Acura RL (1996-2004 year). Manual — part 87
110-26
Headlights
5
2
3
1
GAUGE
RELAY
G301
See Ground
Distribution,
page 14-6.
See Power
Distribution,
page 10-10.
METER
SUN ROOF
7.5A
See Power
Distribution,
page 10-10.
YEL
YEL
C331
2
See Gauge
Assembly,
page 80-5 or 80-9.
A
22
B
17
WHT/RED
See Gauge Assembly
WHT/RED
GAUGE
ASSEMBLY
PHOTO 71 (’99-’03)
PHOTO 212
VIEW 113
METER
15A
RED/YEL
C307
1
UNDER-
HOOD
FUSE/
RELAY
BOX
UNDER-
DASH
FUSE/
RELAY
BOX
(RUNNING LIGHT)
7.5A
YEL/RED
C403
11
(RUNNING LIGHT)
10A
RED/BLU
C405
6
9
YEL
C504
7
YEL
See Ground
Distribution,
page 14-4.
G251
DRL indicator
light control
Headlight
ON input
UNDER-
HOOD
RELAY
BOX C
DAYTIME
RUNNING
LIGHTS
CONTROL
UNIT
(’99-’02 4)
7
)
See Ground
Distribution,
page 14-16.
G651
(’99-’02 7)
4
)
BLK
BLK
BLK
Ground
3
C414
9
C414
2
GRN/RED
GRN/RED
6
See Brake
System
Indicator Light
PARKING
BRAKE SWITCH
Closed with
parking brake
applied.
YEL/RED
RED/BLU
Ignition
input
Battery
input
GRN/RED
GRN/RED
Parking
brake
input
C410
9
PNK
8
PNK
To page 110-23 (’99)
or 110-25 (’00).
BLK
GRN/RED
Brake
indicator
control
See Brake
System
Indicator Light
13
12
2
‘99-’04 Canada
HOT IN ON OR START
HOT IN ON
HOT AT ALL TIMES
HOT AT ALL TIMES
DRL
INDICATOR
LIGHT
2004 American Honda Motor Co., Inc.
▼
▼
+
–
110-27
Headlights
How the Circuit Works
WARNING
A transient high tension (25,000 V) occurs at the
bulb sockets of the high intensity discharge
(HID) lamps when the combination light switch
is turned ON. It may cause serious electrical
shock or electrocution if you do not observe the
cautions below.
CAUTION
•
Never turn on the combination light switch
before fitting the HID bulbs to their bulb
sockets and completing the reassembly of
the headlight assembly.
•
Do not service the headlight assembly in wet
conditions, such as rain or snow, near a
sprinkler system, or when your hands are
wet to prevent electrocution.
•
Do not touch the surface of the HID bulbs
with your bare hands and do not stain it with
any oils or fats.
•
Do not disassemble the inverter unit and the
igniter unit.
•
Do not turn on the HID bulb by using a power
source other than the battery mounted on the
vehicle.
Daytime Running Lights
When you turn the ignition switch to ON (II) with the
parking brake released, the daytime running lights
control unit supplies about 6 volts to the RED/BLU
wire (cavity 10), about 12 volts to the YEL/BLU wire
(cavity 1), and ground to the RED/BLU wire (cavity
11). This provides about 6 volts to both high beam
headlights, causing them to come on at reduced
brightness. If you apply the parking brake, ground is
applied to the daytime running lights control unit at
the GRN/WHT wire. If the parking brake is applied
before you turn the ignition switch to ON (II), the
daytime mode will remain off until you release the
parking brake. Once the high beams are in the
daytime mode, applying the parking brake will not
turn them off. When you switch to low beam, high
beam, or flash-to-pass operation, ground is applied
to the daytime running lights control unit through the
PNK wire, and the control unit then turns off the
daytime running lights mode.
Low Beams
The headlight low beam and high beam relays
receive battery voltage at all times. When you turn
the headlight switch to the HEAD position with the
dimmer switch in LOW, ground is applied through
the BLU/RED wire and lighting diode to the coils of
the headlight low beam and high beam relays. This
energizes the relays, applying battery voltage to the
left and right low beam headlights through fuses 46
and 45, which are grounded by G301 and G201
respectively.
High Beams
When you pull the dimmer switch to HIGH with the
low beams already on, ground is applied to the
dimmer relay from the dimmer switch. This
energizes the dimmer relay, applying ground
through the RED/BLU wire to the daytime
running lights control unit (cavity 10). The control
unit applies voltage to the high beam bulbs and
high beam indicator, which turns on the high beams
and indicator light. The low beam headlights go off
because their ground path is interrupted by the
activated dimmer relay.
Flash-to-Pass
When you hold the flash-to-pass switch in the ON
position, ground is applied through the BLU/RED
wire and the lighting diode to the coils of the
headlight low beam and high beam relays and
through the RED/BLU wire to the coil of the dimmer
relay. This energizes the headlight low beam and
high beam relays, applying battery voltage to the
low beam bulbs and the daytime running lights
control unit, and to the dimmer relay. The dimmer
relay is energized, applying ground through the
RED/BLU wire to the daytime running lights control
unit. The control unit applies voltage to the high
beam bulbs and high beam indicator, which turns
on the high beams and indicator light. The low
beams go off because their ground path is
interrupted by the activated dimmer relay.
2004 American Honda Motor Co., Inc.
▲
▼
▲
▼
110-28
Cornering Lights
’96-’98
To page
110-29.
See Power Distribution,
page 10-8.
(Navi 2)
5
)
COMBINATION
LIGHT
SWITCH
Turn
Signal
Switch
UNDER-
DASH
FUSE/
RELAY
BOX
G401
Left
Control
Right
Control
HAZARD
WARNING
SWITCH
Flasher
Left
input/
control
Right
input/
control
Battery
input
Ground
TURN
SIGNAL/
HAZARD
RELAY
UNDER-
DASH
FUSE/
RELAY
BOX
BLK
BLK
(Navi 3)
4
)
BLK/RED
(Navi 5)
2
)
RED
20
4
C502
20
C403
7
C415
6
8
Turn
Left
Turn
Right
2
6
4
8
3
)
(Navi 4)
C502
HAZARD
10A
C301
4
1
WHT/GRN
WHT/GRN
ECU
20A
C405
2
BLK/YEL
9
C415
1
3
5
See Power
Distribution,
page 10-8.
UNDER-DASH
FUSE/RELAY
BOX
UNDER-HOOD
FUSE/RELAY
BOX
RED/BLK
1
4
C406
BLK/YEL
GRN/WHT
OFF
ON
BLK/YEL
See Ground
Distribution,
page 14-8.
C331
GRN/WHT
GRN/WHT
BLK/RED
See Ground
Distribution,
page 14-8.
14
12
TURN SIGNAL
LIGHT DIODE
RED
BLK/RED
13
PNK/BLU
16
C331
To page
110-29.
GRN/YEL
14
C502
See Turn
Signal and
Hazard
Warning
Lights
See Turn Signal
and Hazard
Warning Lights
HAZARD
WARNING
SWITCH
LIGHT
1
2
HOT IN ON OR START
HOT AT ALL TIMES
2004 American Honda Motor Co., Inc.
▲
▲
+
–
110-29
Cornering Lights
’96-’98
G1
SMALL LIGHT
7.5A
C306
9
C29
3
RED/BLK
RED/YEL
RED/YEL
UNDER-
HOOD
FUSE/
RELAY
BOX
Left Front
Parking Light
Connector
2
RED/YEL
RIGHT
CORNERING
LIGHT
CORNERING
LIGHT
CONTROL
UNIT
RED/YEL
C29
7
BLU/RED
BLU/RED
LEFT
FRONT
PARKING
LIGHT
RED/YEL
LEFT
CORNERING
LIGHT
BLU/WHT
8
BLU/WHT
BLK
5
BLK
BLK
BLK
BLK
2
2
1
1
G21
2
GRN/BLU
PNK/BLU
PNK/BLU
2
LEFT FRONT
TURN SIGNAL
LIGHT
PNK/BLU
Left Front
Turn Signal
Light
Connector
2
From page
110-28.
1
GRN/YEL
GRN/YEL
GRN/YEL
2
RIGHT FRONT
TURN SIGNAL
LIGHT
GRN/YEL
Right Front
Turn Signal
Light
Connector
2
From page
110-28.
2
GRN/YEL
C202
7
GRN/YEL
C477
2
GRN/YEL
GRN/YEL
GRN/YEL
PNK/BLU
+
–
See Power
Distribution,
page 10.
6
WHT
5A
CORNERING
LIGHT
IN-LINE FUSE
T3
CYLINDER
BLOCK
BLK
BLK
WHT
WHT
C28
FUSIBLE
LINK
BATTERY
NOTE: Wires that look like this are part of the optional cornering
lights harness installed between factory harness connectors.
HOT WITH HEADLIGHT
SWITCH IN PARK OR HEAD
2004 American Honda Motor Co., Inc.
▼
▼
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