Acura RL (1996-2004 year). Instruction — page 72

+

80-11

Gauge Assembly

‘04

See Ground Distribution,
pages 14-9, and 14-11.

Main Circuit

From page
80-10.

GAUGE

ASSEMBLY

PHOTO 212

VIEW 113

19

PNK

See
Immobilizer
System

B

C

SELECT/
RESET
SWITCH

See Dash and
Console Lights

SELECT/
RESET
SWITCH
LIGHT

5

RED/BLK

4

RED

2

See Ground Distribution,
page 14-4.

BLK

BLK

1

GRN/WHT

3

3

BLK/WHT

4

See Dash and
Console Lights

Select

Reset

G251

PHOTO 46

10

A

18

RED/BLK

B

See Lights-on
Indicator

G401

PHOTO 79

BLK

LIGHTS-ON
INDICATOR
LIGHT

To page
80-12.

POINTER
LIGHT

GAUGE
BACKLIGHT

IMMOBILIZER
INDICATOR
LIGHT

Meter Panel and LCD

Dimming Circuit

ODO/
Trip
Indicator

Outside
Air
Temperature

Safety
Display

BLK

Pointer

Dimming Circuit

2004 American Honda Motor Co., Inc.

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How the Circuit Works

80-12

Gauge Assembly

‘04

To page
80-13.

21

RED/

BLU

B

RIGHT
TURN
SIGNAL
INDICATOR
LIGHT

LEFT
TURN
SIGNAL
INDICATOR
LIGHT

VSA
INDICATOR
LIGHT

SRS
INDICATOR
LIGHT

SEAT BELT
REMINDER
INDICATOR
LIGHT

VSA

SIDE
AIRBAG
INDICATOR
LIGHT

– +

CHARGING
SYSTEM
INDICATOR
LIGHT

LOW
ENGINE
OIL
PRESSURE
INDICATOR
LIGHT

ABS
INDICATOR
LIGHT

GAUGE

ASSEMBLY

PHOTO 212

VIEW 113

From page
80-10.

SRS
Indicator
Circuit

13

GRN/YEL

See Turn Signal Lights

From page
80-11.

VSA
Indicator
Circuit

12

PNK/BLU

A

5

WHT/BLU

A

21

GRN

A

3

YEL/RED

A

15

BLU/WHT

B

22

LT GRN/RED

B

6

BLU/WHT

B

See Seat
Reminder

See
Charging
System

See
SRS

See
Engine Oil
Pressure
Indicator
Light

See
SRS

See Vehicle Stability
Assist (VSA) System

ABS
Indicator
Circuit

2004 American Honda Motor Co., Inc.

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How the Circuit Works

+

80-13

Gauge Assembly

‘04

See Climate
Control Unit,
page 60-1.

HIGH BEAM
INDICATOR
LIGHT

GAUGE

ASSEMBLY

PHOTO 212

VIEW 113

RED/GRN

See Headlights

20

B

HIGH BEAM
INDICATOR
LIGHT

DRL
INDICATOR
LIGHT

Canada

From page
80-12.

USA

3

BLU/YEL

B

4

LT GRN/

RED

A

1

BLU

7

GRY

B

2

YEL/BLU

A

20

GRY

19

BRN/WHT

16

RED/BLU

B

6

YEL

C

See PGM-FI

See VSA

See Headlights

See
HVAC

Main Circuit

PNK/BLU

PNK/BLU

A

2

Sensor
ground

CLIMATE
CONTROL
UNIT

PHOTO 201
VIEW 103

BLK

C212

PHOTO 3

2

BRN/WHT

C476

PHOTO 97
VIEW 94

9

C201

PHOTO 112
VIEW 71

7

BRN/WHT

OUTSIDE AIR
TEMPERATURE
SENSOR

PHOTO 3

BLK

C212

PHOTO 3

2

BRN/

WHT

BRN/WHT

See
Cruise
Control

2004 American Honda Motor Co., Inc.

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How the Circuit Works

80-14

Gauge Assembly

How the Circuit Works

The gauge assembly receives battery voltage at all
times through fuse 56 and through fuse 20 (’96-’03)
with the ignition switch in ON (ll) or START (lll). The
gauge assembly also receives battery voltage
through fuse 55 and the gauge relay with the
ignition switch in ON (ll) or START (lll).

Speedometer and Odometer

The speedometer and odometer drive circuits
receive pulses from the vehicle speed sensor
(VSS). The pulse rate increases as the vehicle
speed increases. This speed signal is converted
and displayed by the speedometer, odometer, and
trip meter.

Tachometer

The tachometer drive circuit receives pulses at the
rate of three pulses per engine revolution from the
powertrain control module (PCM). The pulse
frequency increases as the engine speed
increases. This speed signal is converted and
displayed by the tachometer.

WARNING

Do not smoke while working on the fuel system.
Keep open flame away from the work area.
Drain fuel only into an approved container.

Fuel Gauge

The fuel gauge contains two intersecting coils and a
permanent magnet rotor assembly which displays
the fuel level even with the ignition switch in the
LOCK (0) position. The fuel gauge sensor controls
the magnetic field which varies the current to the
fuel gauge and causes the gauge pointer to move.
The fuel gauge indicates a full tank when the
sender resistance is 3.5 to 5 ohms. The fuel gauge
indicates a half tank when the sender resistance is
29.5 to 35.5 ohms. The fuel gauge indicates an
empty tank when the sender resistance is 105 to
108 ohms.

Engine Coolant Temperature Gauge (’96-’02)

The engine coolant temperature gauge contains two
intersecting coils and a permanent magnet rotor
assembly which displays the coolant temperature
even with the ignition switch in the LOCK (0)
position. The coolant temperature sending unit
controls the magnetic field which varies the current
to the coolant temperature gauge and causes the
gauge pointer to move. The coolant temperature
gauge indicates hot, 85

C (185

F) to 100

C (212

F), when the sender resistance is 46 to 30 ohms.
The gauge indicates cold, 56

C (133

F), when the

sender resistance is 137 ohms.

Engine Coolant Temperature Gauge (’03-’04)

The main circuit built into the gauge assembly
controls the engine coolant temperature. The main
circuit receives its input signal from the Engine
Coolant Temperature Sensor (ECT) through the
Powertrain Control Module (PCM). The Engine
Coolant Temperature Sensor (ECT) is a
temperature dependent resistor (thermistor) whose
resistance decreases as the coolant temperature
increases.

Outside Air Temperature Display

The outside air temperature display receives
temperature information from the outside air
temperature sensor through the BRN/WHT wire.
The gauge assembly converts this signal into a
digital display. The climate control system also uses
this sensor.

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

2004 American Honda Motor Co., Inc.

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