TOYOTA HIGHLANDER 2001 Service Repair Manual

B78720
ACT+ PKL
ACT-PKUL 8
LSWP B10
B12
B-W V
SB
J5
J/CBRB10
B12B10
CB 8
5
41
2 IN2
LIN2
IN2
IN1
IN1 GR
V
BR
W
R 3
16 4 D13
Front Door Lock Assy RH
2 L
UL
LSSR
UL W-B
E
4M4L 10
65 2
IN1 W-B
1441E
W-B1D
IA W-B13
1
6 11Multiplex Network
Body ECU
Passenger Side
J/B
Instrument Panel
J/B AssyWL
B
C J5
J/C
WL 05-1950
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
2140 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1224/24 Door lock switch circuit on passenger door
CIRCUIT DESCRIPTION
This DTC is output when the passenger door unlock switch (for key operation) of the door control switch is
on.
DTC No.DTC Detecting ConditionTrouble Area
B1224/24Stick of key lock and unlock switch

Door control switch assy (passenger side)

Front door lock assy RH

Multiplex network body ECU
WIRING DIAGRAM
0526L-04

B51554
1 2
3 4 65
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05-1951
2141 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT DOOR CONTROL SWITCH ASSY
(a) Inspect the door control switch continuity.
Switch PositionTester ConnectionSpecified Condition
Lock3 - 6Continuity
OFF-No continuity
Unlock3 - 5Continuity
NG REPLACE DOOR CONTROL SWITCH ASSY
OK

B51543
Unlock
Lock
OFF
B51544
Unlock
Lock
05-1952
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
2142 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT FRONT DOOR LOCK ASSY RH
(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
5 @ 6Continuity
NG REPLACE FRONT DOOR LOCK ASSY RH
OK

B61507
Front Door Lock Assy RH Multiplex Network Body ECU
B10
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05-1953
2143 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS
(a) Disconnect the connector from the body ECU B10 con-
nector and front door lock assy RH connector.
(b) Check the connector on the wire harness side.
Continuity:
Tester Connection
(Body ECU @ Door Lock)Specified Condition
B10-8 @ 3Continuity
B10-13 @ 4Continuity
(c) Check the master switch connector on the wire harness
side.
Continuity:
Tester Connection
(Body ECU or Door Lock
@ Body ground)
Specified Condition
B10-8 or 3 @ Body groundNo continuity
B10-13 or 4 @ Body groundNo continuity
Voltage:
Tester Connection
(Body ECU or Door Lock
@ Body ground)
Specified Condition
B10-8 or 3 @ Body ground0 V
B10-13 or 4 @ Body ground0 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE MULTIPLEX NETWORK BODY ECU

B60591
P6
Power Window Regulator
Motor Assy Front LHP5
Power Window Regulator
Master Switch Assy (Door ECU)
2 6
315
5
13 PLS
LMTW
OPLS
LMT
R E
SGND
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1913
2103 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1231/31 JAM PROTECTION LIMIT SWITCH CIRCUIT
ON DRIVER DOOR
DTC B1232/32 JAM PROTECTION PULSE SWITCH CIRCUIT
ON DRIVER DOOR
CIRCUIT DESCRIPTION
This DTC is output when the power window regulator motor assy malfunctions.
DTC No.DTC Detecting ConditionTrouble Area
B1231/31Open in power window regulator motor assy LH limit switch
system
Power window regulator motor assy LH

Wire harness
B1232/32Open or short in power window regulator motor assy LH
pulse sensor system
Power window regulator motor assy LH

Wire harness
WIRING DIAGRAM
0523H-03

B51843
Power Window Regulator
Master Switch Assy (Door ECU)
Power Window Regulator
Motor Assy LH
05-1914
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2104 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS
(a) Disconnect the connectors of the power window regulator
master switch assy and power window regulator motor
assy LH.
(b) Check the continuity between the master switch and reg-
ulator motor.
Standard:
ItemSymbols (Terminal No.)
Master switch @ Regulator motorSpecified Condition
Limit switchLMT (5) @LMT (2)
SGND (13) @ E (3)Continuity
Pulse sensorPLS (15) @ PLS (6)
SGND (13) @ E (3)Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE POWER WINDOW REGULATOR MOTOR ASSY LH
(DRIVER SIDE)

05-2070
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2260 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1262/62 A/C ECU COMMUNICATION STOP
CIRCUIT DESCRIPTION
B1262/62 will be output when the communication between the air conditioner amplifier assy (A/C ECU) and
multiplex network body ECU stops for more than 10 seconds.
DTC No.DTC Detecting ConditionTrouble Area
B1262/62No communication from A/C ECU for more than 10 seconds
Air conditioner amplifier assy (A/C ECU)

Wire harness
05240-05

B78729
Instrument Panel
J/B Assy
21 P5
Power Window Regulator
Master Switch Assy (Door ECU)
Engine
Room
J/BPassenger Side J/B
C11
Combination Meter Assy (Meter ECU)Air conditioner
Amplifier Assy
(A/C ECU) 7
5
1K 2IMPX1
IL2 V
IB2 8
SB
W-B Short
Connector
MPX-7
4
W-B MPX- BR
G
Y4F
4A
2
9 2A
1
IB F7
FL Block
AssyBR W-L
5
IC3
12
11
Battery13 3J
3E6 2
+BGND
123J
3F Center J/B 2
1
FL MAINS31
A11
A10
A10
G A1012
W
1 1G 10
1 3
WW
D.C.C.ECU-B
R
MPX+
Center
J/B
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2071
2261 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

B51594
A11
A10
C11 Combination Meter Assy (Meter ECU)
Power Window Regulator
Master Switch Assy (Door ECU) Air Conditioner Amplifier Assy (A/C ECU)
P5 05-2072
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
2262 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CONTINUITY OF COMMUNICATION LINE
(a) Inspect the wire harness between the combination meter assy (meter ECU), air conditioner amplifier
assy (A/C ECU) and power window regulator master switch assy (door ECU).

B51596
A10
- DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05-2073
2263 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(1) Disconnect the connectors of the air conditioner amplifier, master switch and meter assy.
(2) Inspect the continuity between terminal A10-9 (MPX-) of the air conditioner amplifier vehicle's
side connector and terminal C11-21 (MPX-) of the meter assy vehicle's side connector.
Standard: Continuity
(3) Inspect the continuity between terminal A11-2 (MPX+) of the air conditioner amplifier vehicle's
side connector and terminal P5-7 (MPX1) of the master switch.
Standard: Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
2 CHECK AIRCONDITIONER AMPLIFIER ASSY
(a) Inspect the air conditioner amplifier assy (A/C ECU) (power source input).
(1) Disconnect the air conditioner amplifier connector A10.
(2) Inspect the voltage between terminal A10-12 (+B) of the vehicle's side connector and the body
ground.
Standard: 10 - 14 V
NG REPAIR OR REPLACE FUSE OR WIRE
HARNESS AND CONNECTOR
OK