2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 457 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
142
Illumination
23 15
7. 5A PANEL
1J 4 1A 1
A 7
B 18
OFF
Tail
Head
Light
Control SW
IA3A 12 3A11
2 1
3A 7
L G
13J
21 15
3D 7
V Y
83G
1 2
3G 1
R W
TAI LL IGHT
Relay
SB B
TRL

Page 458 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
143
13H
3H 4
W G
RL
63D5
63D 4 93K
2 1
3F 2
L B
122
2 1
3H 10
3F 13 3E103I 8 3H 2
3G 2
IB
G
(
*1)
G
(
*2) W
(
*1)
W
(
*2)B W- B W- B
G 4
B 10
A 5
E 4 S 3
R 4
83K
2 1
3K 1
L B

Page 459 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
144
Illumination
IB 5V
R
3B 12
3K 2 11 IL2 IK3 12
V
VR
32A 10A
DOME
11 4D64H
LG V
33D 93F
BRW- B
C11
Rheostat
B
W- BB712
11 22From Power Source System (
See Page 62)
Combinat

Page 460 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
145
TAILLIGHT Relay
5-3 : Closed with the light control SW at TAIL or HEAD position
C13 Combination SW
14-16 : Closed with the light control SW at TAIL or HEAD position
: PA

Page 461 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
146
Automatic Light Control
40A
MAIN
12
C13
Di mmer SWLight
Control SWFlashHighLow HeadTail OFF13 814
16 Auto
IAB 16 B 17 B 18 B 15 3
IK3 4
C 37. 5A
RAD
NO. 2
1J 6
A 21 A 20

Page 462 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
147
Automatic light control is designed for turning taillights and headlights on/off automatically according to the surroundings
brightness when the light control SW is on AU

2005 HIGHLANDER (EWD592U)
147
Automatic light control is designed for turning taillights and headlights on/off automatically according to the surroundings
brightness when the light control SW is on AUTO position under the condition that the ignition SW is on.
Automatic Light Control Operation
When the surrounding darkens (Darker than the value set for taillight lightning), taillight is automatically turned on under the
condition that the ignition SW is on with the light control SW being on AUTO position. When further darkens (Darker than the
value set for headlight lightning), the headlight is automatically turned on.
In addition, if the brightness reaches the value set for turning the each light off, each light is turned off.
C13 Combination SW
14-16 : Closed with the light control SW at TAIL or HEAD position
13-16 : Closed with the light control SW at HEAD position
12-16 : Closed with the light control SW at AUTO position
D7 Door Courtesy SW Front LH
1-Ground : Closed with the door open
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A2342B11C42D744
B9A42B12D42F738 (3MZ-FE)
B10B42C1342
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
323Engine Room R/B No.3 (Engine Compartment Rear Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A29Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1H29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1J28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2G27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2I
gg(g)
3A
3B30Instrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3C
()
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA152Cowl Wire and Floor No.2 Wire (Left Kick Panel)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IA52Left Cowl Side Panel
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E1048 (3MZ-FE)Engine Room Main Wire
System Outline
Service Hints

Page 463 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
148
Light Auto Turn Off System
7. 5A
ECU- B
2A 47. 5A
IG1
1K 10
140A ALT
2
1
F 7 W
1A 115 231J 4
3
TAILLIGHT
Relay 40A MAIN
2I 12G 4
2
13 13 253
DRL NO. 2
Relay
3
B WR-BR-B
4

Page 464 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 2005 HIGHLANDER (EWD592U)
149
With the ignition SW turned on, the current flows to TERMINAL (A) 5 of the body ECU through IG1 fuse.
Voltage is applied at all times to TERMINAL (A) 7 of the body ECU th

2005 HIGHLANDER (EWD592U)
149
With the ignition SW turned on, the current flows to TERMINAL (A) 5 of the body ECU through IG1 fuse.
Voltage is applied at all times to TERMINAL (A) 7 of the body ECU through the TAILLIGHT relay. Coil side, and to
TERMINAL (C) 3 through the HEAD LAMP relay coil side (w/o daytime running light) or through the DRL NO.2 relay (w/
daytime running light).
1. Normal Lighting Operation

With the light control SW turned to TAIL position, a signal is input into TERMINAL (B) 18 of the body ECU. Due to this signal,
the current flowing to TERMINAL (A) 7 of the body ECU flows to TERMINAL (B) 18 to TERMINAL 14 of the light control SW
to TERMINAL 16 to GROUND, and TAILLIGHT relay causes taillights to turn on.

With the light control SW turned to HEAD position, a signal is input into TERMINALS (B) 17 and (B) 18 of the body ECU. Due
to this signal, the current flowing to TERMINAL (C) 3 of the body ECU flows to TERMINAL (B) 17 to TERMINAL 13 of the
light control SW to TERMINAL 16 to GROUND in the headlight circuit, and causes TAILLIGHT and HEAD LAMP (w/o
daytime running light) or DRL NO.2 relay (w/ daytime running light) to turn the lights on. The taillight circuit is same as above.
2. Light Auto Turn Off Operation
With light on and ignition SW turned off (Input signal goes to TERMINAL (A) 5 of the body ECU), when the driver's door is
opened (Input signal goes to TERMINAL (C) 11 of the body ECU), the ECU operates and the current is cut off which flows
from TERMINAL (A) 7 of the body ECU to TERMINAL (B) 18 in taillight circuit and from TERMINAL (C) 3 to TERMINAL (B)
17 in headlight circuit.
As a result, all lights are turned off automatically.
B9 (A), B10 (B), B12 (D) Body ECU
(D) 9-Ground : Always approx. 12 volts
(A) 5-Ground : Approx. 12 volts with the ignition SW at ON position
(B)17-Ground : Continuity with the light control SW at HEAD position
K4 Unlock Warning SW
2-1 : Closed with the ignition key in the cylinder
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B9A42C1342J643
B10B42D744K443
B11C42F738 (3MZ-FE)
B12D42F740 (2AZ-FE)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
323Engine Room R/B No.3 (Engine Compartment Rear Left)
System Outline
Service Hints

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