2001 TOYOTA SEQUOIA wiring diagram

I28470
Back Door ECUCombination Meter
I19
A/C ECU
(Integration Control and Panel)
Instrument Panel J/B
I18
Ignition SW
Engine Room J/B
Instrument Panel J/B
J8
J/C F10
Fusible
Link Block
Battery
IEC6 B11
BF1BD2
J34J33C5
C5
C6 1J
1C1D
1H
1J 1C
2C 2D
2C
1D 1F C6 Short Pin
ECU±B
AM2IGN1
IG2 AM2MPX1
MPX±LG±B LG±RLG±R
LG±R
LG±B
W±R
B±O W±R
B±R
W±R W±R
W±R
W±R
W±B
BR B
BABH 231
32
23
24 67
13
3
29
11
5 637
1 8
1
9
612
5 4J/C DI±1944
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2138 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

I28471
Combination MeterMemory Seat ECU
& SW
Sub J/B No. 3J/C
J24
J/C
Instrument Panel J/B
F10
Fusible Link BlockI18
Ignition SW
Engine Room J/B
Battery
BHJ24
J/C J/C
J/C C5 J33 BI2 M6J34
J31 J32
3A 3AJ33 J34
J33 J34BI2
BI2 BI2
M6
M6 M7
AM1 ECU±IG
1F
1L
1J 1E 1G1C
1 4
6
1 16
2
1C
2 4
PWR SEAT
1 2
M7 BI2 ECU±B
Short Pin
2D 2C18 ALT
IG1 AM1 12
BB
W±B
W±B W±B
B58W W±L
W±R W±RB±Y B±R
L±O
3 W±R
W±RW±R W±R B±R B±R B±R L±O
L±O L±O L±O
3 111 8151641
5
A 9 C
A GG A
WWW17 30
CL
I FMPX1
+B
IG
SYSB
GND 1 4
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1947
2141 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

I28472
S19
Sliding Roof
Control ECUInstrument Panel J/BBody ECU
I18
Ignition SW
Instrument Panel J/B
F10
Fusible Link Block
Battery
IEJ8
J/C MPX1
E
B IGMPX3
IG1 AM11 2
AM1 ECU±IG
1F 1L 1MB7
1
6
12
1C4
SUN±ROOF
7 ALT
58W
AW±B B
W±B 1
5
1M
1M 10W±L
L±W B±RW±L
B±Y 2
7
51M 1G
L±WW±B G±O G±O
B±R 89
1220
1C DI±1950
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2144 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

I28473
Combination Meter
F18
Front Passenger
Door ECUBack Door ECU
Sub J/B No. 3I18
Ignition SW Instrument Panel J/B
F10
Fusible Link Block
Engine Room J/BInstrument Panel J/B
Sub J/B No. 3
Battery
BJJ19
J/CJ22
J/C J37
J/CJ/C
J/C J33 J34
J33 J34 C5B11 BF1 BD2
II2B11
B11
B11 BF1 BD2
BD2 BF1 IN1
AM1 ECU±IG
1F
1L
1G1C
14
6
12
1C
154
12PWR No. 5 ALT
58
43C 3A88AAGAB H
IG1
AM1
1 26 7 312
1
6
4 2
5 11 1114 8
BB B B B
20 (*1)LG±R
B±RLG±R LG±R LG±R
B±RB±R B±R B±R
B±R B±Y
W±L W
B B
L±W L±W L±W L±W
W±R
W±R W±R
W±R W±R W±R
W±B W±B W±B W±B
A212
BB3 5
B11
B11 10 12 11 2
3A 3C
BD2 BF1
BF1 BD1IN1BF1 BD1 IC4
2 3 8 1
1J
1E 2C 2DECU±B
Short Pin
23
10MPX1
SIG
BDR
GND MPX2
BECU MPX1
*1: w/ Driving Position Memory
*2: w/o Driving Position Memory 10 (*2)
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
DI±1953
2147 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

I28499
Built±in Type Amplifier:
Radio Receiver Assy A36
ACC Cut Relay Sub J/B No. 3
Instrument Panel J/B
Engine Room J/BTo ECM
Battery
IFR2
R2
R2 12
3A1
3A
1
4 3 W±R
2
GR B C B±O
J37 J38
IA124
L±Y L±Y GR
2B
2C8
2D1 RAD No. 1
ECU±BShort Pin 3
W±R
BRB RAD No. 2
3
1 6AM1 212 1
P
31ALT
5
B
I18
Ignition SWW±L1 2
AACC+B
GND BU+B 4 3
7 W±R
1J
1E
1L 1C1C1F
ACCAM1
GR
8
F10
Fusible Link Block
4 WJ/C
J12
Junction
Connector DI±1990
± DIAGNOSTICSAUDIO SYSTEM
2184 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit (Radio receiver assy)
CIRCUIT DESCRIPTION
This circuit provides power to the radio receiver assy.
WIRING DIAGRAM
DID9U±01

I28500
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
3
AM1
ACC W±R
W±LALT
5
B
Battery W±RILI2
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
GR
8
4 F10
Fusible Link Block WL±W L±W
I18
Ignition SW
± DIAGNOSTICSAUDIO SYSTEM
DI±1993
2187 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
DID9V±01

I28501
Steering
Pad SwitchSpiral Cable
Sub±assyRadio Receiver Assy
SW2
GND SW1 R19
EAUAU2
R19
R19 AU1
EAUAU2
AU1C9±11 GR±R
LG±R
BR±W C9±12
C9±10 A±11
A±12
A±108
7
6
± DIAGNOSTICSAUDIO SYSTEM
DI±1995
2189 Author: Date:
2005 SEQUOIA (RM1146U)
Steering pad switch circuit
CIRCUIT DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the radio receiver assy.
If there is an open in the circuit, the audio system cannot be operated by the steering pad switch.
If there is a short in the circuit, the same condition as when the switch is continuously depressed occurs.
Therefore, not only the steering pad switch cannot operate the radio receiver assy, but also the radio receiver
assy itself cannot function.
WIRING DIAGRAM
DID9W±01

I28476
R6
Light Control
Rheostat AssyRadio Receiver Assy
J/C
Steering Pad Switch
Spiral Cable
Sub±assy From
TAILLIGHT
RelayILL±
GND J/C
ILL+ W±G
GJ39 J40
J39 J40
J39 J40R4
R19 R4R3
R2 W±G
G
G
G A B
A
AAB
ILL±
T12
5
2
10
6 A±1
A±10C9±1
BR±W C9±10(*1)
*1: Separate Type Amplifier
*2: Built±in Type Amplifier(*2) (*1) (*2)
6
4
± DIAGNOSTICSAUDIO SYSTEM
DI±1999
2193 Author: Date:
2005 SEQUOIA (RM1146U)
Illumination circuit
CIRCUIT DESCRIPTION
Power is supplied to the radio receiver panel illumination when the light control switch is in the TAIL or HEAD
position. The body ECU determines the external brightness based on the brightness level detected by the
automatic light control sensor, and then operates the tail relay. Power can also be supplied by operating the
relay.
The intensity of the radio receiver panel illumination can be adjusted by the rheostat switch.
WIRING DIAGRAM
DID9X±01