Both Manual and Automatic Operation of Active Rear Wing does not Operate [03/2017 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Customize Setting / Others.
5. Check that the active rear wing system customize setting "Active Rear Wing Control" is set to "Permission".

   Others 

   Tester Display	Description	Default	Setting	ECU
   Active Rear Wing Control	Active rear wing system permission/prohibition setting	Prohibition	01:Permission, 10:Prohibition	Spoiler control ECU assembly

   OK

   The active rear wing system customize setting "Active Rear Wing Control" is set to "Permission".

   Result

   Proceed to
   OK
   NG

Result: 

NG 

PERFORM CUSTOMIZE FUNCTION (Change setting to "Permission"). Refer to  CUSTOMIZE PARAMETERS [03/2017 - ] 

Result: 

OK 

See step  2

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [03/2017 - ]

   Body Electrical > Active Rear Wing > Trouble Codes 

   OK

   DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2017 - ] 

Result: 

OK 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Active Rear Wing / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Active Rear Wing > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Vehicle Speed Information	Vehicle speed signal reception condition	OK or NG	OK: Vehicle speed signal is valid NG: Vehicle speed signal is invalid	-

   Body Electrical > Active Rear Wing > Data List 

   Tester Display
   Vehicle Speed Information

   Result

   Result	Proceed to
   OK is displayed on the Techstream	A
   NG is displayed on the Techstream	B

Result: 

B 

GO TO ELECTRONIC CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - ] 

Result: 

A 

See step  4

1. Disconnect the X79 spoiler control ECU assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Spoiler Control ECU Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X79-1 (GND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Disconnect the X79 spoiler control ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Spoiler Control ECU Assembly)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   X79-18 (ECUB) - X79-1 (GND)	Always	11 to 14 V
   X79-19 (B) - X79-1 (GND)	Always	11 to 14 V
   X79-16 (IG) - X79-1 (GND)	Engine switch off	Below 1 V
   X79-16 (IG) - X79-1 (GND)	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Remove the rear spoiler motor assembly.

   Refer to DISASSEMBLY [03/2017 - ]

2. Inspect the rear spoiler motor assembly.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE REAR SPOILER MOTOR ASSEMBLY. Refer to  DISASSEMBLY [03/2017 - ] 

Result: 

OK 

See step  7

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X79-6 (RSM+) - d2-1 (U)	Always	Below 1 Ω
   X79-6 (RSM+) or d2-1 (U) - Body ground	Always	10 kΩ or higher
   X79-7 (RSM-) - d2-5 (D)	Always	Below 1 Ω
   X79-7 (RSM-) or d2-5 (D) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SPOILER CONTROL ECU ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023]  , or refer to  REMOVAL [05/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR