Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf ewdtmc2 ewdtmpdf ewdsourc 2002 024runne systemci 020hldrl
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84
W
10A HEAD (LO LH)
BATTERY
2
G- W 1
2
H1
HEADLIGHT LH
1
3
W- G 10A HEAD (HI LH)
2
2
1
R- L
2
W- G
10A HEAD (LO RH)
H2
2
1
HEADLIGHT RH L
W- G
2
1
D9
3
W- G W- G W- G
I4
DAYTIME RUNNING
I10
2 IG3
2
LIGHT RELAY
NO. 4 10A HEAD (HI RH)
W
1
2
W- B W- G
2
1
7. 5A DRL R- W
2
3
4
2
1
Y Y
2
2
3 IG3
2
1
2
R- G
R- B
D12
2002 4RUNNER (EWD471U)
HEADLIGHT (w/ DAYTIME RUNNING LIGHT)
DIODE
2
G
(DAYTIME RUNNING
C13
LIGHT NO. 1)
1
DIMMER LIGHT
2
G G
2
2
SW CONTROL SW
I9
3
4
COMBINATION SW
2
G
OFF
TAIL
LOW
HIGH
HEAD
FLASH
J4
HEAD RELAY
R
13
R- B
G
W- G
JUNCTION
CONNECTOR
A
16
W- B
IE
2
1
A
4
2
8
3
G
2
7
V
2
Y- B
2
V
R
G
G
DIMMER RELAY
R- Y
W- B
W- B
W- G
FROM POWER SOURCE SYSTEM (SEE PAGE 48)
1
15A 10A
DOME GAUGE
R
2
2 5 1F
L- Y
R
5 1K 6 1E
B- Y
6 1C 3 1F
L- Y
R
Y- B
CONNECTOR
D 8 3C 9 3D
JUNCTION
4 IG3
G
J3
D
5 3C 8 3D
V
Y- B
B- Y
L- Y
G
R
V
8 7 4 6 3 12
D8
G DAYTIME RUNNING LIGHT RELAY
(MAIN)
5 1 2 9 11
W- G
W- B
Y- G
L- B
G
W- B
I11
5 E 12 A
16 IG1
HIGH BEAM
C25 A , C27 E
W- B
COMBINATION METER
R- W
Y- G
20 3E
1 E 17 E
R- Y
W- B
16 3E 2 EA1
W- B
Y- G
W- B
PARKING BRAKE SW
1 1
GENERATOR
W- G L
A
W- B J9
G1
P2
JUNCTION
CONNECTOR
IF
2002 4RUNNER (EWD471U)
85
HEADLIGHT (w/ DAYTIME RUNNING LIGHT)
SYSTEM OUTLINE
1. DAYTIME RUNNING LIGHT OPERATION
When the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 9 of the daytime
running light relay (Main).
If the parking brake lever is pulled up (Parking brake SW on) at this time, the relay is not activated so the daytime running
light system does not operate. If the parking brake lever is then released (Parking brake SW off), a signal is input to
TERMINAL 11 of the relay. This activates the relay, so current flows from battery to the HEAD relay (Point side) to
TERMINAL 4 of the DIMMER relay to TERMINAL 1 to HEAD (LO LH), (LO RH) fuse to TERMINAL 1 of the headlights to
TERMINAL 3 to TERMINAL 1 of the daytime running light relay (Main) to TERMINAL 2 to GROUND. This causes the
headlights to light up (The headlights light up dimmer than full brightness.).
Once the daytime running light system operates and headlights light up, headlights remain on even if the parking brake lever
is pulled up (Parking brake SW on).
If the engine stalls and the ignition SW remains on, headlights remain lighted up even though current is no longer output
from TERMINAL L of the generator. If the ignition SW is then turned off, the headlights go off. If the engine is started with the
parking brake lever released (Parking brake SW off), the daytime running light system operates and the headlights light up
when the engine starts.
2. HEADLIGHT OPERATION
When the light control SW is switched to HEAD position, current flows from the DRL fuse to TERMINAL 4 of the daytime
running light relay no. 4 to TERMINAL 3 to TERMINAL 1 of the diode (Daytime running light no. 1) to TERMINAL 2 to
TERMINAL (E) 5 of the combination meter to TERMINAL (E) 1 to TERMINAL 13 of the light control SW to TERMINAL 16 to
GROUND, activating the daytime running light relay no. 4. Current then flows from the HEAD (LO LH), (LO RH) fuse to
TERMINAL 1 of the headlights to TERMINAL 3 to TERMINAL 2 of the daytime running light relay no. 4 to TERMINAL 1 to
GROUND, causing the headlights to light up at normal intensity.
When the dimmer SW is switched to the HIGH position, the signal from the dimmer SW is input to the daytime running light
relay (Main). This activates the relay and current flows from TERMINAL 4 of the DIMMER relay to TERMINAL 2 to
TERMINAL 4 of the daytime running light relay (Main), activating the DIMMER relay.
This causes current to flow from TERMINAL 4 of the DIMMER relay to TERMINAL 3 to HEAD (HI LH), (HI RH) fuse to
TERMINAL 2 of the headlights to TERMINAL 3 to TERMINAL 2 of the daytime running light relay no. 4 to TERMINAL 1 to
GROUND, causing the headlights to light up at high beam.
When the dimmer SW is switched to FLASH position, the daytime running light relay (Main) is activated and current flows
from TERMINAL 4 of the DIMMER relay to TERMINAL 3. Current from the DRL fuse flows to TERMINAL 4 of the daytime
running light relay no. 4 to TERMINAL 3 to TERMINAL 1 of the diode (Daytime running light no. 1) to TERMINAL 2 to
TERMINAL 8 of the dimmer SW to TERMINAL 16 to GROUND, and also flows from the HEAD (HI LH), (HI RH) fuse to
TERMINAL 2 of the headlights to TERMINAL 3 to TERMINAL 2 of the daytime running light relay no. 4 to TERMINAL 1 to
GROUND, causing the high beam to operate.
SERVICE HINTS
HEAD RELAY
2-1 : Closed with light control SW at HEAD position or dimmer SW at FLASH position
Closed with engine running and parking brake lever released
DIMMER RELAY
Changes from HEAD(LO) to HEAD(HI) with dimmer SW at FLASH position or with HEAD relay on and dimmer SW at HIGH
position
: PARTS LOCATION
Code See Page Code See Page Code See Page
C13 30 D12 30 J4 31
C25 A 30 G1 28 J9 31
C27 E 30 H1 28 P2 31
D8 30 H2 28
D9 30 J3 31
: RELAY BLOCKS
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
2002 4RUNNER (EWD471U)
86
,,, : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
,,,
,,,
Code See Page Junction Block and Wire Harness (Connector Location)
1C 24 Cowl Wire and Driver Side J/B (Lower Finish Panel)
1E 24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 24 Cowl Wire and Driver Side J/B (Lower Finish Panel)
1K 24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
3C
3D 26 Cowl Wire and Center J/B (Near the Steering Column Tube)
( g )
3E
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 36 Engine No.2 Wire and Engine Room Main Wire (Near the Engine Room R/B)
IG1
38 Engine Room Main Wire and Cowl Wire (Left Kick Panel)
IG3
: GROUND POINTS
Code See Page Ground Points Location
IE 38 Cowl Side Panel LH
IF 38 Cowl Side Panel RH
: SPLICE POINTS
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 40 Engine Room Main Wire I10
40 Cowl Wire
I9 40 Cowl Wire I11
2002 4RUNNER (EWD471U)
87
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