84

COROLLA (EM00H0U)

Headlight

RW

12

IG2

3B8

3B10

3B16R

W

10A

GAUG

E

8

II22

L1

3B22

3B12

OFF Low

Head

High

Dim

mer

SW

Tail

FlashLigh

tCo

ntro

l SW

3C6

3C4

Y R

5 3C

ED

A

IE

AA

IA43

C12

WB

15 7 2

13 12 8

IE11 IE13 IE12

20 19 18

A18

1 4 3

GY

GB

GW

GY

GO

GR

WB

GW

Y R

Y

WB

WB

WB

10 11

RW

B

D 2

G 1

WB

RW

J 6

RW

3

RB

RB

10A

ECU

B

IH1

( 1)

( 1)

( 1)

( 1)

( 1)

( 1)

CSB CSO CSE

E

RW

RW

16

( 1)

(1)

9

( 1)

1

15A

DOM

E

LW

LW

2

CLTB CLTS CLTE

Automatic LightControl Sensor

Combination SW

Daytime Running Light Relay

Gene

rato

r

JunctionConnector

T H HI

IG+B

CHG

114B 4B

21

(BAT)(IG)(BAT)

COROLLA (EM00H0U)

85

40AHEADMAIN

1

RW

1

11

RB

RB

P 3

2 5

1 3

1 1

1 1

WB(3)

5

R

HIND1

10AHEAD LHLWR

1

2

1

10AHEAD RHLWR

6

1

2

1

IA41

1101314

IA515 IA515

B

B

PKB

2

1

B 2

J 1

Skid

Cont

rol E

CUw

ith A

ctua

tor

GB(1)

WB(3)

WB

GB

WR

RW

RW

RB

RY

RW

RW

RW

WR

WB

RY

RY

RB

RW R

RB

RB

RB

RW

D 2

RB

RB

R

R

HEADRelay

RB

DRL

3 : Except 2 2 : w/ VSC, w/ ABS 1 : USA

( 2)

( 2)

( 3)

( 3)

( 1)

LW LW

2

S 1( A

) , (B)

Brak

e Fl

uid L

evel

War

ning

SW

Daytime Running Light Relay

Junc

tion

Conn

ecto

r

ParkingBrake SW

4

GO

FOG

Com

binat

ion S

W

BRK

PKB

TAIL DIM HLP

( 4)

4 : w/ Fog Light

IA24

R

5 : w/ VSC 6 : w/o VSC

( 3)

(BAT)

(6)B23(5)A28

1

2

1

2

Head

light

LH( Lo

w)

H 2

Head

light

RH( Lo

w)

H 4

86

COROLLA (EM00H0U)

Headlight

( 1)

( 1)

WB

GB(1)

WR

WB(3)

RRW

WB

WB

WR

WB

WB

WB

R

RW R

RB

LW

LW

GRW

LWR

GBGW

RR

GW

R

RB GW7 IC

4 IL

20 4C

19 4C

RB

LW

RW

7 IH

15ATAIL

33

33

13

25

EAED

6 IA6 IA210

11

11

13

25

1

2

1

10AHEAD RHUPR

1

2

1

10AHEAD LHUPR

1

( 1)

(1)

( 1)

WB

1 : USA

TAIL

Re

lay

DIM

MER

Rela

y

R

Com

binat

ion M

eter

C 9( A

) , C16

( B)

High

Bea

m

HEAD

( USA

)

A4

R

A5 A18A14

A13 B7

2 : w/ VSC, w/ ABS 3 : Except 2

(BAT)

1

2

1

2

Head

light

LH

( High

)H

1

Head

light

RH

( High

)H

3

COROLLA (EM00H0U)

87

The current is always flowing from the HEAD MAIN fuse to HEAD relay (Coil side) to TERMINAL 6 of the daytime runninglight relay, from ECUB fuse to TERMINAL 3 of the daytime running light relay and from the TAIL fuse to TAIL relay (Coilside) to TERMINAL 14 of the daytime running light relay (USA).When the ignition SW is turned on, the current flowing through the GAUGE fuse flows to TERMINAL 12 of the daytimerunning light relay.

1. Daytime Running Light OperationWhen the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 8 of the daytimerunning light relay. If the parking brake lever is pulled up (Parking brake SW on) at this time, the relay is not activated so thedaytime running light system does not operate. If the parking brake lever is then released (Parking brake SW off), a signal isinput to TERMINAL 11 of the relay.This activates the daytime running light relay and the HEAD relay is turned to on, so the current flows from the HEAD MAINfuse to the HEAD relay (Point side) to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the headlights to TERMINAL1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing the headlights to light up(Headlights light up dimmer than normal brightness.). Once the daytime running light system operates and the headlightslight up, the 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, the headlights remain light up even through current is no longer outputfrom 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 systemoperates and headlights light up when the engine starts.

2. Headlight OperationWhen the light control SW is switched to HEAD position and the dimmer SW is set to LOW position, causing the daytimerunning light relay and the HEAD relay to turn on, so the current flows from the HEAD MAIN fuse to HEAD relay (Coil side) toTERMINAL 6 of the daytime running light relay to TERMINAL 7 to TERMINAL 12 of the light control SW to TERMINAL 11 toGROUND. The current to HEAD relay (Point side) then flows to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of theheadlights (Low) to TERMINAL 1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causingthe headlights to light up at normal intensity and HEAD indicator light to light up.When the light control SW is switched to HEAD position and the dimmer SW is set to HIGH position, the signal from thedimmer SW is input to the daytime running light relay. This activates the daytime running light relay and the HEAD relay isturned on, so the current flows from the HEAD MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay toTERMINAL 2 to TERMINAL 13 of the daytime running light relay, activating the DIMMER relay. This causes current to flowfrom TERMINAL 3 of the DIMMER relay to TERMINAL 5 to HEAD LH UPR, HEAD RHUPR fuses to TERMINAL 2 of theheadlights (High) to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high beam indicatorlight to light up and HEAD indicator light to light up.When the dimmer SW is switched to FLASH position, the signal from the dimmer SW is input to the daytime running lightrelay. This activates the daytime running light relay and the HEAD relay is turned on, so the current flows from the HEADMAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to TERMINAL 2 to TERMINAL 13 of the daytimerunning light relay, activating the DIMMER relay, and also flows from the HEAD LH UPR, HEAD RH UPR fuses toTERMINAL 2 of the headlights to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the highbeam indicator light to light up.

3. Automatic Light Control Operation (USA)When the daytime running light is operating and the automatic control sensor detects a decrease in the ambient light, theautomatic light control operation starts. At the same time, daytime running light relay is activated, so current flows from theTAIL fuse to the TAIL relay (Coil side) to TERMINAL 14 of the daytime running light relay, and the HEAD MAIN fuse to theHEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay, activating both the TAIL relay and the HEAD relay,so that the taillights and headlights light up.When the automatic light control sensor detects an increase in the ambient light, the ignition SW is turned to off, the lightcontrol SW is turned to HEAD position, and the automatic light control operation stops.

System Outline

88

COROLLA (EM00H0U)

Headlight : Parts Location

Code See Page Code See Page Code See PageA18 36

H132 (1ZZFE) J1 35 (2ZZGE)

B232 (1ZZFE) H1 34 (2ZZGE) J6 37

B234 (2ZZGE)

H232 (1ZZFE) P3 37

C9 A 36H2

34 (2ZZGE)S1

A33 (1ZZFE)

C12 36H3

32 (1ZZFE) S1A

35 (2ZZGE)C16 B 36

H334 (2ZZGE) S1

B33 (1ZZFE)

D2 36H4

32 (1ZZFE) B 35 (2ZZGE)G1 32 (1ZZFE)

H434 (2ZZGE)G1

34 (2ZZGE) J1 33 (1ZZFE)

: Relay Blocks

Code See Page Relay Blocks (Relay Block Location)1 22 Engine Room R/B (Engine Compartment Left)3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)IG

25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)IH 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)

4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire HarnessCode See Page Joining Wire Harness and Wire Harness (Connector Location)IA2

44 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)IA4 44 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)IA5

44 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

IA6IE1 45 Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter)II2 45 Engine Wire and Instrument Panel Wire (Blower Unit RH)

: Ground Points

Code See Page Ground Points Location

EA42 (1ZZFE)

Front Right FenderEA43 (2ZZGE) Front Right Fender

ED42 (1ZZFE)

Front Left Suspension TowerED43 (2ZZGE) Front Left Suspension Tower

IE 44 Behind the Combination Meter

COROLLA (EM00H0U)

89

Memo