2001 TOYOTA SEQUOIA wiring diagram

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

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

I28592
Multi±display
Controller Sub±assy R25
Television Display Assy
IF49
LG5
TX2+ ID217
R21
LG LG
IF410
LG4
TX2± ID218
R21
LG LG TX+
TX±
LG31
TX+
IF314
R23
L
LG30
TX± IF315
R23
LG TX+ (*1)9
10
9
10
R27 (*1)
Radio and Navigation Assy

R19 (*2)
Radio Receiver Assy
D23
Disc Player Controller
13
TX3± R22
LG
14
TX3+ R22 TX±
TX+18
17
LG
*1: w/ Navigation System
*2: w/o Navigation SystemTX1+ (*2)
TX± (*1)
TX1± (*2)
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2139
2333 Author: Date:
2005 SEQUOIA (RM1146U)
AVC±LAN circuit
CIRCUIT DESCRIPTION
Each unit of this system connected to the AVC±LAN (communication bus) transfers the signal of each switch
by communication.
When a short to +B or short to ground occurs in this AVC± LAN, this system will not function normally as
communication is discontinued.
This system has 2 kinds of AVC±LAN: main AVC±LAN and sub AVC±LAN.
w/ navigation system:
In the main AVC±LAN, the radio and navigation assy becomes the communication master and has enough
resistance necessary for communication.
w/o navigation system:
In the main AVC±LAN, the radio receiver assy becomes the communication master and has enough resis-
tance necessary for communication.
In the sub AVC±LAN, the multi±display controller sub±assy becomes the communication master and has
enough resistance necessary for communication.
WIRING DIAGRAM
DIDBJ±01

I28598
Multi±display
Controller Sub±assy
LG28
RMUT
IF316
R23
R±W
LG12
LMUT IF34
R23
R±G RMU
MUTE Radio Receiver Assy
19
R19
6
R20 w/o Navigation System:
I28598
Multi±display
Controller Sub±assy
LG28
RMUT
IF316
R23
R±W
LG12
LMUT IF34
R23
R±G RMUT
MUTE Radio and Navigation Assy
19
R27
6
R28 w/ Navigation System:
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2147
2341 Author: Date:
2005 SEQUOIA (RM1146U)
Mute signal circuit (Radio receiver assy / Radio and navigation
assy ± Multi±display controller sub±assy)
CIRCUIT DESCRIPTION
The multi±display controller sub±assy controls the volume according to the MUTE signal from the radio re-
ceiver assy or radio and navigation assy.
The MUTE signal is sent to reduce noise and a popping sound generated when the mode, etc. is switched.
WIRING DIAGRAM
DIDBK±01

I28378
Multi±display
Controller Sub±assy
LG1
MUTE R22
MUTE D23
Disc Player Controller
10
I28610
R22
MUTE Multi±display Controller Sub±assy:
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2153
2347 Author: Date:
2005 SEQUOIA (RM1146U)
Mute signal circuit (Disc player controller ± Multi±display control-
ler sub±assy)
CIRCUIT DESCRIPTION
The multi±display controller sub±assy controls the volume according to the MUTE signal from the disc player
controller.
The MUTE signal is sent to reduce noise and a popping sound generated when the mode, etc. is switched.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Inspect multi±display controller sub±assy.
PREPARATION:
Make sure that the R22 connector is connected.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Symbol
(Tester connection)ConditionSpecification
MUTE (R22±1) ±
Body ground
Turn ignition switch to
ACC, RSE system is
sounding "Changing
mode
Above 3.5 V " Below 1 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±2087).
NG
DIDBL±01

I28495
Multi±display
Controller Sub±assy
LG3
GAUX R21
CE V10
VTR Terminal
4
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2155
2349 Author: Date:
2005 SEQUOIA (RM1146U)
VTR terminal set signal circuit
CIRCUIT DESCRIPTION
When terminal GAUX is grounded, the multi±display controller recognizes that an external device is con-
nected.
WIRING DIAGRAM
DIDBM±01

I28474
11 Radio and
Navigation Assy
ACC
1
20
GND GR 1
RAD No. 24 3 A36
ACC Cut Relay
P
3
1 AM1 ACC12 Sub J/B No. 3
3A
W±R
W±R1
IA1 24
L±Y L±Y
2B
3
2C8
2D1 Engine Room J/B
RAD No. 1
ECU±BShort Pin 1J3
1EW±R
1L1
1C6AM12
ALT
B
Battery
IOBRR30 3A
I18
Ignition SWW±LB 212 1
1C 1FGR
GRB C B±O
J37To ECM
J38
Instrument Panel J/B
1 2B
R30
R30 J/C
PW W±R
B 8
54F10
FL Block DI±2256
± DIAGNOSTICSNAVIGATION SYSTEM
2450 Author: Date:
2005 SEQUOIA (RM1146U)
Power source circuit (Radio and navigation assy)
CIRCUIT DESCRIPTION
This circuit provides power to the radio and navigation assy.
WIRING DIAGRAM
DIDDB±01

I28475
GR 1
4 3 A36
ACC Cut Relay
12 Sub J/B No. 3
3AW±R 1
2 3A
GRB C B±O
J37To ECM
J38
RAD No. 2
3
1 6AM1 212 1Instrument Panel J/B
1 2
P
3AM1
ACC W±R
W±L
ALT
B
Battery W±RIL12
L±W
2A
2C8
2D1 Engine Room J/B
RAD No. 3
ECU±BShort Pin 3
B B
BBJ11
J10 J11 L±W
IOBR
BRS10
S9
S9S9
S9 12
10
15
161ACC
B2+
B+
GND
E Stereo Component
Amplifier Assy
1J 1E
1L 1C 1C 1FJ/C
J/C
B
1GR
L±W
L±W
W±R
I18
Ignition SW P
W
8
4
5F10
FL Block DI±2258
± DIAGNOSTICSNAVIGATION SYSTEM
2452 Author: Date:
2005 SEQUOIA (RM1146U)
Power source circuit (Stereo component amplifier assy)
CIRCUIT DESCRIPTION
This circuit provides power to the stereo component amplifier assy.
WIRING DIAGRAM
DIDDD±01