Page 433 of 2572
2005 HIGHLANDER (EWD592U)
11 8
Headlight with Daytime Running Light
40A MAIN
2
1 4
2 32B 1
2F 22F57. 5A
DRL
3 2 13
1 2
23 15
4 33
33
E11 E12
H 1
R- B
P
L- W
P
R R- W
W- B
R- LL- WHEAD LAMP
Relay
10A H- LP
RH UPR 10A H- LP
LH UPR
DRL NO. 3
Relay
52 1333
33
E11 2 1
W- B W- BR- L
L- W H 3
DRL NO. 4
Relay
R- W
3
W- B
W- B
EB
W- B
B
L- Y
R- WB
W- B 2G 4
R- B
1
E10
R- W
Fr om Power Source System (
See Page 62)
Headlight LH
(
High Beam)
Headlight RH
(
High Beam)
Page 434 of 2572
2005 HIGHLANDER (EWD592U)
11 9
IF3 7
9IF3
B G BR
1 1
222
1 2
R- Y
B
2 2
15A H- LP
LH LWR
R- B
P
B 16
A 19IC3 7
1 2
EG A
H 2R- W W- B
EA AE10
B
H 4 J 1
W- B
J 3
B
L- R
52 3133
33 E10
IA
W- B
16 7813
OFF
Tail
Head
Low
High
Flash
Light
Control SW Dimmer SW
13 4A64F 4N2 B 14HU
B 15HF
B 17HEAD C 3
HRLYC 2
DRL
Y
O
LGR
BR- B
R- B
C13DRL NO. 2
Relay
D 14
R
P 3
PKB
4H 3
4M 9
B
IK3 4
P
IK3 16
WR- B
B
1
15A H- LP
RH LWR
7. 5A IG1
1K 10 1J62A4
7. 5A
RAD NO. 2
7. 5A ECU- B BR
53B 10 3A
GR
IG 5A
B
63C 83A
W
ACC 17 A
G
61H 10 1G
BR
BECU 9D 5IC3
W- L W- B
13 3F33BGN D2
W- B
2A
IBGND1
W- B
7D
4H 11
4N 14L7
IC
W- B
W- B
E 4
R- Y
R- Y
12 4H
LG
Y
Y
16
M 3
PKBIF3 4 From Power Sour ce System (
See Page 62)
B 9(
A)
, B10(
B)
,
B11(
C)
, B12(
D)
C11(
A)
, C12(
B)
Beam
Body ECU
Combination Meter
Combination SW
Headlight LH
(
Low Beam)
Headlight RH
(
Low Beam) Junction
Connector
Junction
Connector
Multi- Display Par king
Brake SW
Page 435 of 2572

2005 HIGHLANDER (EWD592U)
120
Headlight with Daytime Running Light
1. Daytime Running Light Operation
The headlight is turned on when all the following conditions are satisfied
*When the ignition switch is ON position
*When the generator is generating electricity
*When the light control SW is OFF position
*When the parking brake SW is OFF position
2. Headlight Operation
*The headlight comes on at the LOW position when the dimmer SW is turned to the low beam position with the light control
SW being HEAD position.
*If the dimmer SW is turned to the HIGH position with the light control SW being HEAD position, the headlight comes on at
the high beam position. Moreover, the high beam indicator light appears on the combination meter.
*Regardless of the light control SW positions, the headlight comes on at the low beam position when the dimmer SW is
turned to FLASH position. Moreover, the high beam indicator light appears on the combination meter.
B9 (A), B10 (B), B12 (D) Body ECU
(D) 7-Ground : Always continuity
(D)14-Ground : Continuity with parking brake pedal depressed
(B)17-Ground : Continuity with the light control SW at HEAD position
(A) 2-Ground : Always continuity
(A) 5-Ground : Approx. 12 volts with the ignition SW at ON position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B9A42H138 (3MZ-FE)H440 (2AZ-FE)
B10B42H140 (2AZ-FE)J139 (3MZ-FE)
B11C42H238 (3MZ-FE)J141 (2AZ-FE)
B12D42H240 (2AZ-FE)J339 (3MZ-FE)
C11A42H338 (3MZ-FE)J341 (2AZ-FE)
C12B42H340 (2AZ-FE)M343
C1342H438 (3MZ-FE)P343
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
323Engine Room R/B No.3 (Engine Compartment Rear Left)
System Outline
Service Hints
Page 436 of 2572