
L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCodePart Name Part Number
Note : Not all of the above part numbers of the connector are established for the supply.
2005 HIGHLANDER (EWD592U)
344
N 4Navigation ECU90980-1 1923
O 1Oil Pressure SW90980-1 1363
O 3Option Connector 190980-10908O 4Option Connector 290980-10908
O 5Overhead J/B90980-12183
O 6Occupant Classification ECU90980-12356
O 7Occupant Classification ECU90980-12357
O 8Occupant Classification Sensor Front LH90980-12353
O 9Occupant Classification Sensor Front RH90980-12354O10Occupant Classification Sensor Rear LH90980-12354
O11Occupant Classification Sensor Rear RH90980-12353
A/T Indicator SW
P 1Back-Up Light SW90980-12362
Park/Neutral Position SW
P 2Power Steering Oil Pressure SW90980-1 1428
P 3Parking Brake SW90980-10871
P 5Power Window Master SW with ECU90980-12166
P 6Power Window Motor Front LH
P 7Power Window Motor Front RH90980-10797P 8Power Window Motor Rear LH90980-10797
P 9Power Window Motor Rear RH
P10Power Window SW Front RH
P11Power Window SW Rear LH90980-10799
P12Power Window SW Rear RH
P13Pretensioner LH90980-12253P14Pretensioner RH90980-12253
P15Power Seat Control SW (Driver's Seat
Control)90980-10997
P16Power Seat Control SW (Driver's Seat
Lumbar Support Control)90980-10789
P18Power Seat Motor (Driver's Seat Lumbar
Support Control)
P20Power Seat Motor (Driver's Seat Reclining
Control)90980-10825
P21Power Seat Motor (Driver's Seat Slide
Control)
P22Pressure SW90980-10906
P23Power Outlet (110V)90980-10601
P24Power Seat Control SW (Front Passenger's
Seat Control)90980-10997
P25Power Seat Motor (Driver's Seat Front Tilt
Control)
P26Power Seat Motor (Driver's Seat Lifter
Control)
90980-10825
P27Power Seat Motor (Front Passenger's Seat
Reclining Control)90980-10825
P28Power Seat Motor (Front Passenger's Seat
Slide Control)
R 1Radiator Fan Motor90980-10928
R 2Radio and Player90980-10996
R 3Radio and Player90980-10997
R 4Radio and Player90980-12038
R 5Remote Control Mirror SW90980-1 1657
R 6Room Temp. Sensor90980-1 1918
R 7Rear Combination Light LH90980-10797R 8Rear Combination Light RH90980-10797
R 9Rear Door Speaker LH90980-10935R10Rear Door Speaker RH90980-10935
R11Rear Interior Light90980-10908
R12Rear Interior Light SW90980-10860
R13Rear Power Outlet90980-10760
R14Rear Side Marker Light LH90980-1 1159
R15Rear Side Marker Light RH90980-10534
R16Rear Window Defogger90980-1 1259R17Rear Window Defogger90980-11259
R18Rear Wiper Motor90980-10908
R19Remote Control Mirror LH90980-10798R20Remote Control Mirror RH90980-10798
R21Rear Washer Motor90980-1 1051
R22Radio and Player90980-12183
R23Radio and Player90980-12259
R24Rear Heater Main SW90980-10933
R25Rear Heater Blower Motor90980-10795
R26Rear Heater Blower SW90980-1 1527
R27Rear Heater Relay82660-53010
R28Rear Seat Entertainment Display90980-12153R29Rear Seat Entertainment ECU90980-12153
R30Rear Seat Entertainment ECU90980-12200
R31Rear Seat Entertainment ECU90980-12259
S 1Starter90980-1 1400
S 2Starter90980-09463
S 3Seat Heater SW LH90980-10957
S 4Seat Heater SW RH90980-10933
S 5Shift Lock ECU90980-1 1319
S14Steering Sensor82824-45030
S15Stop Light SW90980-1 1118
S16Side Airbag Sensor Front LH90980-12225S17Side Airbag Sensor Front RH90980-12225
S18Side Airbag Squib LH90980-1 1864S19Side Airbag Squib RH90980-1 1864
S20Sliding Roof Control ECU90980-10801
S22Stereo Power Amplifier90980-10807
S23Stereo Power Amplifier90980-10848
S25Seat Heater LH90980-10797S26Seat Heater RH90980-10797
S27Skid Control ECU with Actuator90980-12297

2005 HIGHLANDER (EWD592U)
43
G
Position of Parts in Instrument Panel
F 8 Front Power Outlet
G 4 Glove Box Light
G 5 Gateway ECU
H 9 Heater Relay
H 10 Heated Oxygen Sensor (Bank 1 Sensor 2)
I 14 Ignition Key Cylinder Illumination
I 15 Ignition SW
J 5 Junction Connector
J 6 Junction Connector
J 7 Junction Connector
J 16 Junction Connector
J 17 Junction Connector
J 20 Junction Connector
K 4 Key Interlock Solenoid
Unlock Warning SW
M 2 Main SW
M 3 Multi-Display
M 4 Multi-Display
M 5 Multi-Display
N 3 Navigation ECU
N 4 Navigation ECU
O 3 Option Connector 1
O 4 Option Connector 2P 3 Parking Brake SW
P 22 Pressure SW
R 2 Radio and Player
R 3 Radio and Player
R 4 Radio and Player
R 5 Remote Control Mirror SW
R 6 Room Temp. Sensor
R 22 Radio and Player
R 23 Radio and Player
R 24 Rear Heater Main SW
S 3 Seat Heater SW LH
S 4 Seat Heater SW RH
S 5 Shift Lock ECU
S 14 Steering Sensor
S 15 Stop Light SW
S 28 Short Connector
S 29 Short Connector
S 30 Short Connector
S 31 Short Connector
T 4 Theft Deterrent ECU
T 5 Theft Deterrent Indicator Light
T 6 TRAC Off SW
T 7 Transponder Key Amplifier
T 8 Turn Signal Flasher
T 14 Transponder Key Computer
T 15 Telltale Light Assembly
T 16 Indicator Light Wire Sub Assembly
Transmission Control SW
Transmission Shift Main SW
V 8 VSC Warning Buzzer

2005 HIGHLANDER (EWD592U)
45
G
Position of Parts in Body
R 7 Rear Combination Light LH
R 8 Rear Combination Light RH
R 9 Rear Door Speaker LH
R 10 Rear Door Speaker RH
R 11 Rear Interior Light
R 12 Rear Interior Light SW
R 13 Rear Power Outlet
R 14 Rear Side Marker Light LH
R 15 Rear Side Marker Light RH
R 16 Rear Window Defogger
R 17 Rear Window Defogger
R 18 Rear Wiper Motor
R 19 Remote Control Mirror LH
R 20 Remote Control Mirror RH
R 25 Rear Heater Blower Motor
R 26 Rear Heater Blower SW
R 27 Rear Heater Relay
R 28 Rear Seat Entertainment Display
R 29 Rear Seat Entertainment ECU
R 30 Rear Seat Entertainment ECU
R 31 Rear Seat Entertainment ECUS 16 Side Airbag Sensor Front LH
S 17 Side Airbag Sensor Front RH
S 20 Sliding Roof Control ECU
S 22 Stereo Power Amplifier
S 23 Stereo Power Amplifier
S 32 Side Airbag Sensor Rear LH
S 33 Side Airbag Sensor Rear RH
T 9 Towing Converter
T 10 Trailer Hitch
T 11 Tweeter LH
T 12 Tweeter RH
V 9 Garage Door Opener
Vanity Light LH
V 10 Vanity Light RH
V 11 Vapor Pressure Sensor
V 13 Video Terminal
V 14 VSV (Canister Closed Valve)
V 15 Voltage Inverter
W 6 Wireless Door Lock ECU
Y 1 Yaw Rate Sensor

2005 HIGHLANDER (EWD592U)
327
J
FuseSystemPage
7.5AIG1
Headlight (w/ Daytime Running Light)
Headlight (w/o Daytime Running Light)
Interior Light
Key Reminder and Seat Belt Warning
Light Auto Turn Off System
Mirror Heater and Front Deicer
Moon Roof
Navigation System
Power Outlet
Power Window
Seat Heater
SRS
Theft Deterrent System
Trailer Towing
Turn Signal and Hazard Warning Light
Wireless Door Lock Control11 8
122
136
226
148
254
216
266
246
188
256
155
208
152
130
200
7.5AOBDEngine Control (2AZ-FE)
Engine Control (3MZ-FE)88
74
7.5APANELIllumination142
7.5ARAD NO.2
Air Conditioning (Automatic A/C)
Air Conditioning (Manual A/C)
Audio System (6 Speaker)
Audio System (8 Speaker)
Automatic Light Control
Door Lock Control
Headlight (w/ Daytime Running Light)
Headlight (w/o Daytime Running Light)
Interior Light
Key Reminder and Seat Belt Warning
Navigation System
Power Window
Remote Control Mirror
Shift Lock
Theft Deterrent System
Wireless Door Lock Control298
304
280
272
146
194
11 8
122
136
226
266
188
240
232
208
200
10AECU-IG
Charging
Navigation System
Shift Lock
Theft Deterrent System
VSC and Tire Pressure Warning System70
266
232
208
180
10AHEATER
Air Conditioning (Automatic A/C)
Air Conditioning (Manual A/C)
Charging
Combination Meter298
304
70
282
*These are the page numbers of the first page on which the related system is shown.

2005 HIGHLANDER (EWD592U)
60
H SYSTEM CIRCUITS
2005 HIGHLANDER
ELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITS
Page
Air Conditioning (Automatic A/C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
298
Air Conditioning (Manual A/C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Audio System (6 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Audio System (8 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Automatic Glare-Resistant EC Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Automatic Light Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Back-Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Cruise Control (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Cruise Control (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Electronically Controlled Transmission and A/T Indicator (2AZ-FE) . . . . . . 110
Electronically Controlled Transmission and A/T Indicator (3MZ-FE) . . . . . . 102
Engine Control (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Engine Control (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Engine Immobilizer System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Front Deicer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Headlight (w/ Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Headlight (w/o Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Mirror Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Multiplex Communication System (BEAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . . 258
Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Navigation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Power Seat (Driver's Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Power Seat (Front Passenger's Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Radiator Fan and Condenser Fan (2AZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Radiator Fan and Condenser Fan (3MZ-FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Rear Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226