2001 TOYOTA SEQUOIA instrument panel

DIDAM±01
I28496
B±O
24R24
Rear Seat Audio
Controller Assy
ACC
+B
17
GND 1228 C
4 3A36
ACC Cut
Relay
B 12 1Sub J/B No.3
3A
ID2 W±R
J/C
L±Y1
2
IA1 26 L±R
L±R
2B3
2C8
2D Engine Room J/B
ECU±BShort Pin
1 Instrument Panel J/B
W±R
AM11
3 2RAD No.2
W 1
P6
ALT
1B
BatteryLG To ECM
GR
RSE
2 2
1Engine Room R/B No.2J37
ID221
IMLG 3A
LG
12
ID2 J38
L±R
2 12
W±LRAD No.1
W±R
W±L 1
2B
3
AM1B
ACC
I18
Ignition SW 1C
1C 1E1F
1J
1LGR
PW±R
GR
W±B 58
4F10
Fusible Link Block DI±2058
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2252 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT INSPECTION
Power source circuit (Rear seat audio controller)
CIRCUIT DESCRIPTION
This circuit provides the power to the rear seat audio controller.
WIRING DIAGRAM

DIDAT±01
I27728
Radio and Navigation Assy (*1)
Radio Receiver Assy (*2)
Rear Door
SpeakerSteering Pad Switch
Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B Fuse

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Ignition Switch
Headphone
Terminal
Front Door
Speaker and
Woofer
Stereo Component Amplifier
Multi±display
Controller
Sub±assy
*1: w/ Navigation System
*2: w/o Navigation SystemVTR TerminalDisc Player
Controller
Rear Door
Speaker
Front Door
Speaker and
Woofer
Tweeter
Television Display Assy
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
DI±2079
2273 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

I28486
J/C Sub J/B No.3
R2332 Multi±display Controller Sub±assy
ACC
R2316
+B1
R2329
GND IF3
1
IFC
4 3A36
ACC
Cut Relay
B 1
I18
Ignition SW12
12 3A W±R
W±R
1To ECM
IA126
L±R L±R
2D1
2C8Engine Room J/B
RAD No. 1
ECU±BShort Pin 3
W±L2
W±R 1C
3
1E 1J
W
IL1
IC6AM1
8
F10
FL Block
ALT
54
B
Battery
IM13
LG GR GR
L±Y GR
2 2 Engine Room R/B No. 2
Y
IF33
W±B 3AW±R
1
IF3
22B
P
3
ACCAM1
BB 1 2 W±LB±O
J37 J38
L±YY
RAD No. 2 1Instrument Panel J/B
2
1RSE
2C P DI±2110
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2304 Author: Date:
2005 SEQUOIA (RM1146U)
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

DIDBP±01
I27727
Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B Fuse

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Steering Pad
Switch
Ignition SwitchDisc Player
Controller
(*1)
Stereo
Component
Amplifier
Multi±display
Controller (*1)
VTR
Terminal
(*1)Headphone
Terminal
(*1) (*2)
Radio and
Navigation Assy GPS Antenna
TweeterTelevision Display Assy (*1)
Rear Seat Audio
Controller Assy (*2)
Rear Door SpeakerRear Door Speaker
Front Door Speaker
and Woofer
Front Door Speaker
and Woofer
*1: w/ RSE System
*2: w/ RSA System
DI±2160
± DIAGNOSTICSNAVIGATION SYSTEM
2354 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

± DIAGNOSTICSNAVIGATION SYSTEM
DI±2245
2439 Author: Date:
2005 SEQUOIA (RM1146U)
GPS mark is not displayed
INSPECTION PROCEDURE
1 Check cabin.
CHECK:
Check the cabin for any object that might interrupt radio reception on the instrument panel. If such an object
exists, remove it and check if the GPS mark reappears.
HINT:
GPS works using extremely weak radio waves originating from satellites. If the signal is interrupted by ob-
structions or another radio wave, the GPS system may not be able to properly receive the signal.
OK:
Mark appears.
OK Normal operation.
NG
2 Check surroundings.
CHECK:
Check if the vehicle is in a location where GPS signal reception is bad. If the vehicle is in such a place, move
it elsewhere and check if the GPS mark reappears.
HINT:

GPS uses 24 satellites in 6 orbits so that at any time 4 satellites will be in line±of±sight of your vehicle.

GPS signals may not be received, however, based on surroundings, vehicle direction, and time.
DIDD1±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

I28481
Radio and Navigation Assy
P1
Park/Neutral Position Switch
Instrument Panel J/BREV
IG4J/C
J51 J52
From Ignition
SwitchR29
IPORAD No. 2
1D 1CRB
RL L±R B±Y5 FH
L±R B±Y
L±R7
1
8
6 9
1 2 DI±2294
± DIAGNOSTICSNAVIGATION SYSTEM
2488 Author: Date:
2005 SEQUOIA (RM1146U)
Reverse signal circuit
CIRCUIT DESCRIPTION
The radio and navigation assy receives the reverse signal from the park/neutral position switch and informa-
tion about the GPS antenna, and then adjusts the vehicle position.
WIRING DIAGRAM
DIDDQ±01