ACURA NSX 1997 Service Repair Manual

Entry Light Timer System:

Terminal Test condition

Test: Desired result
Possible cause if result is not obtained

A8

A9

WHT/BLK

GRN/BLU2
Under all conditions

Under all conditions

Under all conditions

Driver's door open
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Attach to ground: Foot well light

should come on.

Check for voltage to ground:

There should be 1 V or less.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown bulb or No. 34 (15 A) fuse

• An open in the wire

• Faulty driver's door switch

• Poor ground (G401, G402, G403)

• An open in the wire

Key-in Reminder System:

Terminal Test condition
Test: Desired result
Possible cause if result is not obtained

A8

A9

GRN/BLU2

BLU/GRN
Under all conditions

Under all conditions

Driver's door open

Ignition key is inserted

all the way into the igni-

tion switch
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be 1 V or less.

Check for voltage to ground:

There should be 1 V or less.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Faulty driver's door switch

• Poor ground (G401, G402, G403)

• An open in the wire

• Faulty ignition key switch

• Poor ground (G401, G402, G403)

• An open in the wire

(cont'd)ProCarManuals.com

Integrated Control Unit

Input Test (cont'd)

Lights-on Reminder System:

Terminal
Test condition
Test: Desired result
Possible cause if result is not obtained

A8

A9

A5

GRN/BLU2

A6

ORN
Under all conditions

Under all conditions

Ignition switch ON (II)

Driver's door open

Headlight switch ON

Connect the A9 terminal

to the ORN terminal
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be 1 V or less.

Check for voltage to ground:

There should be battery voltage.

Check chime operation:

Chime should activate each time the

battery is connected.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown No. 5(15 A) fuse

• An open in the wire

• Faulty driver's door switch

• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 38(15 A) fuse

• Faulty headlight switch

• Faulty taillight relay

• An open in the wire

• Faulty chime

• Poor ground (G401, G402, G403)

• An open in the wire

Seat Belt Reminder System:

Terminal Test condition
Test: Desired result
Possible cause if result is not obtained

A8

A9

A5

A13
Under all conditions

Under all conditions

Ignition switch ON (II)

Ignition switch ON (II)

and driver's seat belt

not buckled
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be 1 V or less.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown No. 5 (15 A) fuse

• An open in the wire

• Faulty seat belt switch

• Poor ground (G401, G402, G403)

• An open in the wireProCarManuals.com

Rear Window Defogger Timer System:

Terminal Test condition
Test: Desired result
Possible cause if result is not obtained

A8

A9

A5

WHT/RED

A10
Under all conditions

Under all conditions

Ignition switch ON (II)

Defogger switch

pushed

Ignition switch ON (II)
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for continuity to ground:

There should be continuity as the

switch is pushed.

Attach to ground: The rear window

defogger should work and the

defogger switch indicator light

should come on.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown No. 5 (15 A) fuse

• An open in the wire

• Faulty defogger switch

• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 4 (15 A) fuse

• Faulty defogger relay

• Blown bulb

• An open in the wire

Oil Pressure Indicator System:

Terminal Test condition
Test: Desired result
Possible cause if result is not obtained

A8

A9

A5 '

WHT/BLU2

YEL/RED
Under all conditions

Under all conditions

Ignition switch ON (II)

Engine running

Ignition switch OFF

Ignition switch ON (II)

Start the engine.
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for continuity to ground:

There should be continuity.

Check indicator light operation.

If the light does not come on, attach

the YEL/RED terminal to ground: The

light should come on as the ignition

switch is turned ON (II).

Check for voltage to ground:

There should be battery voltage.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown No. 5 (15 A) fuse

• An open in the wire

• Faulty charging system

• An open in the wire

• Faulty engine oil pressure switch

• An open in the wire

• Blown bulb

• An open in the wire

• Insufficient oil

• Improper lubrication

• Faulty engine oil pressure switch

(cont'd)ProCarManuals.com

Integrated Contro l Uni t
Inpu t Tes t (cont'd )
Side Marke r Ligh t Flashe r System :
Termina l Tes
t conditio n Test: Desire d resul t Possible caus e if resul t i s no t obtaine d
A8
A9
A 5
A 6
A1 1
A3
PNK/BL U
BLU/WH T
Under al l condition s
Under al l condition s
Ignition switc h O N (II )
Headligh t switc h O N (II )
Ignitio n switc h O N (II )
and tur n signa l switc h in
lef t positio n
Ignition switc h O N (II )
an d tur n signa l switc h i n
righ t positio n
Connec t th e A 9 termina l
t o th e PNK/BL U
(o r BLU/WHT
1) terminal .Chec
k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r voltag e t o ground :
Ther e shoul d b e batter y voltage .
Chec k fo r voltag e to ground :
Ther e shoul d b e batter y voltage .
Chec k fo r voltag e t o ground :
Ther e shoul d b e batter y voltage .
Chec k fo r voltag e t o ground :
It shoul d chang e fro m 0 - 1 2 - 0 V
repeatedly .
Chec k th e fron t sid e marke r lights :
Th e lef t (o r right ) fron t sid e marke r
ligh t shoul d com e o n a s th e
batter y is connected . •
Poo r groun d (G401 , G402 , G403 )
• A n ope n in th e wir e
• Blow n No . 3 4 (1 5 A ) fus e
• A n ope n in th e wir e
• Blow n No . 5 (1 5 A ) fus e
• A n ope n in th e wir e
• Blow n No . 3 8 (1 5 A ) fus e
• Fault y headligh t switc h
• Fault y tailligh t rela y
• A n ope n in th e wir e
• Blow n No . 4 6 (1 0 A ) fus e
• Fault y tur n signal/hazar d rela y
• A n ope n i n th e wir e
• Blow n bul b
• Poo r groun d (G301 )
• A n ope n in th e wir e
Powe r Windo w Key-of f Time r System :
Termina l Tes
t conditio n Test
: Desire d resul t
Possible caus e if resul t i s no t obtaine d
A8
A 9
A 5
GRN/BLU2
GRN/RE D
A14
Unde r al l condition s
Unde r al l condition s
Ignition switc h O N (II )
Driver' s doo r ope n
Passenger' s doo r ope n
Connec t th e A 9 termina l
to th e A1 4 terminal .
Check fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r voltag e t o ground :
Ther e shoul d b e batter y voltage .
Chec k fo r voltag e t o ground :
Ther e shoul d b e batter y voltage .
Chec k fo r voltag e t o ground :
Ther e shoul d b e 1 V or less .
Chec k windo w operation : Th e powe r
window s shoul d wor k wit h th e ke y
OFF .
• Poo r groun d (G401 , G402 , G403 )
• A n ope n i n th e wir e
• Blow n No . 34(1 5 A ) fus e
• A n ope n i n th e wir e
• Blow n No . 5 (1 5 A ) fus e
• A n ope n in th e wir e
• Fault y doo r switc h
• Poo r groun d (G401 , G402 , G403 )
• A n ope n in th e wir e
• Fault y powe r windo w rela y
• Poo r groun d (G201 )
• A n ope n in th e wir e
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Combined Operation Wiper/Washer System:

Terminal
Test condition
Test: Desired result

Possible cause if result is not obtained

A8

A9

A5

BLU/RED

YEL

A4

A1

and

A2

A7
Under all conditions

Under all conditions

Ignition switch ON (II)

Ignition switch ON (II)

Ignition switch ON (II)

and wiper switch at INT

position

Ignition switch ON (II)

and washer switch

pushed

Intermittent dwell time

control ring turned

Ignition switch ON (II)

and wiper switch OFF
Check for continuity to ground:

There should be continuity.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for voltage to ground:

There should be battery voltage.

Check for resistance between the A1

and A2 terminals:

It should vary from 0 to 28,000 ohms

as the ring is turned.

Check for voltage to ground:

There should be battery voltage.
• Poor ground (G401, G402, G403)

• An open in the wire

• Blown No. 34 (15 A) fuse

• An open in the wire

• Blown No. 5 (15 A) fuse

• An open in the wire

• Blown No. 26 (40 A) fuse

• Faulty wiper intermittent relay

• An open in the wire

• Blown No. 6 (7.5 A) fuse

• Faulty wiper switch

• An open in the wire

• Blown No. 6(7.5 A) fuse

• Faulty washer switch

• An open in the wire

• Faulty intermittent dwell time

controller

• An open in the wire

• Blown No. 26 (40 A) fuse

• Faulty wiper motor (automatic-stop

circuit)

• An open in the wireProCarManuals.com

Lights-on Reminde r Syste m
Chime Tes t
NOTE : Refe r t o pag e 23-168 for the input test of the
lights-on reminde r circuit.
Whe n th e ignitio n ke y i s turne d of f an d remove d wit h
th e light s on , voltag e is applie d t o th e reminde r circui t i n
th e integrate d contro l unit . Whe n yo u ope n th e driver' s
door , th e circui t sense s groun d throug h th e close d doo r
switch . Wit h voltag e a t th e "A6 " terminal , groun d a t th e
"GRN/BLU
2" terminal , an d n o voltag e a t th e "A5 " termi -
nal , th e chim e sound s t o remin d th e drive r t o tur n of f
th e lights .
1 . Remov e th e dashboar d lowe r cover , an d disconnec t
th e connectors .
CONNECTOR S
DASHBOARDLOWERCOVER
CHIME
Vie w fro m wir e sid e
2. Tes t th e chim e b y connectin g batter y powe r t o th e
"B " terminal , an d groun d t o th e "A " terminal , an d
cyclin g th e powe r on-of f repeatedly .
3 . I f th e chim e fail s t o soun d ever y tim e powe r i s
cycled , replac e it .
ProCarManuals.com

Key-in Reminde r Syste m
Ignitio n Ke y Switc h Tes t
NOTE : Refe r t o pag e 23-167 for the input test of the
key -in reminder beeper circuit.
Whe n th e ignitio n ke y i s no t removed , th e key-i n
reminde r i n th e integrate d contro l uni t sense s groun d
throug h th e close d ignitio n ke y switch . Whe n yo u ope n
th e driver' s door , th e reminde r circui t sense s groun d
throug h th e close d doo r switch . Wit h groun d a t th e
"BLU/GRN " an d "GRN/BLU
2" terminals , th e beepe r
sounds.
1. Remov e th e dashboar d lowe r cover , an d disconnec t
th e floo r wir e harnes s connectors .
DASHBOAR DLOWERCOVER
3. Disconnec t th e 8 P connecto r fro m th e floo r wir e
harness .
4. Ther e shoul d b e continuit y betwee n th e No . 8 an d
No . 7 terminal s whe n th e ignitio n ke y i s inserted .
Ther e shoul d b e n o continuit y wit h th e ignitio n ke y
removed .
View fro m wir e sid e
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Lighting Syste m
Componen t Locatio n Inde x
RETRACTABL E HEADLIGH TCONTROL UNI T
Inpu t Test , pag e 23-18 0
HIGH BEA M INDICATO R LIGH T
(I n th e gaug e assembly )
Gaug e Assembly , pag e 23-12 1
COMBINATIO NLIGHT SWITC H
Test , pag e 23-18 3
Replacement , pag e 23-18 4
DAYTIM E RUNNIN G LIGHT S
CONTRO L UNI T (Canada )
Test , pag e 23-18 2
SECURIT Y CONTRO L UNI T
Inpu t Test , pag e 23-322 UNDER-HOO
D
RELA Y BO X B
RIGH T HEADLIGH T RETRACTO R
CUT RELA YWire colors : BLU/GRN ,BLK, YEL , BLKTest , pag e 23-19 2
LEFT HEADLIGH T RETRACTO R
CUT RELA YWire colors : BLU/BLK ,BLK, YEL/GRN , BL KTest , pag e 23-19 2
ProCarManuals.com

UNDER-HOOD FUSE/RELA Y BO X
DIMME R RELA Y
Test , pag e 23-19 1
TAILLIGH T RELA YTest, pag e 23-19 2
RIGH T HEADLIGH T
RETRACTO R MOTO R
Test , pag e 23-190
Replacement , pag e
23-18 8
HEADLIGH T RELA YTest, pag e 23-19 1
LEF T HEADLIGH T
RETRACTO R RELA YTest, pag e 23-19 2
RIGH T HEADLIGH T
RETRACTO R RELA YTest, pag e 23-19 2
RIGH T DAYTIM E RUNNIN G
LIGH T (Canada )
Replacement , page , 23-19 6 LEF
T HEADLIGH T
RETRACTO R MOTO R
Test , pag e 23-19 0
Replacement , pag e 23-18 8
HEADLIGHT SAdjustment, pag e 23-19 4
Replacement , pag e 23-19 5
LEFT DAYTIM E RUNNIN G LIGH T (Canada )
Replacement , pag e 23-19 6
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Switches

The lighting system is controlled by five switches and the turn signal cancel unit.

HEADLIGHT SWITCH
HAZARD WARNING SWITCH

TURN SIGNAL and DIMMER SWITCH

TURN SIGNAL CANCEL SWITCH
TURN SIGNAL CANCEL UNITProCarManuals.com