Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 22 systemci 017alc
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AUTOMATIC LIGHT CONTROL
FROM POWER SOURCE SYSTEM (SEE PAGE 52)
W- R
I4
W- R
W- R
10A 10A
GAUGE DOME
4 1B 2 1B
5 1 12 2J
R- W
TAILLIGHT
8 2K RELAY
3 1W
3 2
2 3
HEAD RELAY
O
6 1C
10 1V
R
G- R
1 4
A
J18
JUNCTION
LIGHT RELAY (MAIN)
2 6 B CONNECTOR
DAYTIME RUNNING
J5
H- LP JUNCTION A
CONNECTOR
R
40A
MAIN B
H
G- R
7 2 1M
D4
1
3 2B 9 A 7 1
TRLY IG B
W- R
I13 A
1 B INTEGRATION RELAY
100A INP
HRLY H T AUTO DCTY E CSE CSO CSB
R- L
11 A 12 A 10 A 8 A 6 10 21 A 22 A 23 A
FUSIBLE LINK BLOCK
F8 A , F9 B
7 1S 8 1J
R- G
G- O
G- B
140A ALT
LG
W
O
R
V
13 14 12
H EL T A
1 A
15 3A 9 IG2 9 ID1 18 IG2
CONTROL SW
OFF
B- L
TAIL
W- B
R- G
LIGHT
G- B
LG
R
HEAD
14 3A
AUTO
FL MAIN
O
3. 0W C12 16
COMBINATION SW 3 4 1
CLTE CLTS CLTB
W- B
DOOR COURTESY SW
A16
CONNECTOR
AUTOMATIC LIGHT
JUNCTION
B 1 CONTROL SENSOR
FRONT LH
BATTERY
J3
B
D16
W- B
ED IJ
2001 SIENNA (EWD420U)
80
SYSTEM OUTLINE
When the light control SW is set at AUTO, the automatic light control system automatically turns on or off the taillights and
headlights depending on the brightness around the vehicle.
AUTOMATIC LIGHT CONTROL OPERATION
The automatic light control sensor converts the intensity of the illumination into frequency and inputs it to the integration
relay. When the light control SW is set at AUTO, the signal is input to TERMINAL (A) 8 of the integration relay, the taillights
and headlights are automatically turned on or off.
Turn on function
When the integration relay receives a frequency signal from the automatic light control sensor, and determines that the
brightness around the vehicle is below a predetermined level, it controls the TERMINALS (A) 9 and (A) 11. This turns on
the taillight relay and HEAD relay, and thus turns on the headlights and taillights.
Turn off function
When the integration relay receivers a frequency signal from the automatic light control sensor, and determines that the
brightness around the vehicle is above a predetermined level, it controls the TERMINALS (A) 9 and (A) 11. This turns off
the taillight relay and HEAD relay, and thus turns off the headlights and taillights. In addition, the headlights and taillights
will be turned off when the ignition SW is turned from on to off and the driver door is opened, during automatic light control.
SERVICE HINTS
C12 COMBINATION SW
12-16 : Closed with the light control SW at AUTO position
D16 DOOR COURTESY SW FRONT LH
1-GROUND : Closed with the driver's door open
: PARTS LOCATION
Code See Page Code See Page Code See Page
A16 34 F8 A 32 J5 35
C12 34 F9 B 32 J18 35
D4 34 I13 A 35
D16 36 J3 35
,,, : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
,,,
,,,
Code See Page Junction Block and Wire Harness (Connector Location)
1B
1C
22 Cowl Wire and Driver Side J/B No.1 (Lower Finish Panel)
No 1
1J
1M
1S 22 Floor Wire and Driver Side J/B No.1 (Lower Finish Panel)
1V
22 Cowl Wire and Driver Side J/B No.1 (Lower Finish Panel)
No 1
1W
2B 24 Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2J
24 Cowl Wire and Engine Room J/B No 2 (Engine Compartment Left)
No.2
2K
3A 26 Cowl Wire and J/B No.3 (Behind the Combination Meter)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID1 42 Instrument Panel Wire and Cowl Wire (The Back Side of the Lower Finish Panel)
IG2 42 Instrument Panel Wire and Cowl Wire (Behind the Combination Meter)
: GROUND POINTS
Code See Page Ground Points Location
ED 40 Near the Left Front Suspension Support
IJ 42 Right Cowl Side Panel
2001 SIENNA (EWD420U)
81
AUTOMATIC LIGHT CONTROL
: SPLICE POINTS
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 44 Cowl Wire
2001 SIENNA (EWD420U)
82
MEMO
2001 SIENNA (EWD420U)
83
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