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05-1462
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM 05BVF-02
QUALITY OF SOUND FROM HEADPHONE CONNECTED TO
HEADPHONE TERMINAL IS POOR OR NO SOUND CAN BE
HEARD
WIRING DIAGRAM
R25 Multi-display
Television Display Assy Controller Sub-assy
8
8 W
HP1L R28 HP1L
9
7 W
HP1R R28 HP1R
7
(Shielded)
S.GND 9 R28 SG5
20
24 W
HP2L R28 HP2L
21
W
HP2R 23 R28 HP2R
19
25 (Shielded)
SLD R28 SG6
Radio Receiver Assy or
Radio and Navigation Assy
RSLD (*1)
14 14 (Shielded) 20 (Shielded) 27
SLD (*2, *3) R13 R9 IH3 R26 SG2
(*1) (*2, *3)
16 16 W 22 25
R-R- (*1) W
RSR- (*2, *3) R13 R9 IH3 R26 R-R-
(*1) (*2, *3)
15 15 21 26
R-R+ (*1) B W
RSR+ (*2, *3)
R13 R9 IH3 R26 R-R+
(*1) (*2, *3)
18 18 24 23
R-L- (*1) G W
RSL- (*2, *3)
R13 R9 IH3 R26 R-L-
(*1) (*2, *3)
17 17 23 24
R-L+ (*1) R W
RSL+ (*2, *3)
R13 R9 IH3 R26 R-L+
(*1) (*2, *3)
20 20 7 J23 J/C 7
W-B W-B W-B
GND R15 R7 R5 IF2
(*1) (*2)
B B
(*3)
IF
*1: 10 Speaker w/ Navigation system
*2: 10 Speaker w/o Navigation system
*3: 6 Speaker
I35025
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1645
05-1463
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(RADIO RECEIVER ASSY - MULTI-DISPLA Y
CONTROLLER SUB-ASSY)
Radio Receiver Assy (a) Disconnect the radio receiver assy and multi-display con-
w/ Navigation system: troller sub-assy connectors.
(b) In order to check for an open circuit, measure the resis-
tance between the terminals, as shown in the chart.
Standard:
Tester connection Specified condition
R-R+ - R-R+ (*1) Below 1
R-R- - R-R- (*1) Below 1
R-L+ - R-L+ (*1) Below 1
RSLD R-L- - R-L- (*1) Below 1
R-L-
R-L+ R-R+ RSLD - SG2 (*1) Below 1
R-R-
w/o Navigation system (10 Speaker): RSR+ - R-R+ (*2, *3) Below 1
RSR- - R-R- (*2, *3) Below 1
RSL+ - R-L+ (*2, *3) Below 1
RSL- - R-L- (*2, *3) Below 1
SLD - SG2 (*2, *3) Below 1
SLD HINT:
S *1: w/ Navigation system
RSL- S *2: w/o Navigation system (10 speaker)
RSL+ S *3: w/o Navigation system (6 speaker)
RSR- RSR+
w/o Navigation system (6 Speaker): (c) In order to check for a short circuit, measure the resis-
tance between the terminals, as shown in the chart.
Standard:
Tester connection Specified condition
R-L- - Body ground 10 k or higher
SLD R-L+ - Body ground 10 k or higher
R-R- - Body ground 10 k or higher
RSL- RSR+ R-R+ - Body ground 10 k or higher
I38660 RSL+ RSR- SG2 - Body ground 10 k or higher
I35959 I45601
Multi-display Controller Sub-assy:
R-L-
R-L+
SG2
R-R+ R-R- I35963
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1646
05-1464
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
2 INSPECT RADIO RECEIVER ASSY(R-R+, R-R-, R-L+, R-L-, RSR+, RSR-, RSL+,
RSL-, GND)
Radio Receiver Assy (a) In order to check for an open circuit, measure the resis-
w/ Navigation system: tance between the terminals according to the condition,
as shown in the chart.
Standard:
Tester connection Condition Specified condition
GND - Body ground Always Below 1
(b) Connect the radio receiver assy connector.
R-L- RSLD (c) Using an oscilloscope, check the signal waveform ac-
GND cording to the conditions, as shown in the chart.
R-L+ R-R R-R+
w/o Navigation system (10 Speaker):
RSL- RSR-
RSL+ RSR+
GND
w/o Navigation system (6 Speaker):
RSL- RSR-
RSL+ RSR+
I38652 GND
I35958 I45602
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1647
05-1465
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
Standard:
Tester connection Condition Specified condition
R-R+ - GND (*1) While voice sound is being produced A waveform synchronized with sound is output
R-R- - GND (*1) While voice sound is being produced A waveform synchronized with sound is output
R-L+ - GND (*1) While voice sound is being produced A waveform synchronized with sound is output
R-L- - GND (*1) While voice sound is being produced A waveform synchronized with sound is output
RSR+ - GND (*2, 3) While voice sound is being produced A waveform synchronized with sound is output
RSR- - GND (*2, 3) While voice sound is being produced A waveform synchronized with sound is output
RSL+ - GND (*2, 3) While voice sound is being produced A waveform synchronized with sound is output
RSL- - GND (*2, 3) While voice sound is being produced A waveform synchronized with sound is output
HINT:
S *1: w/ Navigation system
S *2: w/o Navigation system (10 speaker)
S *3: w/o Navigation system (6 speaker)
NG REPLACE RADIO RECEIVER ASSY
OK
3 CHECK HARNESS AND CONNECTOR(MULTI-DISPLA Y CONTROLLER
SUB-ASSY - TELEVISION DISPLAY ASSY)
Television Display Assy:
(a) Disconnect the multi-display controller sub-assy and
television display assy connectors.
(b) In order to check for an open circuit, measure the resis-
tance between the terminals, as shown in the chart.
HP1L
Standard:
Tester connection Specified condition
HP1R - HP1R Below 1
S.GND HP1R
HP1L - HP1L Below 1
SLD HP2R HP2R - HP2R Below 1
HP2L HP2L - HP2L Below 1
Multi-display Controller Sub-assy:
S.GND - SG5 Below 1
SLD - SG6 Below 1
(c) In order to check for a short circuit, measure the resis-
tance between the terminals, as shown in the chart.
Standard:
HP1R HP1L
Tester connection Specified condition
HP1R - Body ground 10 k or higher
SG5
HP2R SG6 HP1L - Body ground 10 k or higher
HP2L I35965
HP2R - Body ground 10 k or higher
HP2L - Body ground 10 k or higher
S. GND - Body ground 10 k or higher
SLD - Body ground 10 k or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1648
05-1466
DIAGNOSTICS - REAR SEAT ENTERTAINMENT SYSTEM
4 INSPECT MULTI-DISPLA Y CONTROLLER SUB-ASSY(HP1R, HP1L, HP2R, HP2L,
SG5, SG6)
Multi-display Controller Sub-assy: (a) Connect the multi-display controller sub-assy.
HP1L SG5 (b) In order to check for an open circuit, measure the resis-
HP1R tance between the terminals according to the conditions,
as shown in the chart.
Standard:
Tester connection Condition Specified condition
HP2R SG6
SG5 - Body ground Always Below 1
HP2L SG6 - Body ground Always Below 1
I35265 (c) Using an oscilloscope, check the signal waveform ac-
cording to the conditions, as shown in the chart.
Standard:
Tester connection Condition Specified condition
HP1R - SG5 While voice sound is being produced A waveform synchronized with sound is output
HP1L - SG5 While voice sound is being produced A waveform synchronized with sound is output
HP2R - SG6 While voice sound is being produced A waveform synchronized with sound is output
HP2L - SG6 While voice sound is being produced A waveform synchronized with sound is output
NG REPLACE MULTI-DISPLA Y CONTROLLER
SUB-ASSY
OK
REPLACE TELEVISION DISPLAY ASSY
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1649
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