Grille Shutter does not Operate [10/2021 - ]: Procedure

1. According to the display on the GTS, change the grille shutter control mode from normal mode to maintenance mode.

   Powertrain > Engine > Utility 

   Tester Display
   Switch Grille Shutter Control Mode

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Check the area around the shutters and the links of the grille shutter for foreign matter and ice.

   OK

   The radiator shutter sub-assembly is free of foreign matter and ice.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  10

Result: 

OK 

See step  3

1. Remove the radiator shutter assembly.

   Refer to REMOVAL [10/2021 - ]

2. While using fingers to pinch the fin at the location shown in the illustration, fully open and close the radiator shutter assembly manually and check that it moves smoothly.

   HINT: 

   If the fin is pinched with fingers far from the swing grille actuator assembly, the function may not be able to be inspected correctly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Swing Grille Actuator Assembly

   *b

   Fin

   OK

   Radiator shutter sub-assembly moves smoothly.

3. Install the radiator shutter assembly.

   Refer to INSTALLATION [10/2021 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RADIATOR SHUTTER ASSEMBLY 

Refer to REMOVAL [10/2021 - ]

Result: 

OK 

See step  4

1. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

2. Turn the ignition switch off and wait for at least 30 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check for DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output.	OK
   DTCs are output.	NG

Result: 

NG 

GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) 

Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 10/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 11/2023] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - 11/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2024 - ]

Result: 

OK 

See step  6

1. Disconnect the X1 swing grille actuator assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Swing Grille Actuator Assembly)

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   X1-1 (+B) - Body ground	Ignition switch ON	11 to 14 V

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X1-3 (GND) - Body ground	Always	Below 1 Ω

4. Connect the X1 swing grille actuator assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  8

Result: 

OK 

See step  7

1. According to the display on the GTS, change the grille shutter control mode from maintenance mode to normal mode.

   Powertrain > Engine > Utility 

   Tester Display
   Switch Grille Shutter Control Mode

2. Read the value displayed on the GTS.

   Powertrain > Engine > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Grille Shutter Control Mode	Grille shutter control mode status	Normal or Maintenance	Normal: Normal mode Maintenance: Maintenance mode	-

   Powertrain > Engine > Data List 

   Tester Display
   Grille Shutter Control Mode

   OK

   Normal is displayed.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END 

HINT: 

Operation temporarily abnormal due to fail-safe (abnormal temperature).

1. Remove the EFI-MAIN NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly (EFI-MAIN NO. 1 Relay Holder)

2. Disconnect the X1 swing grille actuator assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X1-1 (+B) - No. 1 engine room relay block and No. 1 junction block assembly EFI-MAIN NO. 1 relay terminal 5	Always	Below 1 Ω
   X1-1 (+B) or No. 1 engine room relay block and No. 1 junction block assembly EFI-MAIN NO. 1 relay terminal 5 - Body ground	Always	10 kΩ or higher

4. Install the EFI-MAIN NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
5. Connect the X1 swing grille actuator assembly connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  9

1. Check the ECM power source circuit.

   Refer to ECM Power Source Circuit [12/2019 - 11/2023] , or refer to ECM Power Source Circuit [11/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7