Toyota Sequoia (2005). Manual — part 578
DIDB4–01
I28485
Multi–display
Controller Sub–assy
R25
Television Display Assy
IF4
ACC
GND
8
7
IF4
IF4
1
Y
LG
Y
1
2
6
+B2
ACC2
GND1
BU+B
ID2
8
7
ID2
ID2
1
R21
R21
R21
Y
LG
Y
Y
LG
Y
8
7
1
–
DIAGNOSTICS
REAR SEAT ENTERTAINMANT SYSTEM
DI–2107
2301
CIRCUIT INSPECTION
Power source circuit (Television display assy)
CIRCUIT DESCRIPTION
This circuit provides power to the television display assy. The power is sent from the battery to the television
display assy through the multi–display controller sub–assy.
WIRING DIAGRAM
I28613
ACC
BU+B
GND
R25
Television Display Assy:
DI–2108
–
DIAGNOSTICS
REAR SEAT ENTERTAINMANT SYSTEM
2302
INSPECTION PROCEDURE
1
Inspect television display assy (BU+B, ACC, GND).
PREPARATION:
Disconnect the R25 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)
Condition
Specified condition
GND (R25–1) –
Body ground
Always
Below 1
Ω
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Symbol (Tester connection)
Condition
Specified condition
BU+B (R25–8) –
GND (R25–1)
Always
10 to 14 V
ACC (R25–7) –
GND (R25–1)
Ignition SW ACC
10 to 14 V
OK
Go to step 3.
NG
I28616
Television Display Assy:
Multi–display Controller Sub–assy:
R25
R21
ACC
BU+B
GND
ACC2
+B2
GND1
–
DIAGNOSTICS
REAR SEAT ENTERTAINMANT SYSTEM
DI–2109
2303
2
Check harness and connector (Television display assy – multi–display controller
sub–assy).
PREPARATION:
Disconnect the R25 and R21 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)
Condition
Specified condition
BU+B (R25–8) – +B2 (R21–1)
Always
Below 1
Ω
ACC (R25–7) – ACC2 (R21–2)
Always
Below 1
Ω
GND (R25–1) – GND1 (R21–6)
Always
Below 1
Ω
BU+B (R25–8) – Body ground
Always
10 k
Ω
or higher
ACC (R25–7) – Body ground
Always
10 k
Ω
or higher
GND (R25–1) – Body ground
Always
10 k
Ω
or higher
NG
Repair or replace harness or connector.
OK
Replace multi–display controller sub–assy.
3
Check problem symptoms table.
CHECK:
Check the problem symptoms table.
RESULT:
All possible suspected areas have been inspected
Go to step A
Possible suspected areas still exist
Go to step B
B
Proceed to next circuit inspection shown in
problem symptoms table or diagnostic trouble
code chart (See page
A
Replace television display assy.
I28486
J/C
Sub J/B No.3
R23
32
Multi–display Controller Sub–assy
ACC
R23
16
+B1
R23
29
GND
IF3
1
IF
C
4
3
A36
ACC
Cut Relay
B
1
I18
Ignition SW
12
12
3A
W–R
W–R
1
To ECM
IA1
26
L–R
L–R
2D
1
2C
8
Engine Room J/B
RAD No. 1
ECU–B
Short Pin
3
W–L
2
W–R
1C
3
1E
1J
W
IL
1
IC
6
AM1
8
F10
FL Block
ALT
5
4
B
Battery
IM
13
LG
GR
GR
L–Y
GR
2
2
Engine Room R/B No. 2
Y
IF3
3
W–B
3A
W–R
1
IF3
2
2B
P
3
ACC
AM1
B
B
1
2
W–L
B–O
J37
J38
L–Y
Y
RAD No. 2
1
Instrument Panel J/B
2
1
RSE
2C
P
DI–2110
–
DIAGNOSTICS
REAR SEAT ENTERTAINMANT SYSTEM
2304
Power source circuit (Multi–display controller sub–assy)
CIRCUIT DESCRIPTION
This circuit provides power to the multi–display controller sub–assy.
WIRING DIAGRAM
DIDB5–01
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