AVC-LAN Circuit [09/2015 - 08/2019]: Procedure

1. Remove the radio receiver assembly.

   Refer to REMOVAL [09/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *A	w/ Panoramic View Monitor System
   *a	Component without harness connected (Radio Receiver Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   45 (TX3+) - 46 (TX3-)	Always	60 to 80 Ω
   7 (TX1+) - 8 (TX1-)*	Always	60 to 80 Ω

   1. *: w/ Panoramic View Monitor System

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019] 

Result: 

OK 

See step  2

1. Disconnect the J50 radio receiver assembly connector.
2. Disconnect the J56 multi-display assembly connector (for 8 Inch Display).

   Disconnect the J56 accessory meter assembly connector (for 12.3 Inch Display).

3. Disconnect the J73 parking assist ECU connector (w/ Panoramic View Monitor System).
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J50-45 (TX3+) - J56-7 (TX+)	Always	Below 1 Ω
   J50-46 (TX3-) - J56-19 (TX-)	Always	Below 1 Ω
   J50-7 (TX1+) - J73-10 (TX+)*	Always	Below 1 Ω
   J50-8 (TX1-) - J73-9 (TX-)*	Always	Below 1 Ω
   J50-45 (TX3+) or J56-7 (TX+) - Body ground	Always	10 kΩ or higher
   J50-46 (TX3-) or J56-19 (TX-) - Body ground	Always	10 kΩ or higher
   J50-7 (TX1+) or J73-10 (TX+) - Body ground*	Always	10 kΩ or higher
   J50-8 (TX1-) or J73-9 (TX-) - Body ground*	Always	10 kΩ or higher

   1. *: w/ Panoramic View Monitor System

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect and reconnect each slave unit one by one until the master unit returns to normal.

   HINT: 

   • Check all slave units.
   • If disconnecting a slave unit causes the master unit to return to normal, the slave unit is defective and should be replaced.

   OK

   Master unit returns to normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MALFUNCTIONING PARTS 

Result: 

NG 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2015 - 08/2016]  , or refer to  REMOVAL [08/2016 - 08/2019]