2001 TOYOTA SEQUOIA terminal TC

DIDAD±01
DI±2044
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2238 Author: Date:
2005 SEQUOIA (RM1146U)
REAR SEAT AUDIO SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System NameSee Page
Back Door Power Window Control SystemBE±77

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

DIDAJ±01
RSA SYSTEM Check Sheet
Inspector 's name:
Customer 's NameVIN
Production Date
Licence Plate No.
Odometer Reading / /km
mile
Frequency of Problem Occurrence / /

Constant
Intermittent ( Times a day) Brought±in Date
Date of First Occurrence
Problem
Symptom

Headphone
DTC
Check
Parts name
DTC (1st time)DTC (2nd time)
Switch Assy

Headphone Terminal
Rear Seat Audio Controller Assy


± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
DI±2049
2243 Author: Date:
2005 SEQUOIA (RM1146U)
CUSTOMER PROBLEM ANALYSIS CHECK

DIDAK±01
DI±2050
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2244 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
RSA SYSTEM
SymptomSuspected AreasSee page
RSA system cannot be powered.1. Power source circuit (rear seat controller assy)DI±2058
Quality of sound from wireless headphone is poor or no sound
can be heard.
1. Power source circuit (rear seat controller assy)
2. Mute signal circuit (to rear seat audio controller)
3. Sound signal circuit (to rear seat audio controller)
4. Rear seat audio controllerDI±2058
DI±2066
DI±2070
±
Quality of sound from headphone connected to headphone termi-
nal is poor or no sound can be heard.
1. Power source circuit (rear seat controller assy)
2. Mute signal circuit (to rear seat audio controller)
3. Sound signal circuit (Rear seat audio controller ± head-
phone terminal)
4. Sound signal circuit (Radio receiver assy / radio and
navigation assy ± rear seat audio controller)DI±2058
DI±2066
DI±2073
DI±2070
REMOTE CONTROL
SymptomSuspected AreasSee page
A remote control system does not operate.
1. Power source circuit (rear seat controller assy)
2. A remote control system does not operate
3. AVC±LAN circuitDI±2058
DI±2076
DI±2061

DIDAL±01
I28334
R24
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
DI±2051
2245 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECU
1. REAR SEAT AUDIO CONTROLLER
Terminals No. (Symbols)Wiring ColorTerminal
DescriptionConditionSpecified value
R24±1 ± Body ground
(SGN1 ± Body ground)Shielded ±
Body groundGroundAlwaysBelow 1 V
R24±2 ± R24±17
(HP1L ± GND)BR ± LGSound signal
(Output)RSA system is sounding (Headphone)
A waveform syn-
chronized with
sounds is output
R24±3 ± R24±17
(HP1R ± GND)BR ± LGSound signal
(Output)RSA system is sounding (Headphone)
A waveform syn-
chronized with
sounds is output
R24±6 ± R24±17
(R±L± ± GND)W ± LGSound signal
(Input)RSA system is sounding
A waveform syn-
chronized with
sounds is output
R24±7 ± R24±17
(R±L+ ± GND)W ± LGSound signal
(Input)RSA system is sounding
A waveform syn-
chronized with
sounds is output
R24±8 ± R24±17
(R±R± ± GND)W ± LGSound signal
(Input)RSA system is sounding
A waveform syn-
chronized with
sounds is output
R24±9 ± R24±17
(R±R+ ± GND)W ± LGSound signal
(Input)RSA system is sounding
A waveform syn-
chronized with
sounds is output
R24±10 ± Body ground
(SG1 ± Body ground)Shielded ±
Body groundGroundAlwaysBelow 1 V
R24±11 ± R24±17
(RMUT ± GND)LG ± LGMute signalAudio system is playing " Changing modeAbove 3.5 V "
Below 1 V
R24±12 ± R24±17
(+B ± GND)LG ± LGBatteryAlways10 to 14 V
R24±13 ± Body ground
(SGN2 ± Body ground)Shielded ±
Body groundGroundAlwaysBelow 1 V
R24±14 ± R24±17
(HP2L ± GND)BR ± LGSound signal
(Output)RSA system is sounding (Headphone)
A waveform syn-
chronized with
sounds is output
R24±15 ± R24±17
(HP2R ± GND)BR ± LGSound signal
(Output)RSA system is sounding (Headphone)
A waveform syn-
chronized with
sounds is output
R24±17 ± Body ground
(GND ± Body ground)LG ±
Body groundGroundAlwaysBelow 1 W

I28323
H10
H11
Headphone Terminal LH
Headphone Terminal RH DI±2052
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
2246 Author: Date:
2005 SEQUOIA (RM1146U)R24±22 ±R24±17 (TX+ ±
GND)
LG ± LG
AVC±LAN
communication
signal
Ignition switch ON2 to 3 V
R24±23 ±R24±17 (TX± ±
GND)LG ± LG
AVC±LAN
communication
signal
Ignition switch ON2 to 3 V
R24±24 ± R24±17
(ACC ± GND)LG ± LGIgnition (ACC)Ignition switch ON10 to 14 V
2. HEADPHONE TERMINAL
Terminal No. (Symbols)Wiring ColorTerminal
DescriptionConditionSpecified value
H10±1 ± H10±3
(HPR ± SGND)BR ± ShieldedSound signal
(Input)External device system sounding
(At that time of headphone terminal use)A waveform syn-
chronized with
sound is output
H10±2 ± H10±3
(HPL ± SGND)BR ± ShieldedSound signal
(Input)External device system sounding
(At that time of headphone terminal use)A waveform syn-
chronized with
sound is output
H10±3 ± Body ground
(SGND ± Body ground)Shielded ± Body
groundGroundAlwaysBelow 1 V
H11±1 ± H11±3
(HPR ± SGND)BR ± ShieldedSound signal
(Input)External device system sounding
(At that time of headphone terminal use)A waveform syn-
chronized with
sound is output
H11±2 ± H11±3
(HPL ± SGND)BR ± ShieldedSound signal
(Input)External device system sounding
(At that time of headphone terminal use)A waveform syn-
chronized with
sound is output
H11±3 ± Body ground
(SGND ± Body ground)Shielded ± Body
groundGroundAlwaysBelow 1 V

I28601
H10
Headphone Terminal LHRear Seat Audio Controller
HP1R
ID2R243
BR W
HP1L ID2
R242
BR B
SGN1
ID2R241 3
2
1
(Shielded) (Shielded) BR
BR HPR
HPL
SGND
(Shielded)IF38
7
6
H11
Headphone Terminal RH
HP2R
ID2R2415
BR W
HP2L
ID2
R2414
BR B
SGN2
ID2R2413 19
18
17
(Shielded) (Shielded) BR
BR HPR
HPL
SGND
(Shielded)20
19
18 1
2
3
1
2
3IF3
IF3
IF3
IF3
IF3
± DIAGNOSTICSREAR SEAT AUDIO SYSTEM
DI±2073
2267 Author: Date:
2005 SEQUOIA (RM1146U)
Sound signal circuit (Rear seat audio controller ± headphone ter-
minal)
CIRCUIT DESCRIPTION
Music sound which is heard via the headphone terminal of the rear seat audio system is directly sent to the
headphones without being sent through the stereo component amplifier.
WIRING DIAGRAM
DIDAQ±01