Toyota Sequoia (2005). Manual - part 582

I28597

IF3

L+

R–

R+

L–

6

W

(Shielded)

Multi–display 
Controller Sub–assy

R23

10

R23

9

R23

8

R23

7

R23

11

W

W

W

IF3

7

IF3

8

IF3

9

IF3

5

(Shielded)

W

G

B

R

L+

R–

R+

L–

R20

2

R20

3

R20

4

R20

5

R20

1

S–GND

SG1

Radio Receiver Assy

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

DI–2123

2317

Sound signal circuit (From multi–display controller sub–assy to
radio receiver assy)

CIRCUIT DESCRIPTION

This is the sound signal circuit from the multi–display controller sub–assy to the radio receiver assy.

WIRING DIAGRAM

DIDBB–01

I28740

Radio Receiver Assy
Wire Harness View:

L+

S–GND

L–

R+

R–

R20

I28614

R23

L+

SG1 R–

L–

R+

Multi–display Controller Sub–assy:

DI–2124

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

2318

INSPECTION PROCEDURE

1

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

PREPARATION:
Disconnect the R20 and R23 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Symbol (Tester connection)

Condition

Specified condition

L+ (R20–4) – L+ (R23–8)

Always

Below 1 

Ω

L– (R20–5) – L– (R23–7)

Always

Below 1 

Ω

R+ (R20–2) – R+ (R23–10)

Always

Below 1 

Ω

R– (R20–3) – R– (R23–9)

Always

Below 1 

Ω

S–GND (R20–1) – SG1 (R23–11)

Always

Below 1 

Ω

L+ (R20–4) – Body ground

Always

10 k

Ω 

or higher

L– (R20–5) – Body ground

Always

10 k

Ω 

or higher

R+ (R20–2) – Body ground

Always

10 k

Ω 

or higher

R– (R20–3) – Body ground

Always

10 k

Ω 

or higher

S–GND (R20–1) – Body ground

Always

10 k

Ω 

or higher

NG

Repair or replace harness or connector.

OK

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2087

).

I28597

IF3

L+

R–

R+

L–

6

W

(Shielded)

Multi–display 
Controller Sub–assy

R23

10

R23

9

R23

8

R23

7

R23

11

W

W

W

IF3

7

IF3

8

IF3

9

IF3

5

(Shielded)

W

G

B

R

CDL+

CDR–

CDR+

CDL–

R28

2

R28

3

R28

4

R28

5

R28

1

CSLD

SG1

Radio and Navigation Assy

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

DI–2125

2319

Sound signal circuit (From multi–display controller sub–assy to
radio and navigation assy)

CIRCUIT DESCRIPTION

This is the sound signal circuit from the multi–display controller sub–assy to the radio and navigation assy.

WIRING DIAGRAM

DIDBC–01

I28612

Radio and Navigation Assy 
Wire Harness View:

R28

CDL+

CDR–

CSLD

CDL–

CDR+

I28614

R23

L+

SG1 R–

L–

R+

Multi–display Controller Sub–assy:

DI–2126

–

DIAGNOSTICS

REAR SEAT ENTERTAINMANT SYSTEM

2320

INSPECTION PROCEDURE

1

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

PREPARATION:
Disconnect the R23 and R28 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Symbol (Tester connection)

Condition

Specified condition

CDL+ (R28–4) – L+ (R23–8)

Always

Below 1 

Ω

CDL– (R28–5) – L– (R23–7)

Always

Below 1 

Ω

CDR+ (R28–2) – R+ (R23–10)

Always

Below 1 

Ω

CDR– (R28–3) – R– (R23–9)

Always

Below 1 

Ω

CSLD (R28–1) – SG1 (R23–11)

Always

Below 1 

Ω

CDL+ (R28–4) – Body ground

Always

10 k

Ω 

or higher

CDL– (R28–5) – Body ground

Always

10 k

Ω 

or higher

CDR+ (R28–2) – Body ground

Always

10 k

Ω 

or higher

CDR– (R28–3) – Body ground

Always

10 k

Ω 

or higher

CSLD (R28–1) – Body ground

Always

10 k

Ω 

or higher

NG

Repair or replace harness or connector.

OK

Proceed to next circuit inspection shown in problem symptoms table (See page 

DI–2087

).