Visual Mute Signal Circuit between Radio Receiver and Multi-display [06/2018 - 09/2022]: Procedure

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G22-11 (VMTI) - Body ground	Engine switch on (ACC) Screen display changing	3.5 V or higher → Below 1 V → 3.5 V or higher

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Multi-display Assembly)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 10/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [10/2019 - 08/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2021 - 09/2022] 

Result: 

NG 

See step  2

1. Disconnect the G22 multi-display assembly connector.
2. Disconnect the G3 radio receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G3-1 (VMTF) - G22-11 (VMTI)	Always	Below 1 Ω
   G3-1 (VMTF) or G22-11 (VMTI) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Replace the multi-display assembly with a new or known good one.

   Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - ]

2. Check that the screen display is normal.

   OK

   Screen display is normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 09/2022]