TOYOTA HIGHLANDER 2001 Service Repair Manual

H45942
Airbag Sensor
Assy Center
A1724
Y 1
Combination Meter4A5
11
FL MAINShort Connector
GR
I15
Ignition SWBR
IB2 IF310
12 9MPX1
MPX2
A1722
1 IB2
3CC11 2
A11
Body ECUIL2
B9 54F
B10 7
6
121
C11
C11C12
IB F7 FL Block P51 1
2 2S30
S30 S31S31 MPD1
MPD2 9
A10MPX+
MPX-
MPX1
MPX2
MPX1
MPX2
3A12
2
3B 3K
13
1K7
IC
ALT
1
1ABR R G V G
BR
SB
YOW
SB 4 11
7
8
P B
G
WW
BatteryAM1 HEATERG5
Gate Way ECU A/C
Control Assembly
E6
Engine
Control Module Passenger Side J/B
V
IL21
MPX2
MPX1
3J12
3E1 3H5
MPX1
6
1C Instrument Panel J/B
AM1 2
4
IG1 Instrument Panel J/B
B BY
Center J/B T4
Theft Deterrent ECU(*1) (*1)12
SW with ECU Power Window Master
GR
V31
(*3) Center J/B
GSB *1: w/ Navigation System
*2: w/o Navigation System
*3: w/ Theft Deterrent System G
(*2)
18
29
12
12RBR 05-1518
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1708 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

H40452
Airbag Sensor Assy Center:
Combination Meter Assy:MPX1
C11-21
A17
MPX2
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1519
1709 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CONNECTOR
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the airbag sensor assy center and the combina-
tion meter assy.
OK:
The connectors are connected.
NG CONNECT CONNECTORS
OK
2 CHECK WIRE HARNESS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Disconnect the connector from the airbag sensor assy
center.
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A17-24 (MPX1) - C11-21AlwaysBelow 1 W
A17-24 (MPX1) -
A17-22 (MPX2)Always1 MW or Higher
NG REPAIR OR REPLACE WIRE HARNESS
(AIRBAG SENSOR ASSY CENTER -
COMBINATION METER ASSY)
OK

C82952
05-1520
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1710 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK COMBINATION METER ASSY
(a) Disconnect the connector from the combination meter
assy.
(b) Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
C11-21 - Body groundIgnition switch ON8 to 14 V
NG REPLACE COMBINATION METER ASSY
(SEE PAGE 71-10)
OK
REPLACE AIR BAG SENSOR ASSY CENTER (SEE PAGE 60-53)

- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1521
1711 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SRS WARNING LIGHT CIRCUIT MALFUNCTION (DOES NOT LIGHT
UP, WHEN IGNITION SWITCH IS TURNED TO ON)
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter.
When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch is
turned from the LOCK position to ON position, and then turns off automatically.
If there is a malfunction is the SRS, the SRS warning light lights up to inform the driver of the abnormality.
When terminals Tc and CG of the DLC3 are connected, the DTC is displayed by blinking the SRS warning
light.
WIRING DIAGRAM
see page 05-1517.
INSPECTION PROCEDURE
1 CHECK BATTERY
(a) Measure the voltage of the battery.
Standard: 11 to 14 V
NG REPLACE BATTERY
OK
2 CHECK WIRE HARNESS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the airbag sensor assy center.
(d) Connect the negative (-) terminal cable from the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
(f) Measure the resistance according to the value(s) in the table below.
OK:
The SRS warning light comes on.
NG REPAIR OR REPLACE WIRE HARNESS
(COMBINATION METER - BATTERY)
OK
REPLACE COMBINATION METER ASSEMBLY (SEE PAGE 71-10)
05269-04

- 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

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

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

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

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

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.