TOYOTA HIGHLANDER 2001 Service Repair Manual

H45693
Power Window Regulator
Master Switch Assy (Door ECU)
Multiplex Network Body ECUAirbag Sensor
Assembly
A17
B9
P5
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2053
2243 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CONTINUITY OF COMMUNICATION LINE
(a) Check the wire harness between the multiplex network body ECU, power window regulator master
switch assy (door ECU) and airbag sensor assembly.

B51827
P5
05-2054
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2244 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(1) Disconnect the connectors of the master switch, body ECU and air conditioner amplifier.
(2) Check the continuity between terminal P5-8 (MPX2) of the master switch vehicle's side connec-
tor and terminal B9-10 (MPX2) of the body ECU vehicle's side connector.
Standard: Continuity
(3) Check the continuity between terminal P5-7 (MPX1) of the master switch vehicle's side connec-
tor and terminal A17-22 (MPX2) of the airbag sensor assembly vehicle's side connector.
Standard: Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
2 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Inspect the power window regulator master switch assy
(door ECU) (power source input).
(1) Disconnect the master switch connector.
(2) Check the voltage of each terminal of the master
switch vehicle's side connector.
Standard:
Symbols (Terminal No.)ConditionSpecified Condition
CPUB (P5-9) @ Body groundConstant10 - 14 V
BDR (P5-10) @ Body groundConstant10 - 14 V
NG REPAIR OR REPLACE FUSE OR WIRE
HARNESS AND CONNECTOR
OK

B51828
P5
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2055
2245 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Inspect the power window regulator master switch assy
(door ECU) P5-2 (GND).
(1) Disconnect the master switch connector.
(2) Check the continuity between terminal P5-2 (GND)
of the master switch and the body ground.
Standard: Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY

05-1912
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2102 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1221/21 POWER WINDOW SWITCH CIRCUIT ON
DRIVER DOOR
CIRCUIT DESCRIPTION
This DTC is output when any switch of the power window regulator master switch assy (door ECU) is ON.
DTC No.DTC Detecting ConditionTrouble Area
B1221/21Any switch of the power window regulator master switch is
ONPower window regulator master switch assy (door ECU)
INSPECTION PROCEDURE
1 CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY
(a) Check if code B1221/21 will disappear but only B1211/11 (communication stop) will be output when
the master switch connector is disconnected.
(1) B1221/21 code output, proceed to A.
(2) B1211/11 code output, proceed to B.
B REPLACE POWER WINDOW REGULATOR
MASTER SWITCH ASSY
A
REPLACE MULTIPLEX NETWORK BODY ECU
0523I-02

B78721
MPX Line
D12
Front Door Lock Assy LH (Driver Side)5
L P5
Power Window Regulator
Master Switch Assy (Door ECU)
Passenger Side
Junction Block Assy
B
1E Instrument Panel
J/B AssyJ5
J/B
IA 6
14 4MW1
1D4L
65
W-B 48IB1
LMPX1
ACT+
ACTD 24
B12
4 16
2 B10
3
BR 3
2 14
4
B12 IB1 R6 10
209
W-L
L-W
R-L
W-B
CPUB
BDR
SIG
GNDKL LSWELSW
LULE
L
UL KUL
W-B
GYLGBR
W-B8
7
2
IB115
10
B9 IB2
IF3O Y GR
MPX2 Multiplex Network
Body ECU (Body ECU)
Instrument
Panel J/B
Assy
B
MPX1 MPX2
1
LSSR
05-1944
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
2134 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1222/22 DOOR LOCK SWITCH CIRCUIT ON DRIVER
DOOR
CIRCUIT DESCRIPTION
This DTC will be output when the driver door unlock switch (for key operation) of the power window regulator
master switch assy is on.
DTC NoDTC Detecting ConditionTrouble Area
B1222/22Stick of key lock and unlock switch

Power window regulator master switch assy (door ECU)

Front door lock assy LH (driver side)

Multiplex network body ECU
WIRING DIAGRAM
0526J-03

- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05-1945
2135 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK DIAGNOSTIC CODE OUTPUT
(a) Check if code B1222/22 will disappear but only B1211/11 (communication stop) will be output when
the master switch connector is disconnected.
(1) B1222/22 code output, proceed to A.
(2) B1211/11 code output, proceed to B.
B REPLACE MULTIPLEX NETWORK BODY ECU
A

B51545
Unlock
Lock
OFF
B61505
Unlock
Lock
05-1946
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
2136 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT FRONT DOOR LOCK ASSY LH
(a) Inspect the door lock assy continuity.
Standard:
Switch PositionTester ConnectionSpecified Condition
Lock3 @ 5Continuity
OFF-No continuity
Unlock4 @ 5Continuity
(b) Inspect the door lock motor operation.
Standard:
Measuring ConditionOperation
Battery positive - Terminal 1
Battery negative - Terminal 2Lock
Battery positive - Terminal 2
Battery negative - Terminal 1Unlock
(c) Inspect the position switch continuity.
Standard:
Measuring ConditionTester ConnectionSpecified Condition
Battery positive -
Terminal 2
Battery negative -
Terminal 1
1 @ 2Continuity
NG REPLACE FRONT DOOR LOCK ASSY RH
OK

B52424
Power Window Regulator
Master Switch Assy (Door ECU)
Front Door Lock Motor Assy
(Driver Side)
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05-1947
2137 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS
(a) Disconnect the connector from the master switch and
front door lock motor LH.
(b) Check the connector on the harness side.
Continuity:
Tester Connection (Switch @ Motor)Specified Condition
4 @ 4Continuity
14 @ 3Continuity
(c) Check the master switch connector on the wire harness
side.
Continuity:
Tester ConnectionSpecified Condition
4 @ Body groundNo continuity
14 @ Body groundNo continuity
Voltage:
Tester ConnectionSpecified Condition
4 @ Body ground0 V
14 @ Body ground0 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY

B78722
B10
LG P10
Power Window Regulator Switch Assy
(Passenger Side)
4
SU
4
5Y
SD11
IN221Multiplex Network
Body ECU
IN2GR B
PU
PD B1020 05-1948
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
2138 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1223/23 POWER WINDOW SWITCH CIRCUIT ON
PASSENGER DOOR
CIRCUIT DESCRIPTION
This DTC is output when any switch of the door control switch is on.
DTC NoDTC Detecting ConditionTrouble Area
B1223/23Stick of power window switch
Power window regulator switch assy (passenger side)

Multiplex network body ECU
WIRING DIAGRAM
0526K-02

B31305
4 5 6 7 8
B51844
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05-1949
2139 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT POWER WINDOW REGULATOR SWITCH ASSY (PASSENGER'S SIDE)
(a) Inspect the power window switch continuity.
Switch PositionTester ConnectionSpecified Condition
Up3 - 5Continuity
OFF-No continuity
Down4 - 5Continuity
NG REPLACE POWER WINDOW REGULATOR
SWITCH ASSY
OK
2 CHECK WIRE HARNESS
(a) Disconnect the connector from the door control switch.
(b) Check the connector on the wire harness side.
Continuity:
Tester ConnectionSpecified Condition
1 @ Body groundContinuity
4 @ Body groundNo continuity
5 @ Body groundNo continuity
Voltage:
Tester ConnectionSpecified Condition
1 @ Body ground0 V
4 @ Body ground0 V
5 @ Body ground0 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE MULTIPLEX NETWORK BODY ECU