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
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
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