Acura RL (1996-2004 year). Instruction — page 110

+

147-3

Seat Heater

How the Circuit Works

With the ignition switch in ON (ll), battery voltage is
provided through fuse 19 to the coil of the front seat
heater relay. The coil of the relay is grounded at
G251 (’96-’97 and ’99-’04) or G301 (’98). Battery
voltage is provided through fuse 5 to the closed
contacts of the energized relay to both seat heater
switches.

Two heaters are provided in each front seat. One is
located in the seat cushion and the other in the
seat back.

When the driver’s seat heater switch is in the LO
position, current flows in series through the seat
heater switch, the BLU wire, and the cushion and
back seat heaters to G651. Current is limited
because it is flowing through both seat heaters in
series, making the seat warm enough for
moderately cold weather.

When the switch is in the HI position, current flows
through the seat heater switch, the GRN wire, the
circuit breaker and thermostat, and through the
cushion and seat back heaters in parallel. The
cushion heater is grounded through the BLU wire
and the driver’s seat heater switch to G251. The
seat back heater is grounded at G651. Since the
cushion and seat back heaters are now in parallel,
current flow through them increases and the seat
warms up to its maximum temperature. The circuit
breaker and thermostat in the seat cushion will
open at 122

°

F (50

°

C) to maintain a constant seat

temperature and prevent overheating. The front
passenger’s seat heaters work the same way.

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

2004 American Honda Motor Co., Inc.

Circuit Index

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Menu

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148

Power Mirror Defoggers

3

BLK/WHT

DEFOGGER

BLK

BLK

C6

1

C6

2

See Power Distribution,
page 10-10.

RIGHT
POWER
MIRROR

DEFOGGER

C412

PHOTO 110
VIEW 96

FUSE 55

METER
15A

See Ground
Distribution,
page 14-9
or 14-11.

C412

PHOTO 110
VIEW 96

BLK

BLK

BLK

BLK

See Ground
Distribution,
page 14-12.

BLK

BLK

BLK

G401

PHOTO 79

BLK

C768

PHOTO 144
VIEW 43

4

C445

PHOTO 110
VIEW 97

LEFT
POWER
MIRROR

C748

PHOTO 140
VIEW 41

4

C748

PHOTO 140
VIEW 41

3

(

*

5)

1

(

*

3)

5

FUSE 13

METER (’96-’98)
METER
SUN ROOF (’99-’04)
7.5A

See Power Distribution,
page 10-10.

C307

PHOTO 37
VIEW 47

1

YEL

C331

PHOTO 75
VIEW 66

2

YEL

UNDER-DASH
FUSE/RELAY
BOX

PHOTO 75

UNDER-HOOD
FUSE/RELAY
BOX

PHOTO 33

RED/YEL

GAUGE
RELAY

PHOTO 27

BLK

BLU/RED

C445

PHOTO 110
VIEW 97

BLU/RED

BLU/RED

BLK

G402

PHOTO 106

BLU/RED

BLU/RED

See Ground
Distribution,
page 14-6.

G301

PHOTO 31

UNDER-
HOOD
RELAY
BOX C

PHOTO 23

2

See Gauge
Assembly

WHT/RED

WHT/RED

C412

PHOTO 110
VIEW 96

ON

OFF

Mirror
Defogger
Switch

POWER
MIRROR
SWITCH

VIEW 46

ON INDICATOR

See DPMS

C325

PHOTO 73
VIEW 76

9

WHT/RED

WHT/RED

WHT/RED

B (C752)

PHOTO 138

1

B (C752)

PHOTO 138

2

A

7

BLK

C768

PHOTO 144
VIEW 43

3

24

20

20

BLU/RED

31

BLK/WHT

31

BLU/RED

WHT

BLK

BLK

BLK

C7

1

C7

2

*

= ’98-’04

HOT IN ON OR START

HOT AT ALL TIMES

2004 American Honda Motor Co., Inc.

Circuit Index

Circuit Index

Menu

Menu

150

Stereo Sound System

See Power
Distribution,
page 10-15.

Standard Sound System (’96-’98)

FUSE 4

ACC
RADIO
10A

FUSE 57

INTERIOR LIGHTS
20A

UNDER-HOOD
FUSE/RELAY
BOX

PHOTO 33

UNDER-
DASH
FUSE/
RELAY
BOX

PHOTO 75

See Power
Distribution,
page 10-5.

C404

PHOTO 76
VIEW 49

6

WHT/

YEL

See Power
Distribution,
page 10-5.

3

WHT/

YEL

WHT/BLU

1

WHT/RED

See
Cigarette
Lighter

5

WHT/RED

5

WHT/RED

2

C307

PHOTO 37
VIEW 47

WHT/YEL

5

C328

PHOTO 72
VIEW 48

WHT/BLU

WHT/BLU

CIGARETTE
LIGHTER
RELAY

PHOTO 50

C464
(Terminals 17-20)

PHOTO 103
VIEW 82

UNDER-HOOD
RELAY BOX B

PHOTO 49

2

See Power
Distribution,
page 10-17.

REAR
WINDOW

4

3

A

See Dash
and Console
Lights

RED/BLK

FUSE 56

BACK UP RADIO
7.5A

7

WHT/YEL

14

5

8

12

13

1

C465

PHOTO 98

GRN/RED

WHT/BLU

19

C415

PHOTO 81
VIEW 77

CABLE
REEL

PHOTO 89

STEERING WHEEL

RADIO REMOTE SWITCH

See Ground
Distribution,
page 14-3.

BLK

G251

PHOTO 46

Volume
Down
Switch

Volume
Up
Switch

Seek
Up
Switch

See Ground
Distribution,
page 14-12.

G402

PHOTO 106

RED

See
Security
System

See Dash
and Console
Lights

A

BLU

(Navi GRN)

B

BLK

BLK

G403

PHOTO 94

BLK

A

11

2

YEL/RED

(Not
used)

Ignition
input

Ground

Battery
input

Illumination
(–)

Illumination
(+)

Antenna
input

Not
Used

Radio remote
switch input

WHT/YEL

Radio
Window
Antenna

RADIO
ANTENNA
SHIELD
GROUND

PHOTO 120

ANTENNA

LEAD

BLK

4

GRN/RED

PHOTO 120

HOT IN ACC OR ON

HOT AT ALL TIMES

2004 American Honda Motor Co., Inc.

Circuit Index

Circuit Index

Menu

Menu

+

150-1

Stereo Sound System

Standard Sound System (’96-’98)

CD
CHANGER

3

AUDIO

UNIT

VIEW 108

WHT

1

C746

PHOTO 139

DIN

CORD

LEFT
TWEETER

PNK

2

C746

PHOTO 139

DRIVER’S
DOOR
SPEAKER

PNK

7

1

2

2

WHT

WHT

8

C412

PHOTO 110
VIEW 96

10

GRY/RED

1

C766

PHOTO 139

RIGHT
TWEETER

GRN/YEL

2

C766

PHOTO 139

FRONT
PASSEN-
GER’S
DOOR
SPEAKER

GRN/YEL

7

1

2

1

GRY/RED

GRY/RED

8

C445

PHOTO 110
VIEW 97

9

A

7

BLU/YEL

1

LEFT
REAR
SPEAKER

2

15

GRY

4

8

1

1

RIGHT
REAR
SPEAKER

2

16

A

BRN/WHT

2

C441

PHOTO 108
VIEW 95

RED/

YEL

6

8

1

19

LEFT
REAR
DOOR
SPEAKER

2

2

WHT

7

C409

PHOTO 79
VIEW 61

20

ORN

7

9

1

19

RIGHT
REAR
DOOR
SPEAKER

2

3

B

BLU/ORN

10

C441

PHOTO
108
VIEW
95

20

C609

PHOTO
131
VIEW
84

BLU/BLK

PNK

GRN/YEL

C663

PHOTO 131
VIEW 86

BLU/YEL

GRY

BRN/WHT

RED/

YEL

WHT

ORN

BLU/ORN

BLU/BLK

WHT

ORN

WHT

ORN

BLK

BLK

RED

BLK

Interface +

+

+

+

+

+

2004 American Honda Motor Co., Inc.

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