Fuel Lid Opener does not Operate [08/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Active Test.
5. Perform the Active Test according to the display on the Techstream.

   Body Electrical > Main Body > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Fuel Lid Opener	Fuel lid lock with motor assembly	OFF/ON	-

   Body Electrical > Main Body > Active Test 

   Tester Display
   Fuel Lid Opener

   OK

   The fuel lid lock with motor assembly operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  5

Result: 

OK 

See step  2

1. Enter the following menus: Body Electrical / Main Body / Data List.
2. Read the Data List according to the display on the Techstream.

   Body Electrical > Main Body > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Fuel Lid Opener Switch	Fuel lid opener switch status	OFF or ON	OFF: Fuel lid opener switch not pushed ON: Fuel lid opener switch pushed	-

   OK

   The Techstream display changes correctly in response to the operation of the fuel lid opener switch.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

See step  3

1. Remove the fuel lid opener switch.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the fuel lid opener switch.

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FUEL LID OPENER SWITCH 

Refer to REMOVAL [03/2017 - ]

Result: 

OK 

See step  4

1. Disconnect the K52 main body ECU (multiplex network body ECU) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K38-5 (IG) - K52-15 (FUSW)	Always	Below 1 Ω
   K38-2 (E) - Body ground	Always	Below 1 Ω
   K38-5 (IG) or K52-15 (FUSW) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Remove the fuel lid lock with motor assembly.

   Refer to REMOVAL [03/2017 - ]

2. Inspect the fuel lid lock with motor assembly (motor operation).

   Refer to INSPECTION [03/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FUEL LID LOCK WITH MOTOR ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  6

1. Disconnect the 3C instrument panel junction block assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3C-7 - Body ground	Always	11 to 14 V
   3C-30 - Body ground	Always	11 to 14 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Instrument Panel Junction Block Assembly)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Disconnect the 3A instrument panel junction block assembly connector.
2. Disconnect the K51 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3A-19 - K51-24 (FUEL)	Always	Below 1 Ω
   3A-19 or K51-24 (FUEL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  8

1. Disconnect the 3D instrument panel junction block assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3D-28 - W4-1 (B)	Always	Below 1 Ω
   3D-28 or W4-1 (B) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  9

1. Replace the instrument panel junction block assembly.

   Refer to REMOVAL [06/2017 - 10/2020] , or refer to REMOVAL [10/2020 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  10

1. Check that the fuel lid can be opened.

   Refer to OPERATION CHECK [08/2018 - ] 

   OK

   The fuel lid can be opened.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ]