Page 2025 of 2572
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1915
2105 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DRIVER POWER WINDOW DOES NOT OPERATE
CIRCUIT DESCRIPTION
The power window regulator master switch assy (door ECU) controls the driver side power window by itself
and drives the driver side power window motor.
NOTICE:
The power window system has a function with a large-scale multiplex communication. First of all,
inspect the communication function depending on ºhow to proceed with troubleshootingº and con-
firm that the communication system has no abnormality. Then finally perform the troubleshooting.
0523O-03
Page 2026 of 2572
B78733
Instrument Panel J/B Assy
I15
Ignition
Switch
AssyP5
Power Window Regulator
Master Switch Assy (Door ECU)
P6
Power Window
Regulator Motor Assy Front LH
Passenger Side J/B 4
IG1
AM1
W G10 3
IB2
1
1D
1A 1K
1C7
P FR DOORIG1BR
W
IL1 YCPUB
SIG
BDR
UP
DN
GND 11 U
D
W-BIB1
4L 8
7
IC AM1 6 21C 1G
16 1D
2
1IB2
IB13
3 2
8
VG10
V
GR 4
51
4L
W-B W-B2 209
2Y L
To
Battery
To
Battery
4N
W-B 1 05-1916
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2106 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
Page 2027 of 2572

B51850
B51851
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1917
2107 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK FUSE
(a) Check if the P FR DOOR 20 A, ECU B 7.5 A and IG1 7.5 A fuses are normal.
NG REPLACE FUSE
OK
2 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Check the power source voltage.
(1) Disconnect the master switch connector.
(2) Check the voltage of each terminal of the vehicle's
side connector of the master switch.
Standard:
Symbols (Terminal No.)ConditionSpecified Condition
CPUB (9) @ Body groundConstant10 - 14 V
BDR (10) @ Body groundConstant10 - 14 V
SIG (20) @ Body groundIgnition switch OFF " ON0 V "10 - 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Check the GND.
(1) Disconnect the master switch connector.
(2) Check the continuity between terminal 2 (GND) of
the vehicle's side connector of the master switch
and the body ground.
Standard: Continuity (constant)
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Page 2028 of 2572
B51852
05-1918
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2108 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK POWER WINDOW REGULATOR MOTOR ASSY LH (DRIVER'S SIDE)
(a) Disconnect the master switch connector.
(b) Inspect the door glass operation when the battery voltage
is applied between terminals 1 (UP) and 11 (DN) of the ve-
hicle's side connector of the master switch.
Standard:
Measuring ConditionOperational Direction
Battery positive - Terminal 1 (UP)
Battery negative - Terminal 11 (DN)Upward
Battery positive - Terminal 11 (DN)
Battery negative - Terminal 1 (UP)Downward
OK REPLACE POWER WINDOW REGULATOR
MASTER SWITCH ASSY
NG
Page 2029 of 2572

B51847
Driving Axis
ClockwiseCounterclock-
wise
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1919
2109 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 INSPECT POWER WINDOW REGULATOR MOTOR ASSY LH (DRIVER SIDE)
(a) Inspect the power window regulator motor assy LH (Driver side) operation.
NOTICE:
Do not apply the battery voltage, because the pulse sensor and limit switch could be damaged
if the battery voltage is applied to terminals 2, 3 and 6 of the power window regulator motor con-
nector.
Be sure to reset the power window regulator motor (initial position setting of limit switch) when
the driver's side power window regulator motor is installed to the regulator.
(1) Check that the motor operates smoothly when the
battery positive voltage is applied to each terminal
of the connector.
Standard:
Measuring ConditionOperational Direction
Battery positive - Terminal 5
Battery negative - Terminal 4Clockwise
Battery positive - Terminal 4
Battery negative - Terminal 5Counterclockwise
(b) Inspect the PTC operation inside the power window regulator motor.
NOTICE:
The inspection should be performed with the power window regulator and door glass installed to the
vehicle.
(1) Set a DC 400 A probe of the electrical tester in the wire harness of terminal 4 or 5.
NOTICE:
Match the arrow mark of the probe with the current direction.
(2) Set the door glass in the fully closed position.
(3) When 60 seconds have elapsed after the door glass is fully closed, check now long the current
takes to charge, from approximately 16 - 34 A into 1 A or less, when the power window switch
is turned UP once again.
Standard: Approximately 4 - 90 seconds
(4) When approximately 60 seconds have elapsed after the inspection of the current cut-off, check
that the door glass goes down when the power window regulator switch is turned DOWN.
NG REPLACE POWER WINDOW REGULATOR
MOTOR ASSY LH
OK
REPAIR OR REPLACE HARNESS AND CONNECTOR
Page 2030 of 2572

05ISE-02
I39965
I38225
Completion mark (orange)
I39965
- DIAGNOSTICSNAVIGATION SYSTEM
05-1803
1993 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SCREEN NOISE AUTOMATIC ADJUSTMENT
HINT:
This adjustment is performed to reduce noise when screen noise occurs upon replacing the multi-dis-
play, the navigation ECU or the television camera ECU.
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.
Perform both procedures below when the multi-display is replaced.
1. When either the multi-display or the navigation ECU is replaced:
(a) Turn the ignition switch to the ACC position and wait for
at least 6 seconds to activate the diagnostic mode (see
page 05-1784).
(b) Select ºNavigation Checkº from the ºDiagnosis MENUº
screen.
(c) The screen enters ºNavigation Checkº with a beeping
sound. Adjustment is completed when the completion
mark is displayed.
(d) Cancel the diagnostic mode (see page 05-1784).
2. When either the multi-display or the television camera ECU is replaced:
(a) Turn the ignition switch to the ACC position and wait for
at least 6 seconds to activate the diagnostic mode (see
page 05-1784).
(b) Select ºCamera Checkº from the ºDiagnosis MENUº
screen.
Page 2031 of 2572
I39966
05-1804
- DIAGNOSTICSNAVIGATION SYSTEM
1994 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(c) Adjustment is completed when the steering angle setting
screen is displayed.
(d) Cancel the diagnostic mode (see page 05-1784).
HINT:
If the automatic adjustment is not performed (only step 1)
only upon replacing the multi-display, a beeping sound
can be heard for 3 seconds (while the initial screen is dis-
played) after turning the ignition switch to the ACC posi-
tion.
Perform the automatic adjustment again if a beeping
sound can be heard within 3 seconds.
Page 2032 of 2572
- DIAGNOSTICSAUDIO SYSTEM
05-1681
1871 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SOUND QUALITY IS BAD ONLY WHEN CD IS PLAYED (VOLUME IS
TOO LOW)
INSPECTION PROCEDURE
1 REPLACE CD WITH ANOTHER AND RECHECK
(a) Replace the CD with another one and recheck.
(1) Check the installation condition of the radio receiver assembly.
OK: Malfunction disappears.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
CD FAULTY
055LZ-10