Fuel Lid Opener System Operation Message Display Malfunction [04/2018 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A19 ECM connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A19-41 (LSTM) - Body ground	Always	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  3

Result: 

OK 

See step  2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the A19 ECM connector.
2. Remove the combination meter assembly with the connector(s) still connected.
3. Operate the fuel lid opener switch.
4. Check the signal waveform according to the condition(s) in the table below.
   1. Waveform 1:

      Item	Condition
      Tester Connection	G16-34 (LST1) - Body ground
      Tool setting	5 V/DIV., 20 ms./DIV.
      Condition	"Ready to Refuel" displayed on multi-information display

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   2. Waveform 2:

      Item	Condition
      Tester Connection	G16-34 (LST1) - Body ground
      Tool setting	5 V/DIV., 20 ms./DIV.
      Condition	"Close Fuel Lid" displayed on multi-information display

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      This waveform is output when the fuel lid opener switch is operated if the fuel lid is open and any of the following conditions are met:

      • The vehicle has been driven for 1 km (0.6 mile) or more at a speed of 50 km/h (31 mph) or more.
      • 30 minutes or more have elapsed since the fuel lid opener switch was operated.

   OK

   All of the waveforms are output normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

REPLACE ECM. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

1. Disconnect the G16 combination meter assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A19-41 (LSTM) - G16-34 (LST1)	Always	Below 1 Ω
   A19-41 (LSTM) or G16-34 (LST1) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR