Required Sensors/Components (Main)

Swing grille actuator assembly

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

17 times

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 1)

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a). Command to close active grille air shutter

On

(b). Active grille air shutter close control

Not operating

2. Both of the following conditions are met

(c) and (d)

(c). Command to open active grille air shutter

On

(d). Active grille air shutter open control

Not operating

Active grille air shutter control re-try operation

Off

Reverse motor control during shutter position check

Not operating

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter motor drive MOSFET 1

On

Active grille air shutter motor drive MOSFET 2

Off

Active grille air shutter motor drive MOSFET 3

Off

Active grille air shutter motor drive MOSFET 4

Off

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 2)

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a). Command to close active grille air shutter

On

(b). Active grille air shutter close control

Not operating

2. Both of the following conditions are met

(c) and (d)

(c). Command to open active grille air shutter

On

(d). Active grille air shutter open control

Not operating

Active grille air shutter control re-try operation

Off

Reverse motor control during shutter position check

Not operating

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter motor drive MOSFET 1

Off

Active grille air shutter motor drive MOSFET 2

On

Active grille air shutter motor drive MOSFET 3

Off

Active grille air shutter motor drive MOSFET 4

Off

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 3)

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a). Command to close active grille air shutter

On

(b). Active grille air shutter close control

Not operating

2. Both of the following conditions are met

(c) and (d)

(c). Command to open active grille air shutter

On

(d). Active grille air shutter open control

Not operating

Active grille air shutter control re-try operation

Off

Reverse motor control during shutter position check

Not operating

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter motor drive MOSFET 1

Off

Active grille air shutter motor drive MOSFET 2

Off

Active grille air shutter motor drive MOSFET 3

On

Active grille air shutter motor drive MOSFET 4

Off

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 4)

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a). Command to close active grille air shutter

On

(b). Active grille air shutter close control

Not operating

2. Both of the following conditions are met

(c) and (d)

(c). Command to open active grille air shutter

On

(d). Active grille air shutter open control

Not operating

Active grille air shutter control re-try operation

Off

Reverse motor control during shutter position check

Not operating

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter motor drive MOSFET 1

Off

Active grille air shutter motor drive MOSFET 2

Off

Active grille air shutter motor drive MOSFET 3

Off

Active grille air shutter motor drive MOSFET 4

On

P05A2: Active Grille Air Shutter Control Module Performance

Monitor runs whenever the following DTCs are not stored

None

P05A4, P05A5

Monitor runs whenever the following DTCs are not stored

None

All of the following conditions are met

-

Either of the following conditions is met

1 or 2

1. Both of the following conditions are met

(a) and (b)

(a). Command to close active grille air shutter

On

(b). Active grille air shutter close control

Not operating

2. Both of the following conditions are met

(c) and (d)

(c). Command to open active grille air shutter

On

(d). Active grille air shutter open control

Not operating

Active grille air shutter control re-try operation

Off

Reverse motor control during shutter position check

Not operating

Auxiliary battery voltage

10.5 to 16 V

Active grille air shutter motor drive MOSFET 1

Off

Active grille air shutter motor drive MOSFET 2

Off

Active grille air shutter motor drive MOSFET 3

Off

Active grille air shutter motor drive MOSFET 4

Off

TYPICAL MALFUNCTION THRESHOLDS

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 1 and 2)

Active grille air shutter motor voltage

Less than threshold value

P05A2: Active Grille Air Shutter Motor Drive MOSFET Open Monitor (Case 3 and 4)

Active grille air shutter motor voltage

Higher than threshold value

P05A2: Active Grille Air Shutter Control Module Performance

Either of the following conditions is met

1 or 2

1. Abnormal EEPROM access

Detected

2. A/D conversion processing

Not completed

P05A4

Active grille air shutter motor voltage

Higher than threshold value

P05A5

Active grille air shutter motor voltage

Less than threshold value

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

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.

REPLACE SWING GRILLE ACTUATOR ASSEMBLY

(a) Replace the swing grille actuator assembly.

Click here

NEXT

3.

PERFORM UTILITY USING TECHSTREAM (GRILL SHUTTER CONTROL MODE SWITCHING AND GRILL SHUTTER INITIALIZATION)

HINT:

When changing the grille shutter control mode and/or performing initialization by driving the vehicle, the grille shutter control mode can only be changed and initialization can only be performed if the grille shutter system is in maintenance mode.

Click here

(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 maintenance mode to normal mode.

(f) Enter the following menus: Body Electrical / Grill Shutter / Utility / Grill Shutter Initialization.

Body Electrical > Grill Shutter > Utility

Tester Display

Grill Shutter Initialization

(g) According to the display on the Techstream, perform Grill Shutter Initialization.

(h) Enter the following menus: Body Electrical / Grill Shutter / Data List / Shutter Control State and Shutter Initialization.

Body Electrical > Grill Shutter > Data List

Tester Display

Shutter Control State

Shutter Initialization

(i) According to the display on the Techstream, read the Data List and check that the value of Shutter Control State is "Normal" and Shutter Initialization is "Complete".

NEXT

END

    Active Grille Air Shutter "A" Actuator Slipping (P05A074)

    Active Grille Air Shutter "B" Circuit Short to Battery (P05B112,P05B114,P05B131)

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