2001 TOYOTA SEQUOIA speaker

I28352
± DIAGNOSTICSAUDIO SYSTEM
DI±2029
2223 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check antenna for noise production.
CHECK:
Noise Check with Antenna
(1) With the ignition switch in the ACC position, turn on the radio and choose the AM mode.
(2) Place the tip of a screwdriver on the antenna of the rear glass antenna, and check that noise is
heard from the speakers.
OK:
Noise occurs.
OK Replace radio receiver assy.
NG
4 Inspect radio receiver assy (Antenna).
CHECK:
(a) Preparation for Check
(1) Remove the antenna plug of the radio receiver as-
sembly.
(b) Noise Check
(1) With the radio receiver assy connector connected,
turn the ignition switch to the ACC position.
(2) Turn on the radio and choose the AM mode.
(3) Place a screwdriver or a piece of metal such as thin
wire on an antenna jack of the radio receiver assy
and check that noise is heard from the speaker.
OK:
Noise occurs.
NG Replace radio receiver assy.
OK
Replace antenna cord sub±assy.

DIDAE±01
I27729
Radio and Navigation Assy (*1)
Radio Receiver Assy (*2)
Rear Door
Speaker Tweeter
Rear Door Speaker Front Door Speaker
and Woofer
Steering Pad Switch Instrument Panel J/B

RAD NO. 2 Fuse

ECU±B

AM1 FuseEngine Room J/B

RAD NO. 1 Fuse

RAD NO. 3 Fuse
Ignition Switch
Rear Seat Audio
Controller Assy
Headphone
Terminal
Front Door
Speaker
and Woofer
Stereo Component
Amplifier
*1: w/ Navigation System
*2: w/o Navigation System
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
DI±2045
2239 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

DIDAF±01
I28753
Sound Signal
Rear Seat Audio Controller Radio Receiver Assy
or
Radio and Navigation
AssyAVC±LAN
Speakers Stereo Component
Amplifier Assy
Switch AssyWireless
HeadphoneHeadphone
Terminal
Wired Headphone Wired Headphone DI±2046
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2240 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM

I28377
w/o Navigation System:
R19
Radio Receiver AssyRear Seat Audio Controller
RMUT
ID2 19
R2411
RMU11
LG R±W
I28377
w/ Navigation System:
R27
Radio and Navigation AssyRear Seat Audio Controller
RMUT
ID2 19
R2411
RMUT11
LG R±W DI±2066
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2260 Author: Date:
2005 SEQUOIA (RM1146U)
Mute signal circuit (to rear seat audio controller)
CIRCUIT DESCRIPTION
This circuit sends the signal to the rear seat audio controller to mute the noise. Because of that, the noise
produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speaker when changing the sound source.
If there is a short in the circuit, even though the rear seat audio controller is normal, no sound or only extreme-
ly small sound can be produced.
WIRING DIAGRAM
DIDAO±01

I28600
w/ Navigation System:
Radio and Navigation AssyRear Seat Audio Controller
R±R+
ID2 15
9
W W R27
R±R± 16
R248
W G
R±L+ 17
R247
W B
R±L± 18
R24
W
R
SG1 14
R24106 9
8
7
106 R±R+
R±R±
R±L+
R±L±
RSLD
(Shielded)
(Shielded) ID2
ID2
ID2
ID2R24
R27
R27
R27
R27 DI±2070
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2264 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Radio receiver assy / radio and navigation
assy ± rear seat audio controller)
CIRCUIT DESCRIPTION
The radio receiver assy (radio and navigation assy) sends a sound signal to the rear seat audio controller
through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assy, and then sent to
the speaker.
If there is an open or short in the circuit, sound can not be heard from the speaker even if there is no malfunc-
tion in the rear seat audio controller or speaker.
WIRING DIAGRAM
DIDAP±01

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

DIDAU±01
I28762
Radio and Navigation Assy
(*1)
or
Radio Receiver Assy (*2)
VTR
TerminalSpeakers Stereo Component
Amplifier Assy
Multi±display Controller
Wireless
HeadphoneDisplay Signal
Sound Signal
AVC±LAN
Headphone
Terminal
Switch AssyDisc
Player
ControllerTelevision
Display
Assy
*1: w/ Navigation System
*2: w/o Navigation System DI±2080
± DIAGNOSTICSREAR SEAT ENTERTAINMANT SYSTEM
2274 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM

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