Toyota Corolla 2004 Electrical Wiring Diagram - Light Reminder and Key Reminder

Light Reminder and Key Reminder

(

)(IG)

BAT

10A
GAUGE

IG

2IH7

R–W

3B22

3B16

R–W

45 18

15A
DOME

2

1

L–WL–WL–W

IC7

IL4

4C20

4C19

BAT

G–W

)(

15A
TAIL

)
∗3

(

G–W

)
∗4

(

G

OFF

Tail

Light

Control SW

Head

C12

Combination SW

C 9

Combination Meter

∗ 1 : w/ Door Lock Control
∗ 2 : w/o Door Lock Control
∗ 3 : USA
∗ 4 : Canada

G–W

(∗3)

G–W

(∗3)

13

10

G

15

T

D 2

Daytime Running

TAIL

14

)
∗4

(

W–B

(∗3)

Light Relay

G–B

(∗3)

G

(∗3)

G–W

(∗3)

3

3

13

TAIL
Relay

25

3

3

Buzzer

17 216

R–WR–W

IL3

ID1

1

D 4

Door Courtesy SW
Front LH

2

1

W–B L–B

A

L–B
(∗1)

)
∗2

(

L–B
(∗1)

U 1

Unlock
Warning SW

)
∗3

4A14

4A15

W–BW–B

4B18

4B21

A

IE

J 6

Junction
Connector

W–B

4B11

(

190

COROLLA (EM00H0U)

D4

:

:

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

Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
30

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

30

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

:

System Outline

The current is applied at all times to TERMINAL 5 of the combination meter through the DOME fuse.
When the ignition SW is turned to ON position, the current flows to TERMINAL 4 of the combination meter through the
GAUGE fuse. When the light control SW is turned to TAIL or HEAD position, current is applied to TERMINAL 18 of the
combination meter through the TAIL fuse via the TAIL relay (USA) or the light control SW (Canada).

1. Light Reminder System

When the light control SW is in TAIL or HEAD position, the ignition SW turned to OFF from ON position, and the driver’s door
opened (Door courtesy SW on), the current flows to TERMINAL 4 of the combination meter stops. As a result, the
combination meter is activated and current flows from TERMINAL 5 of the combination meter to TERMINAL 2 to GROUND,
the buzzer in the combination meter goes on to remind the light is lighting up.

2. Key Reminder System

When the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SW
on), a signal is input from the unlock warning SW to TERMINAL 16 of the combination meter, and from the door courtesy SW
front LH to TERMINAL 17 of the combination meter. As a result, the buzzer in the combination meter goes on and warns the
driver that the key is remaining in the key cylinder.

: Parts Location

Code See Page Code See Page Code See Page

C9 36

C12 36

D2 36 J6 37

38 (*1) U1 37
40 (*2)

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

IL 24
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A
4B
4C

Ground Points

Code See Page Ground Points Location

IE 44 Behind the Combination Meter

* 1 : w/ Side Airbag and/or Stereo Component Amplifier * 2 : w/o Side Airbag and Stereo Component Amplifier

COROLLA (EM00H0U)

191