light and key reminder buzzer.pdf

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Light Reminder Buzzer and Key Reminder Buzzer
From Power Source System (See Page 48)
* 1 : w/ Door Lock Control
* 2 : w/o Door Lock Control
* 3 : USA
* 4 : Canada
1
10A
GAUGE
15A
DOME
15A
TAIL
G–W
(*3)
G–W
(*3)
2
2
IG
1
7
IH
G–W
(*3)
3
3
13
15
1
3
OFF
T
TAIL
Relay
22
3B
7
IC
Tail
Head
TAIL
2
5
14
16
3B
4
IL
C12
10
3
3
Combination SW
G–B
(*3)
20
4C
I 4
G
( *3 )
19
4C
C 9
4
5
18
Combination Meter
Buzzer
17
2
16
L–B
( *1 )
14
4A
3
IL
15
4A
18
4B
L–B
( *1 )
1
ID
2
U 1
21
4B
Unlock
Warning SW
1
1
D 4
Door Courtesy SW
Front LH
A
A
J 6
Junction
Connector
IE
168
2004 COROLLA (EWD533U)
252469174.002.png 252469174.003.png
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.
Service Hints
C9 Combination Meter
4–Ground : Approx. 12 volts with the ignition SW at ON position
18–Ground : Approx. 12 volts with the light control SW at Tail or Head position
17–Ground : Continuity with the driver’s door open
2–Ground : Always continuity
D4 Door Courtesy SW Front LH
1–Ground : Closed with the driver’s door open
U1 Unlock Warning SW
2–1 : Closed with the ignition key in cylinder
: Parts Location
Code
See Page
Code
See Page
Code
See Page
C9
34
D2
34
J6
35
C12
34
D4
36
U1
35
: 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
25
IH
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
(
)
IL
24
3B
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A
4B
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
(
)
4C
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
169
2004 COROLLA (EWD533U)
25
252469174.004.png
Light Reminder Buzzer and Key Reminder Buzzer
: Splice Points
Code
See Page
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
I4
42
Instrument Panel Wire
170
2004 COROLLA (EWD533U)
252469174.005.png
Memo
171
2004 COROLLA (EWD533U)
252469174.001.png

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