odometer ACURA NSX 1991 Service Repair Manual

Disassembly

NOTE:
Handle the terminals and printed circuit boards carefully to avoid damaging them.
Replace
the
speedometer,
trip
meter,
and
printed
circuit
board
A as a
unit
if any of
them
is
faulty. Replace the tachometer, odometer, and printed circuit board B as a unit if any of them is faulty.

SPEEDOMETER MOUNTING SCREWS (x3) TACHOMETER MOUNTING SCREWS (x3)
VOLTAGE/FUEL GAUGE
MOUNTING SCREWS (x5) ENGINE COOLANT TEMP./ENGINE OIL PRESSURE
GAUGE MOUNTING SCREWS (x6)
HOUSING
ENGINE COOLANT

TEMPERATURE/

ENGINE OIL PRESSURE GAUGE

Test, page 23-136 and 137

SAFETY INDICATOR
MOUNTING SCREWS (x2) SHIFT INDICATOR
TACHOMETER

Specification, page 23-121
A/T GEAR POSITION
INDICATOR

See page 23-152 ('94-'96) ('91-'93)


LIGHT HOUSING
ODOMETER
SPEEDOMETER

Specification, page 23-121

TRIP METER FUEL/VOLTAGE GAUGE

Test, page 23-121

and 134

FACE PANEL PRINTED CIRCUIT
BOARD B
BOARD-TO-BOARD

CONNECTOR

PRINTED CIRCUIT
BOARD COVER
PRINTED CIRCUIT
BOARD A
SAFETY INDICATOR

See page 23-145 ('93-'96)('91-'92)

TRIP METER
RESET BUTTON
VISORProCarManuals.com

Speedometer/Trip Meter/Odometer

Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.

View from the back of the gauge assemblyProCarManuals.com

View from the back of the gauge assembly.
PRINTED CIRCUIT

BOARD A
BOARD-TO-BOARD CONNECTOR
PRINTED

CIRCUIT BOARD B
NOTE: The number in the table show the troubleshooting sequence.
Speedometer/Trip meter/Odometer

TroubleshootingProCarManuals.com

Speedometer/Trip Meter/Odometer
Troubleshooting (cont'd)
(From previous page)
Reconnect the 3-P connector at
the vehicle speed sensor (VSS).

Raise the rear of the car and sup-

port it with stands.

Back-probe the YEL/RED wire and

connect it to body ground through a voltmeter.

Put the car in neutral with key ON.

Slowly rotate one wheel with the
other wheel blocked. Does voltage pulse from 0 to about 12 V?
Disconnect the 30-P connector at
the speedometer.

Back-probe the YEL/RED wire and

connect it to body ground through a voltmeter.
Slowly rotate one wheel with the
other wheel blocked.
Does the volt meter indicate pulsing voltage?

Replace the speedometer.
Repair open in the YEL/RED wire,

between the VSS and the

speedometer.
Replace the VSS (see page

23-133).ProCarManuals.com

Speedo/Tripmeter/Odometer

Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.
PRINTED CIRCUITPANEL A

JOINT CONNECTOR PRINTED
CIRCUIT PRINEL B
View from the back of the gauge assembly.ProCarManuals.com