AVC-LAN Circuit [12/2013 - ]: Procedure

1. Choose the model to be inspected.

   Result	Proceed to
   for Audio and Visual System	A
   for Navigation System	B

Result: 

B 

See step  5

Result: 

A 

Go to next step 

1. Remove the radio and display receiver assembly.

   Refer to REMOVAL [12/2013 - ]

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Radio and Display Receiver Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   9 (TX+) - 10 (TX-)	Always	60 to 80 Ω

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY: 

Refer to REMOVAL [12/2013 - ] .

Result: 

OK 

Go to next step 

1. Disconnect the F73 radio and display receiver assembly connector.
2. Disconnect the S8 television display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S8-3 (TX1+) - F73-9 (TX+)	Always	Below 1 Ω
   S8-4 (TX1-) - F73-10 (TX-)	Always	Below 1 Ω
   S8-3 (TX1+) - Body ground	Always	10 kΩ or higher
   S8-4 (TX1-) - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

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

   HINT: 

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

   OK

   Master unit returns to normal operation.

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MALFUNCTIONING PARTS 

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY: 

Refer to REMOVAL [12/2013 - ] .

1. Remove the navigation receiver assembly.

   Refer to REMOVAL [12/2013 - ] .

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Navigation Receiver Assembly)

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   9 (TX+) - 10 (TX-)	Always	60 to 80 Ω

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NAVIGATION RECEIVER ASSEMBLY: 

Refer to REMOVAL [12/2013 - ] .

Result: 

OK 

Go to next step 

1. Disconnect the F118 navigation receiver assembly connector.
2. Disconnect the S8 television display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S8-3 (TX1+) - F118-9 (TX+)	Always	Below 1 Ω
   S8-4 (TX1-) - F118-10 (TX-)	Always	Below 1 Ω
   S8-3 (TX1+) - Body ground	Always	10 kΩ or higher
   S8-4 (TX1-) - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

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

   HINT: 

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

   OK

   Master unit returns to normal operation.

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MALFUNCTIONING PARTS 

Result: 

NG 

REPLACE NAVIGATION RECEIVER ASSEMBLY: 

Refer to REMOVAL [12/2013 - ] .