Page 1457 of 2572
A67586
F12
Fuel Pump Wire Harness Side
05-358
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
548 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Check the wire harness between the fuel pump and body
ground.
(1) Disconnect the F12 fuel pump connector.
(2) Measure the resistance between the wire harness
side connector and body ground.
Standard:
Tester ConnectionSpecified Condition
F12-5 - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE ECM (See page 10-9)
Page 1458 of 2572
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1929
2119 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REMOTE OPERATION VIA MASTER SWITCH IS IMPOSSIBLE IN
THE OTHER DOOR (OPERATION VIA EACH DOOR SWITCH IS
POSSIBLE)
CIRCUIT DESCRIPTION
When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats
multiply to the body ECU, then the body ECU drives the power window motor for the other seats.
NOTICE:
The power window system has a function with a large-scale multiplex communications. First of all,
inspect the communication function depending on the ºhow to proceed with troubleshootingº, and
check that there is no abnormality in the communication system. Then finally proceed with the trou-
bleshooting.
0523N-06
Page 1459 of 2572
B78735
P5
Power Window Regulator Master Switch Assy (Door ECU)
Multiplex Network Body ECU
P10
Power Window Regulator Switch
Assy (Passenger Side)P11
Power Window Regulator
Switch Assy Rear (Rear LH)
Passenger Side J/BCommunication Line
P12
Power Window Regulator
Switch Assy Rear (Rear RH)Passenger
Side J/B
MPX1
MPX2
RLURLD
14
13B11
W
O
BGRB10 212098
BR LGW-B MPX1MPX2
B11B11
B11B12
B10PUPDRRU RRD
YLGR
L-OP
LG-BGR
L-OR
LG-B
45 4 11
9
SU SD
14
54
5
SU
SDSU SD11
IN2 BB1
BC14H
4N 4L
IN2
1
1
W-B
2
12
BA 4L4L IN1
12 BB1
BB1BC1
BC1 W-BW-B
W-B
W-B
W-B W-B W-B4
49
BB IC IC 10
7IA1IO2 IO2
IA1 17 5GND1
W-BEE
E 8
7
10 6
B10
B9
7
167
71
4N 1
W-B 05-1930
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2120 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
Page 1460 of 2572
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1931
2121 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HAND-HELD TESTER
(a) Monitor code
(1) Using the hand-held tester, inspect the monitor code of the door ECU.
HINT:
The monitor code shows the switch condition when a DTC is output.
When a monitor code is indicated while the switch is not operated, the switch is detected in being stuck.
When a monitor code is not indicated while the switch is operated, it is detected that the switch contact
condition is bad.
DTC CodeItemMonitor Item
B1221/21Driver's side switch 1 (operating)Any switch of the power window regulator master switch is ON
NG Go to step 3
OK
Page 1461 of 2572

B51823
B12B11B10B9
05-1932
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2122 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK MULTIPLEX NETWORK BODY ECU
(a) Inspect the output of the body ECU.
(1) Inspect the voltage between terminal 7 (GND1) and each terminal of the door which body ECU
is inoperative.
Standard:
Symbols (Terminal No.)ConditionSpecified Condition
PU (B10-21) @ GND1 (B12-7)Ignition switch ON,
master switch passenger side switch OFF " UP (manual operation)0 V "10 - 14 V
PD (B10-20) @GND1 (B12-7)Ignition switch ON,
master switch passenger side switch OFF " DOWN (manual operation)0 V "10 - 14 V
RRU (B11-9) @GND1 (B12-7)Ignition switch ON,
master switch rear RH side switch OFF " UP (manual operation)0 V "10 - 14 V
RRD (B11-8) @GND1 (B12-7)Ignition switch ON,
master switch rear RH side switch OFF " DOWN (manual operation)0 V "10 - 14 V
RLU (B11-14) @GND1 (B12-7)Ignition switch ON,
master switch rear LH side switch OFF " UP (manual operation)0 V "10 - 14 V
RLD (B11-13) @GND1 (B12-7)Ignition switch ON,
master switch rear LH side switch OFF " DOWN (manual operation)0 V "10 - 14 V
HINT:
When an output to the passenger door is normal, proceed to OK-A.
When outputs to both rear doors are normal, proceed to OK-B.
When an output to either of the passenger door and both rear doors are abnormal, proceed to NG.
OK-B Go to step 4
NG REPLACE MULTIPLEX NETWORK BODY ECU
OK-A
Page 1462 of 2572
B31305
B31305
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1933
2123 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK POWER WINDOW REGULATOR SWITCH ASSY (PASSENGER SIDE)
(a) Check the continuity.
(1) Check the continuity between each terminal of the
connectors.
Standard:
Switch OperationMeasuring ConditionSpecified Condition
Not operatedTerminal 4 @ Terminal 1Continuity
Not operatedTerminal 5 @ Terminal 1Continuity
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG REPLACE POWER WINDOW REGULATOR
SWITCH ASSY
4 CHECK POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR RH AND LH)
(a) Check the continuity.
(1) Check the continuity between each terminal of the
connectors.
Standard:
Switch OperationMeasuring ConditionSpecified Condition
Not operatedTerminal 4 @ Terminal 1Continuity
Not operatedTerminal 5 @ Terminal 1Continuity
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG REPLACE POWER WINDOW REGULATOR
SWITCH ASSY REAR
Page 1463 of 2572
05-1920
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2110 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WINDOWS CANNOT BE OPERATED VIA REGULATOR SWITCH AT
EACH SEAT
CIRCUIT DESCRIPTION
With the ignition switch ON and the window lock switch at NORMAL (except driver side), each regulator
switch drives each power window motor.
NOTICE:
The power window system has a function with a large-scale body multiplex communications. First
of all, inspect the communication function depending on the ºhow to proceed with troubleshootingº,
and check that there is no abnormality in the communication system. Then finally proceed with the
troubleshooting.
0523Q-04
Page 1464 of 2572
B78734
P10
Power Window Regulator Switch Assy
(Passenger Side)
P11
Power Window
Regulator Switch Assy Rear (Rear LH)+B
U
D
E 4
5V7
3
6
1 G
Passenger Side
J/B3
IN1 BR
7
4L10
4L W-B
W-B W-B
IN12
IC
GR
L-W
7
3
6
1 W-B W-B IA1BB1
R
P12
Power Window
Regulator Switch Assy Rear (Rear RH) BABB11
11
12
BC1 IO1 L
P L-W 10 1
7
3
6
1 R
G+B
U
D
E
+B
U
D
E BC112
W-B W-B
BB Instrument Panel J/B Assy
D FR DOOR
1D
1H12
1AP RR DOOR
D RR DOOR
1D3
8
1
To Battery
P7
Power Window
Regulator Motor Assy
Front RH
4 5
P8
Power Window Regulator
Motor Assy Rear LH
4 5
P9
Power Window Regulator
Motor Assy Rear RH
GR
4N 1
GR W-B
G
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1921
2111 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM