Acura RL (1996-2004 year). Instruction — page 98

+

120-17

Power Windows

How the Circuit Works

CAUTION: Disconnect the window switch
connector before you start. You could
unintentionally switch the window to “automatic
down” while working in the driver’s door with the
power on. The moving glass could injure your
arms, hands, or fingers.

Battery voltage is applied at all times through fuse
36 to the power window relay contacts. Fuses 17,
18, 21, and 24 receive voltage through the power
window relay and are controlled by the driver’s
multiplex control unit.

Driver’s Window

The driver’s power window master switch is part of
the door multiplex control unit. When you hold the
driver’s window switch in the UP or DOWN
position, the door multiplex control unit applies
power to the power window control unit which
activates the driver’s window motor in the direction
requested.

Auto Up/Down Feature

The driver’s window is equipped with an AUTO UP
feature. When you momentarily hold the driver’s
window switch in the UP position, the door multiplex
control unit applies power to the driver’s window
motor. As the window moves up, the pulser in the
driver’s window motor sends a pulsing ground
signal to the door multiplex control unit. When the
window reaches the fully up position, the pulsing
signal stops and the door multiplex control unit
removes power from the motor.

The AUTO DOWN feature is similar to the AUTO
UP feature.

Passenger Windows

All windows can be opened and closed at the
driver’s power window master switch. The
passenger windows can be disabled with this
master switch. When the main switch is open,
the power window master relay deenergizes
and removes ground from the passenger
window switches.

Left Rear Window

The left rear window switch receives voltage
through fuse 21. This switch contains two relays
and an UP/DOWN switch. When you press the left
rear window UP/DOWN switch, the corresponding
relay energizes and the window switch relay coils
are grounded through the power window master
relay switch. Voltage is applied to one side of the
window motor by the energized relay. The opposite
power window motor terminal is grounded through
the normally closed relay contacts in the
deenergized power window switch relay. When you
open or close the left rear window from the master
power window switch, the door multiplex control unit
sends a signal to the driver’s multiplex control unit
through the BRN/YEL wire. The driver’s multiplex
control unit turns on the window motor by supplying
power to the YEL or YEL/GRN wire.

Front Passenger’s and Right Rear Windows

The front passenger’s and right rear window
switches receive voltage through fuses 18 and 24
respectively. Each window switch contains two
relays and an up/down switch. When you press the
window UP/DOWN switch, the corresponding relay
energizes and the window switch relay coils are
grounded through the power window master relay
switch. Voltage is applied to one side of the window
motor by the energized relay. The opposite power
window motor terminal is grounded through the
normally closed relay contacts in the deenergized
power window switch relay. When you open or close
the front passenger’s or right rear window from the
master power window switch, the door multiplex
control unit sends a signal to the driver’s multiplex
control unit through the BRN/YEL wire. The driver’s
multiplex control unit sends this request to the
passenger’s multiplex control unit and turns on the
window motor by supplying power to the control
wires to the corresponding window switch.

Refer to the Service Manual (Section 23, Electrical)
for specific tests and troubleshooting procedures.

2004 American Honda Motor Co., Inc.

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122

Moonroof

See Power
Distribution,
page 10-10.

MOONROOF
CONTROL
UNIT

PHOTO 117
VIEW 45

3

C617

PHOTO 118

10

(’99-’04 YEL)

YEL/GRN

))

LIMIT
SWITCH 3

PHOTO 117

1

BLU

MOONROOF
CONTROL UNIT GROUND

PHOTO 118

BLK

4

9

2

7

6

8

RED/

WHT

YEL/

BLU

YEL/

RED

GRN

YEL

BLK

BLK

BLK

YEL/GRN

FUSE 23

SUN ROOF
WASHER
10A

See Power
Distribution,
page 10-12.

UNDER-DASH
FUSE/RELAY
BOX

PHOTO 75

12

C441

PHOTO 108
VIEW 95

12

C404

PHOTO 76
VIEW 49

YEL/GRN

YEL/GRN

YEL/GRN

YEL/GRN

See Power
Distribution,
page 10-12.

FUSE 13

METER
SUN ROOF
7.5A

See Power
Distribution,
page 10-10.

UNDER-DASH
FUSE/RELAY
BOX

PHOTO 75

8

C404

PHOTO 76
VIEW 49

YEL

YEL

’99-’04

’96-’98

(’99-’04 YEL)

YEL/GRN

))

(’99-’04 YEL)

YEL/GRN

))

HOT IN ON OR START

HOT IN ON OR START

2004 American Honda Motor Co., Inc.

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How the Circuit Works

How the Circuit Works

+

122-1

Moonroof

FUSE 51

SUN ROOF
30A

UNDER-HOOD
FUSE/RELAY
BOX

PHOTO 33

MOONROOF
OPEN
RELAY

PHOTO 153
VIEW 15

MOONROOF
CLOSE
RELAY

PHOTO 153
VIEW 14

4

4

(

*

1)
2

)

16

C325

PHOTO 73
VIEW 76

16

C442

PHOTO 108
VIEW 92

5

C307

PHOTO 37
VIEW 47

GRN

GRN

GRN

(

**

YEL)

YEL/GRN

GRN

BLK

BLK

LIMIT
SWITCH 4

PHOTO 118

LIMIT
SWITCH 1

PHOTO 116

1

C617

PHOTO 118

BLU

2

GRN

MOONROOF
SWITCH

5

1

3

4

BLK

OPEN
(AUTO)

OPEN

CLOSE

OFF

TILT

RED/WHT

YEL/BLU

YEL/RED

YEL

See Ground
Distribution,
page 14-15.

GRN/YEL

2

1

MOONROOF
MOTOR

PHOTO 116

C618

PHOTO 118

RED

BLK

GRN/RED

2

C617

PHOTO 118

LIMIT
SWITCH 2

PHOTO 116

YEL/RED

YEL/RED

G602

PHOTO 153

YEL/BLU

GRN

BLK

OFF

GRN/YEL

GRN/YEL

GRN/YEL

YEL/

BLU

GRN

BLU

GRN/RED

C5

PHOTO 116

YEL

RED

1

2

C5

PHOTO
116

GRN/

RED

GRN/YEL

YEL/GRN

M

(

**

YEL)

YEL/GRN

*

= ’98-’04

**

= ’99-’04

(

*

3)
6

)

1

)

(

*

2)

3

)

(

*

5)

1

)

(

*

2)

3

)

(

*

5)

(

**

YEL)

(

*

1)
2

)

(

*

3)
6

)

HOT AT ALL TIMES

2004 American Honda Motor Co., Inc.

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How the Circuit Works

How the Circuit Works

122-2

Moonroof

How the Circuit Works

The moonroof is controlled by the moonroof control
unit, moonroof switch, moonroof “open” relay,
moonroof “close” relay, four limit switches, and the
moonroof motor. With the ignition switch in ON (II)
or START (III), voltage is supplied to the moonroof
control unit, moonroof “open” relay coil, and
moonroof “close” relay coil through fuse 23 (‘96-‘98)
or fuse 13 (’99-’04). Fuse 51 supplies voltage to the
moonroof “open” relay and the moonroof “close”
relay normally-open contacts. The moonroof
functions are controlled by the moonroof control unit
which receives inputs from limit switch 1, limit
switch 2, and limit switch 3.

Refer to the Service Manual (Section 23, Electrical)
for specific tests and troubleshooting procedures.

2004 American Honda Motor Co., Inc.

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