Page 1369 of 2572
E72975
Instrument Panel Junction Block
Front Side View:
1J
1J-4
05-1578
- DIAGNOSTICSLIGHTING SYSTEM
1768 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Disconnect the 1J connector from the instrument panel
junction block assy.
(b) Using a service wire, connect 1J-4 of the instrument pan-
el junction block side and body ground.
OK: Taillamp comes on.
NG Go to step 4
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK
ASSY - MULTIPLEX NETWORK BODY ECU)
Page 1370 of 2572
E72976
Instrument Panel Junction Block
Back Side View:
1B 1H
1H-4 1B-4
1B-1 1
- DIAGNOSTICSLIGHTING SYSTEM
05-1579
1769 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
1B-4 - Body groundConnect 1J-4 and
body ground10 to 14 V
1B-1 1 - Body groundConnect 1J-4 and
body ground10 to 14 V
1H-4 - Body groundConnect 1J-4 and
body ground10 to 14 V
NG Go to step 5
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (EACH OF TAILLAMP CIRCUIT)
Page 1371 of 2572
E72975
Instrument panel Junction Block
Front Side View:
1J
1J-4
05-1580
- DIAGNOSTICSLIGHTING SYSTEM
1770 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY
(a) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
1J-4 - Body groundAlways10 to 14 V
NG Go to step 6
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
Page 1372 of 2572
E72976
Instrument Panel Junction Block
Back Side View:
1A
1A-1
- DIAGNOSTICSLIGHTING SYSTEM
05-1581
1771 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK HARNESS AND CONNECTOR(POWER SOURCE CIRCUIT)
(a) Disconnect the 1A connector from the instrument panel
junction block assy.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
1A-1 - Body groundAlways10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY
Page 1373 of 2572

05IQ2-01
SettingLIGHT2 LIGHT1 NORMAL DARK2
DARK1
Lighting brightnessDark Bright
OLD
CURRENTBrightness of the sur-
rounding when lightingLighting delayDelay of turn-
ing light off**2
Old logic
New logic **1
('97/8-)6 sec.
15 sec.6 sec.
15 sec.3 sec.
15 sec.
**1: The new one has the logic to light up two times brighter than the old logic.
**2: Delay time until the headlamp is turned on when it suddenly gets dark.
- DIAGNOSTICSLIGHTING SYSTEM
05-1537
1727 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CUSTOMIZE PARAMETERS
HINT:
The followings are the possible items to be customized.
NOTICE:
After confirming whether the items of the customer's request are applicable or not for the cus-
tomized items, perform the customize operation.
Be sure to record the current value before customizing.
In case of performing the troubleshooting, pay attention as there is a possibility that the func-
tion is OFF by customizing. (Example: In case of the symptom in which ºThe wireless operation
does not functionº, check that the wireless operation is not OFF by customizing, then perform
the troubleshooting.)
ILLUMINATED ENTRY
DISPLAY(ITEM)DEFAULTCONTENTSSETTING
I/L ON / UNLOCK
(Interior lamp ON w/ door
key unlock)
ON
Function to light up the interior lamp*, ignition lamp and step
lamp when unlocking with the door key cylinder.
*: Interior lamp comes on when the interior lamp switch is at
the DOOR position.
ON / OFF
LIGHTING TIME
(Lighting Time)15 sTo change the lighting time after closing the door. (It will
quickly fade out in case of turning the ignition ON.)7.5 s / 15 s / 30 s
LIGHT CONTROL
HINT:
Sensitivity adjustment can hardly be confirmed. Please check by customer's actual driving.
DISPLAY(ITEM)DEFAULTCONTENTSSETTING
SENSITIVITY
(Turn ON luminous
intensity)
NORMALTo adjust the sensitivity of the lighting illumination.
Refer to the *1 illustration.DARK2 / DARK1 / NORMAL
/ LIGHT1 / LIGHT2
LIGHT CTRL TYPE
(Control Type)CURRENTTo change the control logic when the light control switch is in
the AUTO position. Refer to the *2 illustration.CURRENT / OLD
Illustration of *1
Illustration of *2
Page 1374 of 2572
05IRZ-02
I38215
I38216
I38217
05-1760
- DIAGNOSTICSNAVIGATION SYSTEM
1950 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DISPLAY CHECK MODE (COLOR BAR CHECK)
HINT:
This mode checks the color display on the multi-display.
Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.
1. Enter diagnostic mode (see page 05-1784).
2. Select ºDisplay Checkº from the ºDiagnosis MENUº
screen.
3. Select ºColor Bar Checkº from the ºDisplay Checkº
screen.
4. Select a color bar from the ºColor Bar Check Modeº
screen.
HINT:
The entire screen turns to the color or stripe selected.
Touching the display will return to the ºColor Bar Checkº
screen.
Page 1375 of 2572

05IS1-02
I38215
I38220
I38221
*1
*2 *3
05-1762
- DIAGNOSTICSNAVIGATION SYSTEM
1952 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DISPLAY CHECK MODE (PANEL SWITCH CHECK)
HINT:
This mode checks the panel switch operation response on the multi-display.
Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.
1. Enter diagnostic mode (see page 05-1784).
2. Select ºDisplay Checkº from the ºDiagnosis Menuº
screen.
3. Select ºPanel Switch Checkº from the ºDisplay
Checkº screen.
4. Operate each switch and check that the switch name
and condition is correctly displayed.
HINT:
Pressing the ºDISPLAYº switch for 3 seconds will exit the
diagnostic mode.
DisplayContents
Push switch name/*1Name of the pressed switch is displayed.
If more than one switch is pressed, ºMULTIPLEº is displayed.
Rotary switch name/*2Name of the rotary switch is displayed.
Rotary switch direction/*3Direction of the rotary switch is rotated.
Page 1376 of 2572
05IS0-02
I38215
I38218
I38219
- DIAGNOSTICSNAVIGATION SYSTEM
05-1761
1951 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DISPLAY CHECK MODE (TOUCH SWITCH CHECK)
HINT:
This mode checks the touch switch operation condition on the multi-display.
Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.
1. Enter diagnostic mode (see page 05-1784).
2. Select ºDisplay Checkº from the ºDiagnosis MENUº
screen.
3. Select ºTouch Switch Checkº from the ºDisplay
Checkº screen.
4. Touch the display anywhere in the open area to per-
form the check when the ºTouch Switch Checkº
screen is displayed.
HINT:
A º+º mark is displayed where the display is touched.
The º+º mark remains on the display even after the finger
is removed.