TOYOTA HIGHLANDER 2001 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 871 of 2572
I39179
Stereo Component Amplifier Assy:
RL+RR+
FR+FL+
RL-
RR-FR-
FL-
S23
I38233
Front No.1 Speaker Assy:
Rear Speaker Assy:
F10
F11
R9
R10
I38999
Front No.2 Speaker Assy:
T11
T12
05-1662
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1852 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK HARNESS AND CONNECTOR(STEREO COMPONENT AMPLIFIER ASSY -
SPEAKER ASSY)
(a) Disconnect the connectors from the stereo component
amplifier assy and speakers.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionSpecified
condition
FL+ - 1 (Front No.1 speaker assy LH)Below 1 W
FL- - 2 (Front No.1 speaker assy LH)Below 1 W
FR+ - 1 (Front No.1 speaker assy RH)Below 1 W
FR- - 2 (Front No.1 speaker assy RH)Below 1 W
FL+ - 1 (Front No.2 speaker assy LH)Below 1 W
FL- - 2 (Front No.2 speaker assy LH)Below 1 W
FR+ - 1 (Front No.2 speaker assy RH)Below 1 W
FR- - 2 (Front No.2 speaker assy RH)Below 1 W
RL+ - 1 (Rear speaker assy LH)Below 1 W
RL- - 2 (Rear speaker assy LH)Below 1 W
RR+ - 1 (Rear speaker assy RH)Below 1 W
RR- - 2 (Rear speaker assy RH)Below 1 W
FL+ - Body ground10 kW or higher
FL- - Body ground10 kW or higher
FR+ - Body ground10 kW or higher
FR- - Body ground10 kW or higher
RL+ - Body ground10 kW or higher
RL- - Body ground10 kW or higher
RR+ - Body ground10 kW or higher
RR- - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
7 INSPECT FRONT NO. 1 SPEAKER ASSY
(a) Resistance check
(1) Measure the resistance between the terminals of the speaker.
NOTICE:
The speaker should not be removed for checking.
Standard: 2 W
NG REPLACE FRONT NO. 1 SPEAKER ASSY
(SEE PAGE 67-10)
OK
Page 872 of 2572
- DIAGNOSTICSAUDIO SYSTEM
05-1663
1853 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
8 INSPECT FRONT NO. 2 SPEAKER ASSY
(a) Check that malfunction disappears when another speaker in a good condition is installed.
OK: Malfunction disappears.
HINT:
Connect the connector to the speaker.
When there is a possibility that either right or left front speaker is defective, inspect by interchanging
the right one and the left one.
OK REPLACE FRONT NO. 2 SPEAKER ASSY
(SEE PAGE 67-1 1)
NG
9 INSPECT REAR SPEAKER ASSY
(a) Resistance check
(1) Measure the resistance between the terminals of the speaker.
NOTICE:
The speaker should not be removed for checking.
Standard: 2 W
NG REPLACE REAR SPEAKER ASSY
(SEE PAGE 67-12)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)
Page 873 of 2572
I39182
Stereo Component Amplifier Assy
Radio Receiver Assy
(Shielded)(Shielded)
FL+ B
S22 F. L F. R R.L R.R
S226 S2213 S2214
WR G
FR+ RL+RR+ SLD R4 10
B WR G 12 IR216
5IR2
IR2
IR2
IR298 19 18
R4
R4
R4
R4 13
4
3 (*1)
(*1)
(*1)
(*1)(*1)
(*1)
(*1)
(*1)
*1: w/ Rear Seat Entertainment System
- DIAGNOSTICSAUDIO SYSTEM
05-1669
1859 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
AMP SOUND SIGNAL CIRCUIT (RADIO RECEIVER ASSY - AMP)
CIRCUIT DESCRIPTION
The radio receiver assy sends a sound signal to the stereo component amplifier assy through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assy, and then is 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 stereo component amplifier assy or speaker.
WIRING DIAGRAM
05CL5-04
Page 874 of 2572
I39175
Radio Receiver Assy:
FR+
FL+
RL+R4
RR+
SLD
I39178
Stereo Component Amplifier Assy:
F. L
F. R
R.R
R.L
S22
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1860 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(RADIO RECEIVER ASSY - STEREO
COMPONENT AMPLIFIER ASSY)
(a) Disconnect the connectors from the radio receiver assy
and stereo component amplifier assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionSpecified condition
FL+ - F.LBelow 1 W
FR+ - F.RBelow 1 W
RL+ - R.LBelow 1 W
RR+ - R.RBelow 1 W
FL+ - Body ground10 kW or higher
FR+ - Body ground10 kW or higher
RL+ - Body ground10 kW or higher
RR+ - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)
Page 875 of 2572
I40722
Multi-display Controller Sub-AssyRadio Receiver Assy
(Shielded)(Shielded)
R+ B
R29 R+R-L+ L-
R299 R298 R297
WR G
R-L+ L- SG1
R2911
B WR G 7 IP18
10
2 3 4 5
R22
R22
R22
R22 6
5
4 IP1
IP1
IP1
IP1 (*1)
(*1)
(*1)
(*1)(*1)
(*1)
(*1)
(*1)
*1: w/ Rear Seat Entertainment System
- DIAGNOSTICSAUDIO SYSTEM
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
RSE SOUND SIGNAL CIRCUIT (MULTI-DISPLA Y CONTROLLER
SUB-ASSY - RADIO RECEIVER ASSY)
CIRCUIT DESCRIPTION
The multi-display controller sub-assy sends a sound signal to the radio receiver assy through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assy, and then is 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 stereo component amplifier assy or speaker.
WIRING DIAGRAM
05IRS-03
Page 876 of 2572
I39175
Radio Receiver Assy:
R+
L-
L+R4
R-
I34639
Multi-display Controller Sub-Assy:
L-
L+ R+
R-
R29
SG1
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1862 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(MULTI-DISPLA Y CONTROLLER
SUB-ASSY - RADIO RECEIVER ASSY)
(a) Disconnect the connectors from the radio receiver assy
and multi-display controller sub-assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionSpecified condition
R+ - R+Below 1 W
R- - R-Below 1 W
L+ - L+Below 1 W
L- - L-Below 1 W
R+ - Body ground10 kW or higher
R- - Body ground10 kW or higher
L+ - Body ground10 kW or higher
L- - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)
Page 877 of 2572
I34950
Multi-display Controller
Sub-Assy
Radio Receiver Assy
MUTE6
P20
IP1V12
R29 LMUT R22
(*1) (*1)
*1: w/ Rear Seat Entertainment System 05-1654
- DIAGNOSTICSAUDIO SYSTEM
1844 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MUTE SIGNAL CIRCUIT (FROM MULTI-DISPLA Y CONTROLLER
SUB-ASSY)
CIRCUIT DESCRIPTION
The radio receiver assy controls the volume according to the LMUT signal from the multi-display controller
sub-assy .
The LMUT signal is send to reduce noise and pop sound when switching mode, etc.
WIRING DIAGRAM
05IRP-03
Page 878 of 2572
I39180
R4
MUTE
I39175
R4
Radio Receiver Assy:
MUTE
I34639
Multi-display Controller Sub-assy:
R29
LMUT
- DIAGNOSTICSAUDIO SYSTEM
05-1655
1845 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT RADIO RECEIVER ASSY
(a) Measure the voltage according to the value in the table
below.
Standard:
Tester connectionConditionSpecification
MUTE -Body ground
Turn ignition switch to
ACC, RSE system is play-
ing " Changing
Above 3.5 V " Below 1 V
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE PAGE
05-1632)
2 CHECK HARNESS AND CONNECTOR(RADIO RECEIVER ASSY - MULTI-DISPLA Y
CONTROLLER SUB-ASSY)
(a) Disconnect the connectors from the radio receiver assy
and multi-display controller sub-assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified condition
MUTE - LMUTAlwaysBelow 1 W
MUTE - Body groundAlways10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
Page 879 of 2572
I34639
R29
LMUT
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1846 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT MULTI-DISPLA Y CONTROLLER SUB-ASSY
(a) Disconnect the connectors from the multi-display control-
ler sub-assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified condition
LMUT - Body groundTurn ignition switch to
ACCAbove 3.5 V
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
REPLACE MULTI-DISPLA Y CONTROLLER SUB-ASSY (SEE PAGE 67-23)
Page 880 of 2572
I39185
Radio Receiver Assy Stereo Component Amplifier Assy
Passenger Side J/B
Center J/B
Engine Room J/B
Instrument Panel J/BI15
Ignition SW
F7
Fusible Link BlockAMP+
ACC
+B
GND J18
J/C AMP+
RAD No.1
D.C.C
RAD No.2
AM1ACC AM1
BatteryFL MAIN
J19
J/CS221
S237 S222
A A GGP
W
IO114 IR26
4D8
4E2V
Y R43
L-B
3C4
3C5
R-Y
IR21
R-Y
IL12
LG
IK320
L-Y
2C4
2I1
2 3
WL
1C6 1C2
2 1 1A1 1H1
B
W
12ALT
3W
BB
BFW-B A A W-BAW-B
S2312 05-1638
- DIAGNOSTICSAUDIO SYSTEM
1828 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
POWER SOURCE CIRCUIT (STEREO COMPONENT AMPLIFIER
ASSY)
CIRCUIT DESCRIPTION
This circuit provides the power to the stereo component amplifier assy.
WIRING DIAGRAM
05IRK-01