1991 ACURA NSX Service Repair Manual

ACTUATOR ASSEMBLY
Test
,
paga 23-302
Cabl
e
Adjustment,
pag
e
23-303
SPEE
D
SENSORTest
,
page 23-129
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Troubleshooting

NOTE:

The numbers in the table show the troubleshooting sequence.

Before troubleshooting.

Check the No. 5 (10A) fuse in the under-dash fuse box, and the No. 29 (50A), No. 45 (20A) fuses in the under-

hood fuse/relay box.

Check that the horns sound.

Check the tachometer for proper operation.ProCarManuals.com

Cruise Control

Control Unit Input Test

CAUTION:
All SRS electrical wiring harnesses are covered with
yellow outer insulation.
Before disconnecting the SRS wire harness, install
the short connector on the airbag (see page 23-323).

Replace the entire affected SRS harness assembly
if it has an open circuit or damaged wiring.
Remove the glove box, then disconnect the 14-P
connector from and the control unit. Make the fol-
lowing tests at connector terminals: NOTE: Recheck the connections between the 14-P
connector and from the control unit, then replace the
control unit if all input tests prove OK.
SRS MAIN WIRE HARNESS

CRUISE CONTROL

UNIT

View from
wire sideProCarManuals.com

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Cruise Control

Main Switch Replacement

CAUTION:
All SRS electrical wiring harnesses are covered with
yellow outer insulation.Before disconnecting the SRS wire harness, install
the short connector on the airbag (see page 23-323). Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.
1. Remove the dashboard lower cover and disconnect the 2-P connectors from the floor wire harness.

SRS MAIN WIRE HARNESS

2-P

CONNECTORS
LIGHTS-ON CHIME

FOOT LIGHT DASHBOARD
LOWER COVER

2. Remove the dashboard center panel.

DASHBOAD CENTER
PANEL

3.
Remove
the
tilt
cover.

TILT COVER
4. Remove the steering column lower cover and upper
cover.
5. Disconnect the 16-P connector and the 10-P
connector.

10-P

CONNECTOR
16-P CONNECTOR

CAUTION: Be careful not to damage the SRS wires.ProCarManuals.com

6. Remove the 4 screws from the lighting switch.

7. Remove the lighting switch (main switch).

LIGHTING SWITCH

10-P CONNECTOR

16-P CONNECTOR
Main Switch Test

1. Remove the dashboard lower panel and dashboard

center cover.

2. If necessary, remove the knee bolster.

3. Check for continuity between the terminals in each

switch position according to the table.

CRUISE

MAIN

SWITCH

16-P CONNECTOR

View from terminal sideProCarManuals.com

Troubleshooting

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

Security Alarm System

Control Unit Input Test

Remove the glove box to disconnect the 22-P connec-

tor and 16-P connector from the control unit.

Make the following input tests at the harness pins.

NOTE:

Recheck the connections between the 22-P con-

nector and the control unit, the 16-P connector

and the control unit, then replace the control unit

if all input tests prove OK.

Several different wires have the same color. They

have been given a number suffix to distinguish

them (for example YEL/GRN1 and YEL/GRN2 are

not the same).

YEL
YEL/GRN2

WHT

BLU
LT GRN/RED

RED/YEL
BLU/RED1
LT GRN/WHT

BLK/YEL

GRN
YEL/BLU

BLU/GRN

BLK/BRN
GRY/WHT
BLU/YEL

BLU/GRN
LT GRN

BLK
View from

wire side
22-P

CONNECTOR
SECURITY

CONTROL UNIT

16-P CONNECTOR

BLU/RED3
BLU/RED2

GRN/WHT
BRN/WHT

BLK/GRN
GRN/RED

GRN/BLU
GRN/YEL1

GRN/YEL2ProCarManuals.com