TOYOTA HIGHLANDER 2001 Service Repair Manual

I39180
AMP+R4
I39178
S22
Stereo Component Amplifier Assy:
AMP+
I39175
R4
AMP+
Radio Receiver Assy:
- DIAGNOSTICSAUDIO SYSTEM
05-1639
1829 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 connectionConditionSpecified condition
AMP+ - Body groundRadio receiver assy ON10 to 14 V
NG REPLACE RADIO RECEIVER ASSY (SEE PAGE
67-6)
OK
2 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 connectionConditionSpecified condition
AMP+ - AMP+AlwaysBelow 1 W
AMP+ - Body groundAlways10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK

I39176
ACC
+B
GND
S23
S22
05-1640
- DIAGNOSTICSAUDIO SYSTEM
1830 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT STEREO COMPONENT AMPLIFIER ASSY(+B, ACC, GND)
(a) Disconnect the connectors from the stereo component
amplifier assy.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified condition
GND - Body groundAlwaysBelow 1 W
(c) Measure the voltage according to the values in the table
below.
Standard:
Tester connectionConditionSpecified condition
+B - GNDAlways10 to 14 V
ACC - GNDIgnition SW ACC10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1632)

05-1680
- DIAGNOSTICSAUDIO SYSTEM
1870 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CD CANNOT BE EJECTED
INSPECTION PROCEDURE
1 PRESS ºEJECTº AND CHECK OPERATION
(a) Press ºEJECTºand check the operation.
(1) Press the CD EJECT switch of the radio receiver assembly for 2 seconds or more to see if the
CD is ejected.
OK: CD is ejected.
Reference:
If the CD is not ejected, bring the vehicle in for repair.
Do not attempt to remove it by force.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
2 CHECK IF A PROPER CD IS INSERTED
(a) Check that a normal audio CD is inserted.
(1) Check in what conditions the sound skipping occurs.
OK: Driving on a bad road.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
3 REPLACE CD WITH ANOTHER AND RECHECK
(a) Replace the CD with another and recheck.
(1) Check the installation condition of the radio receiver assembly.
OK: Installed properly.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
CD FAULTY
05ASI-06

- DIAGNOSTICSNAVIGATION SYSTEM
05-1805
1995 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
BLACK SCREEN (NO IMAGE APPEARS ON NAVIGATION AND
AUDIO SCREEN)
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
(a) Check that the display is not in ºScreen OFFº mode.
OK: The display setting is not in ºScreen OFFº mode.
NG CHANGE SCREEN TO ºSCREEN ONº MODE
OK
2 CHECK IMAGE QUALITY SETTING
(a) Check if screen color quality can be set.
OK: Switching is possible.
OK PRESS PANEL SWITCH ºDISPLAYº AND SET
SCREEN COLOR QUALITY TO NORMAL
NG
3 CHECK CABIN
(a) Check if condensation is likely to occur, or the temperature is high or low (extremely cold) in the cabin.
HINT:
This problem occurs when the cabin is humid and the temperature rapidly changes. This condition may pro-
duce condensation, resulting in a short circuit.
OK: The above condition is not observed.
NG SET CABIN TEMPERATURE TO APPROPRIATE
DEGREES (20 TO 30
C) (68 TO 86
F)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)
05ISF-02

I38223
05-1806
- DIAGNOSTICSNAVIGATION SYSTEM
1996 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
ILLUMINATION FOR PANEL SWITCH DOES NOT COME ON WITH
TAIL SWITCH ON
INSPECTION PROCEDURE
1 DISPLAY CHECK MODE(VEHICLE SIGNAL CHECK MODE)
(a) Enter the ºDisplay Checkº mode (Vehicle Signal Check Mode) (see page 05-1763).
(b) Turn the light control switch TAIL or ON and OFF.
Standard:
TAIL SwitchDisplay
TAIL or ONON
OFFOFF
HINT:
This display is updated once per second. As a result, it is normal
for the display to lag behind the actual change in the switch.
OK REPLACE MULTI-DISPLA Y
(SEE PAGE 67-8)
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)
05ISG-02

I39088
- DIAGNOSTICSNAVIGATION SYSTEM
05-1807
1997 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DISPLAY DOES NOT DIM (NIGHT SCREEN) WITH TAIL SWITCH
ON
INSPECTION PROCEDURE
1 CHECK SYSTEM
(a) Turn the light control switch to the TAIL or HEAD position.
Check if the illumination of the switches such as on the radio receiver assy comes on.
OK: Illumination of the switches comes on.
NG GO TO COMBINATION METER SYSTEM (SEE
PAGE 05-1868)
OK
2 CHECK IMAGE QUALITY SETTING
(a) Enter the display adjustment screen by pressing the ºDIS-
PLAYº switch.
(b) Turn the light control switch to TAIL.
(c) Check if ºDAY MODEº on the display adjustment is ON.
OK: ºDAY MODEº is ON.
OK TURN FORCED ºDAY MODEº SETTING OFF
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)
05ISH-02

I38221
05-1808
- DIAGNOSTICSNAVIGATION SYSTEM
1998 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
PANEL SWITCH DOES NOT FUNCTION
INSPECTION PROCEDURE
1 CHECK THE PANEL SWITCH
(a) Check for foreign matter around the switch that might prevent operation.
OK: No foreign matter is found.
NG REMOVE ANY FOREIGN MATTER FOUND
OK
2 DISPLAY CHECK MODE(PANEL SWITCH CHECK MODE)
(a) Enter the ºDisplay Checkº mode (Panel Switch Check Mode) (see page 05-1762).
(b) Operate the abnormal switch and check if the switch
name and status are correctly displayed.
OK: The switch name and status are correctly dis-
played as operated.
OK REPLACE MULTI-DISPLA Y
(SEE PAGE 67-8)
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)
05ISI-02

I38219
- DIAGNOSTICSNAVIGATION SYSTEM
05-1809
1999 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TOUCH PANEL SWITCH DOES NOT FUNCTION
INSPECTION PROCEDURE
1 CHECK TOUCH PANEL
(a) Check for dirt on the display surface.
OK: The display surface is clean.
NG REMOVE ANY DIRT FOUND AND RECHECK
TOUCH PANEL
OK
2 DISPLAY CHECK MODE(TOUCH SWITCH CHECK)
(a) Enter the ºDisplay Checkº mode (Touch Switch Check) (see page 05-1761).
(b) Touch the display in the area where the abnormal switch
occurs.
OK: A º+º mark appears at the touched position.
OK REPLACE MULTI-DISPLA Y
(SEE PAGE 67-8)
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)
05ISJ-02

I39089
I39090
I39091
05-1810
- DIAGNOSTICSNAVIGATION SYSTEM
2000 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SCREEN FLICKER OR COLOR DISTORTION
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
(a) Enter the display adjustment screen by pressing the ºDIS-
PLAYº switch.
(b) Reset display settings (contrast, brightness) and check if
the screen appears normal.
(c) Press the ºINFOº switch and then the ºScreen Settingº
switch.
(d) Set the ºBackground Colorº to ºGreenº (initial setting) and
check if it is normal.
OK: Returns to normal.
OK END
NG
2 CHECK CABIN
(a) Check if the cabin temperature is -20
C (-4.0
F) or less.
OK: Cabin is warmer than -20
C (-4.0
F).
NG HEAT THE CABIN AND RECHECK THE
TEMPERATURE
OK
05ISK-02

I38217
I38230
- DIAGNOSTICSNAVIGATION SYSTEM
05-181 1
2001 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 DISPLAY CHECK MODE(COLOR BAR CHECK MODE)
(a) Enter the ºDisplay Checkº mode (Color Bar Check Mode) (see page 05-1760).
(b) Check that color bars match the displayed names.
OK: Color bars match the displayed names.
NG REPLACE MULTI-DISPLA Y
(SEE PAGE 67-8)
OK
4 NAVIGATION CHECK MODE(NAVI COLOR BAR CHECK)
(a) Enter the ºNavigation Checkº mode (NAVI Color Bar Check) (see page 05-1766).
(b) Check that color bars match the displayed names.
OK: Color bars match the displayed names.
OK REPLACE MULTI-DISPLA Y
(SEE PAGE 67-8)
NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1778)