TOYOTA SEQUOIA 2001 Service Repair Manual

I28597
IF3
R±L+ R±R±
R±R+
R±L± W
(Shielded)Multi±display
Controller Sub±assy
R2326
R2325
R2324
R2323
R2327 W
W
W IF3
IF3
IF3
IF3
(Shielded) R±L+ R±R±
R±R+
R±L±R2715
R2716
R2717
R2718
R2714
RSLD
SG2 Radio and Navigation Assy
W
G
B
R18
19
20
21
17
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2129
2323 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (From radio and navigation assy to multi±
display sub±assy)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the radio and navigation assy to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDBE±01

I28750
Radio and Navigation Assy:
R27
RSLD
R±R+
R±R± R±L+ R±L±
I28614
SG2R23
Multi±display Controller Sub±assy:
R±R+
R±R±R±L+R±L±
DI±2130
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2324 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 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)ConditionSpecified condition
R±R+ (R27±15) ± R±R+ (R23±26)AlwaysBelow 1 W
R±R± (R27±16) ± R±R± (R23±25)AlwaysBelow 1 W
R±L+ (R27±17) ± R±L+ (R23±24)AlwaysBelow 1 W
R±L± (R27±18) ± R±L± (R23±23)AlwaysBelow 1 W
RSLD (R27±14) ± SG2 (R23±27)AlwaysBelow 1 W
R±R+ (R27±15) ± Body groundAlways10 kW or higher
R±R± (R27±16) ± Body groundAlways10 kW or higher
R±L+ (R27±17) ± Body groundAlways10 kW or higher
R±L± (R27±18) ± Body groundAlways10 kW or higher
RSLD (R27±14) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).

I28666
Multi±display
Controller Sub±assy
R2112
R2111
R2110 BR
BR AUXR
AUXL
SG61
2
3
(Shielded) V10
VTR Terminal
AUXR
AUXL
SG7
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2131
2325 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Multi±display controller sub±assy ± VTR ter-
minal)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the VTR terminal to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDBF±01

I28321I28327
VTR Terminal:
Multi±display Controller Sub±assy:SG6
V10
R21
AUXL
AUXR
AUXR
AUXL
SG7
DI±2132
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2326 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (VTR terminal ± Multi±display controller sub±
assy).
PREPARATION:
Disconnect the R21 and V10 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
SG6 (V10±3) ± SG7 (R21±10)AlwaysBelow 1 W
AUXR (V10±1) ± AUXR (R21±12)AlwaysBelow 1 W
AUXL (V10±2) ± AUXL (R21±11)AlwaysBelow 1 W
AUXR (V10±1) ± Body groundAlways10 kW or higher
AUXL (V10±2) ± Body groundAlways10 kW or higher
SG6 (V10±3) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).

I28668
HP1R
HP1L
SG5 R219
R218
R217 BR
BR HPR
HPL
SGND1
2
3
(Shielded) H10
Headphone Terminal LHMulti±display
Controller Sub±assy
HP2R
HP2L
SG6 R2121
R2120
R2119 BR
BR HPR
HPL
SGND1
2
3
(Shielded) H11
Headphone Terminal RH
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2133
2327 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Multi±display controller sub±assy ± Head-
phone terminal)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the headphone terminal to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDBG±01

I28333
Headphone Terminal:
Multi±display Controller Sub±assy:
SG5HP1L
HP1R
SG6
HP2L HP2R R21
H10
H11
HPR
HPL
SGND
DI±2134
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2328 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Headphone terminal ± Multi±display controller
sub±assy).
PREPARATION:
Disconnect the H10 (H11) and R21 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
HPR (H10±1) ± HP1R (R21±9)AlwaysBelow 1 W
HPL (H10±2) ± HP1L (R21±8)AlwaysBelow 1 W
HPR (H11±1) ± HP2R (R21±21)AlwaysBelow 1 W
HPL (H11±2) ± HP2L (R21±20)AlwaysBelow 1 W
SGND (H10±3) ± SG5 (R21±7)AlwaysBelow 1 W
SGND (H11±3) ± SG6 (R21±19)AlwaysBelow 1 W
HPR (H10±1, H11±1) ± Body groundAlways10 kW or higher
HPL (H10±2, H11±2) ± Body groundAlways10 kW or higher
SGND (H10±3, H11±3) ± Body groundAlways10 kW or higher
SGND (H10±3) ± Body groundAlways10 kW or higher
SGND (H11±3) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).

I28593
(Shielded) (Shielded)R22 5
6
3
4
2517
16
19
18
20 R22 R22 R22 IF4 ID2
R22 L+
SGNDW
W
W
W 6
IF4
3
IF4
4
IF4
2
IF4 ID2
ID2
ID2
ID2
(Shielded) R25
Television Display AssyMulti±display
Controller Sub±assy
L±
R+
R±HPL+
SLD1 HPL±
HPR+
HPR± W
W
W
W W
W
W
W5
6
3
4
2
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2135
2329 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Multi±display controller sub±assy ± Televi-
sion display assy)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the television display assy to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDBH±01

I28332
Television Display Assy: Multi±display Controller Sub±assy:
HPL± HPL+
HPR+
HPR± SLD1
SGND
R+
R±
L+ L±
R22
R25
DI±2136
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2330 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Multi±display controller sub±assy ± Television
display assy).
PREPARATION:
Disconnect the R22 and R25 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
HPR+ (R22±19) ± R+ (R25±3)AlwaysBelow 1 W
HPR± (R22±18) ± R± (R25±4)AlwaysBelow 1 W
HPL+ (R22±17) ± L+ (R25±5)AlwaysBelow 1 W
HPL± (R22±16) ± L± (R25±6)AlwaysBelow 1 W
SLD1 (R22±20) ± SGND (R25±2)AlwaysBelow 1 W
HPR+ (R22±19) ± Body groundAlways10 kW or higher
HPR± (R22±18) ± Body groundAlways10 kW or higher
HPL+ (R22±17) ± Body groundAlways10 kW or higher
HPL± (R22±16) ± Body groundAlways10 kW or higher
SLD1 (R22±20) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).

I28669
AR+
AR±
AL+
AL±
SG4
(Shielded)R22 6
7
8
9
55
4
3
2
6 R22 R22 R22 R22 R+
R±
L+
L±
SLDW
W
W
W D23
Disc Player ControllerMulti±display
Controller Sub±assy
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2137
2331 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Multi±display controller sub±assy ± Disc
player controller)
CIRCUIT DESCRIPTION
This is the sound signal circuit from the disc player controller to the multi±display controller sub±assy.
WIRING DIAGRAM
DIDBI±01

I28330
Disc Player Controller:
Multi±display Controller Sub±assy:
R+L+R± L±
SLD
AL+AR+
AR±SG4AL± D23
R22
DI±2138
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2332 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (Multi±display controller sub±assy ± Disc player
controller).
PREPARATION:
Disconnect the R22 and D23 connectors.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol (Tester connection)ConditionSpecified condition
L± (D23±9) ± AL± (R22±2)AlwaysBelow 1 W
L+ (D23±8) ± AL+ (R22±3)AlwaysBelow 1 W
R± (D23±7) ± AR± (R22±4)AlwaysBelow 1 W
R+ (D23±6) ± AR+ (R22±5)AlwaysBelow 1 W
SLD (D23±5) ± SG4 (R22±6)AlwaysBelow 1 W
L± (D23±9) ± Body groundAlways10 kW or higher
L+ (D23±8) ± Body groundAlways10 kW or higher
R± (D23±7) ± Body groundAlways10 kW or higher
R+ (D23±6) ± Body groundAlways10 kW or higher
SLD (D23±5) ± Body groundAlways10 kW or higher
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown in problem symptoms table (See page DI±2087).