Toyota Sequoia (2005). Manual - part 587

I28750

Radio and Navigation Assy:

TX–

TX+

R27

I28614

TX+

Multi–display Controller Sub–assy:

R23

TX–

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

DI–2143

2337

5

Check harness and connector (Radio and navigation assy – multi–display con-
troller sub–assy).

PREPARATION:
Disconnect the R23 and R27 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Symbol (Tester connection)

Condition

Specified condition

TX+ (R27–9) – TX+ (R23–31)

Always

Below 1 

Ω

TX– (R27–10) – TX– (R23–30)

Always

Below 1 

Ω

TX+ (R27–9) – Body ground

Always

10 k

Ω 

or higher

TX– (R27–10) – Body ground

Always

10 k

Ω 

or higher

NG

Repair or replace harness or connector.

OK

Replace multi–display controller sub–assy.

6

Service check mode (Multi–display controller sub–assy).

CHECK:
Perform the service check (See page 

DI–2099

).

Start the diagnosis system and read the check result for the radio and navigation assy.

RESULT:

”NCON” is displayed or result is not displayed (RSE ECU)

Go to step A

”GOOD” is displayed

Go to step B

HINT:



This system has 2 kinds of AVC–LAN: main AVC–LAN and sub AVC–LAN. The television display is
connected for the sub AVC–LAN.



Perform the communication check for the diagnosis system (See page 

DI–2097

).

B

Replace radio receiver assy.

A

I28618

Radio Receiver Assy:

TX+

TX–

Multi–display Controller Sub–assy:

TX1–

TX1+

R23

R19

DI–2144

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

2338

7

Check harness and connector (Radio receiver assy – Multi–display controller
sub–assy).

PREPARATION:
Disconnect the R19 and R23 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Symbol (Tester connection)

Condition

Specified condition

TX1+ (R19–9) – TX+ (R23–31)

Always

Below 1 

Ω

TX1– (R19–10) – TX– (R23–30)

Always

Below 1 

Ω

TX1+ (R19–9) – Body ground

Always

10 k

Ω 

or higher

TX1– (R19–10) – Body ground

Always

10 k

Ω 

or higher

NG

Repair or replace harness or connector.

OK

Replace radio receiver assy.

I28617

Disc Player Controller:

Multi–display Controller Sub–assy:

TX–

TX+

TX3–

TX3+

D23

R22

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

DI–2145

2339

8

Service check mode (Disc player controller).

CHECK:
Perform the service check (See page 

DI–2099

).

Start the diagnosis system and read the check result for the disc player controller.

RESULT:

”NCON” is displayed or result is not displayed (DVD–P)

Go to step A

”GOOD” is displayed

Go to step B

HINT:



This system has 2 kinds of AVC–LAN: main AVC–LAN and sub AVC–LAN. The television display is
connected for the sub AVC–LAN.



Perform the communication check for the diagnosis system (See page 

DI–2097

).

B

Replace multi–display controller sub–assy.

A

9

Check harness and connector (Disc player controller – Multi–display controller
sub–assy).

PREPARATION:
Disconnect the R22 and D23 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Symbol (Tester connection)

Condition

Specified condition

TX+ (D23–17) – TX3+ (R22–14)

Always

Below 1 

Ω

TX– (D23–18) – TX3– (R22–13)

Always

Below 1 

Ω

TX+ (D23–17)– Body ground

Always

10 k

Ω 

or higher

TX– (D23–18) – Body ground

Always

10 k

Ω 

or higher

NG

Repair or replace harness or connector.

OK

DI–2146

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

2340

Replace disc player controller.