1997 ACURA NSX ignition

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
ProCarManuals.com

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

Wire
Test condition

Test: Desired result
Possible cause if result is not obtained

LT
GRN/

RED
Passing switch ON
Check for voltage to ground:

There should be battery voltage.
• Faulty headlight relay or passing

switch

• An open in the wire

BLU/RED
Retractor motor stationary
Check for voltage to ground:

There should be battery volt-

age.
• Blown No. 42 (15 A) fuse

• Faulty right retractor relay

• An open in the wire

BLU1
• Blown No. 43 (15 A) fuse

• Faulty left retractor relay

• An open in the wire

Under all conditions

YEL
Check for continuity to ground:

There should be continuity.
• Faulty right retractor cut relay

• Poor ground (G202)

• An open in the wire

YEL/GRN
• Faulty left retractor cut relay

• Poor ground (G202)

• An open in the wire

Ignition switch ON

RED/YEL4
Connect battery power:

The retractable headlight mal-

function indicator should come

on.
• Faulty safety indicator circuit

• An open in the wire

Headlight retractor switch

OFF (retractable headlight

closed)

Connect an ohmmeter with

the negative lead to the

WHT/YEL terminal, and the

positive lead to the

GRN/WHT (orYEL/BLU)

terminal.
Check that there is no continuity

between the WHT/YEL and the

GRN/WHT (or YEL/BLU) termi-

nals.
• Faulty headlight retractor motor

Raise the headlights halfway

by turning the retractor knob

clockwise.
Check for continuity between the

WHT/YEL and the GRN/WHT1 (or

YEL/BLU) terminals: There

should be continuity.
• Faulty headlight retractor motor

• An open in the wire

Turn the retractor knob

clockwise until the head-

lights are fully raised.
Check for continuity between the

WHT/YEL and the GRN/WHT1 (or

YEL/BLU) terminals: There

should be continuity.
• Faulty headlight retractor motor

• An open in the wire

Headlight retractor switch

OFF (retractable headlight

closed)

Connect an ohmmeter nega-

tive lead to the YEL/WHT

terminal, and the positive

lead to the GRN/WHT' (or

YEL/BLU) terminal.
Check for continuity between

the YEL/WHT and the GRN/

WHT1 (or YEL/BLU) terminals:

There should be continuity.
• Faulty headlight retractor motor

• An open in the wire

Raise the headlights halfway

by turning the retractor knob

clockwise.
Check for continuity between the

YEL/WHT and the GRN/WHT1 (or

YEL/BLU) terminals: There

should be continuity.
• Faulty headlight retractor motor

• An open in the wire

Turn the retractor knob

clockwise until the head-

lights are fully raised.
Check that there is no continuity

between the YEL/WHT and the

GRN/WHT1 (or YEL/BLU) termi-

nals.
• Faulty headlight retractor motor
GRN/WHT1

(YEL/BLU)
WHT/YEL

GRN/WHT1

(YEL/BLU)
YEL/WHTProCarManuals.com

Side Marker/Turn Signal/Hazard Flasher System

Turn Signal/Hazard Relay Input Test

1. Remove the dashboard lower cover. Remove the

turn signal/hazard relay from the left kick panel,

then disconnect the 6P connector.

2. Inspect the connector and socket terminals to be

sure they are all making good contact.

If the terminals are bent, loose or corroded, repair

them as necessary, and recheck the system.

If the terminals look OK, make the following input

tests at the connector.

— If any test indicates a problem, find and cor-

rect the cause, then recheck the system.

— If all the input tests prove OK, the control unit

must be faulty; replace it.
TURN/SIGNAL

HAZARD RELAY

View from

wire side

Terminal
Test condition
Test: Desired result

Possible cause if result is not obtained

E

(BLK)
Under all conditions
Check for continuity to ground:

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

• An open in the wire

B

(RED/WHT)
Under all conditions
Check for voltage to ground:

There should be battery voltage.
• Blown No. 46 (10 A) fuse

• An open in the wire

SR

(BLU/YEL)
Ignition switch ON (II)

and turn signal switch in

right position
Check for voltage to ground:

There should be battery voltage.

SL

(BLU/GRN)
Ignition switch ON and

turn signal switch in left

position
• Blown No. 5 (15 A) fuse

• Faulty turn signal switch or cancel

unit

• An open in the wire

SR

(BLU/YEL)
Hazard warning switch

ON
Check for voltage to ground:

There should be battery voltage.

SL

(BLU/GRN)

LR

(GRN/YEL)
Connect the B terminal

to the LR terminal.
The right turn signal lights should

come on.
• Blown bulb

• Faulty side marker flasher circuit

• Poor ground (G301, G401, G402,

G403, G551)

• An open in the wire

LL

(GRN/BLU)
Connect the B terminal

to the LL terminal.
The left turn signal lights should

come on.
• Blown bulb

• Faulty side marker flasher circuit

• Poor ground (G301, G401, G402,

G403, G551)

• An open in the wire
• Faulty hazard warning switch

• An open in the wireProCarManuals.com

Cancel Unit Input Test

1. Remove the steering column covers. Disconnect the

10P connector from the turn signal cancel unit.

2. Inspect the connector terminals to be sure they are

all making good contact.

If the terminals are bent, loose or corroded, repair

them as necessary, and recheck the system.

If the terminals look OK, make the following input

tests at the connector.

— If any test indicates a problem, find and correct

the cause, then recheck the system.

— If all the input tests prove OK, the control unit

must be faulty; replace it.
10P CONNECTOR
TURN SIGNAL

CANCEL UNIT

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

C10

(BLK)
Under all conditions
Check for continuity to ground:

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

• An open in the wire

C1

(GRY/RED)
Ignition switch on (II)
Check for voltage to ground:

There should be battery voltage.
• Blown No. 5 (15 A) fuse

• An open in the wire

C5

(PUR)
Headlight switch
Check for voltage to ground:

There should be approx. 5 volt.
• Faulty headlight switch or taillight

relay

• An open in the wire

C2

(BRN)
Turn signal switch in

right position

C6

(GRY)
Check for continuity between the C2

and C6 terminals:

There should be continuity.
• Faulty turn signal switch

• An open in the wire

C2

(BRN)
Turn signal switch in left

position

C9

(GRN/BLK)
Check for continuity between the C2

and C9 terminals:

There should be continuity.
• Faulty turn signal switch

• An open in the wire

C3

(ORN)
Under all conditions

C4

(WHT)
Check for continuity between the C3

and C4 terminals:

There should be continuity.
• Faulty cancel solenoid

• An open in the wire

C7

(BLU/YEL)
Connect the C1 terminal

to the C7 terminal, then

turn the ignition switch

ON
(II).
The right turn signal lights should

come on.
• Blown bulb

• Faulty turn signal/hazard relay

• Poor ground (G301, G401, G402,

G403, G551)

• An open in the wire

C8

(BLU/GRN)
Connect the C1 terminal

to the C8 terminal, then

turn the ignition switch

ON
(II).
The left turn signal lights should

come on.
• Blown bulb

• Faulty turn signal/hazard relay

• Poor ground (G301, G401, G402,

G403, G551)

• An open in the wireProCarManuals.com

— Power Antenna Motor Test

1. Open the trunk lid, and remove the side trim panel.

2. Disconnect the 4P connector from the motor, and

check power to the motor at the connector termi-

nals:

There should be battery voltage between the

WHT/BLU (+) and BLK (-) terminals all the time.

There should be battery voltage between the

PNK/WHT (+) and BLK (-) terminals only with

the ignition and radio switched ON.

WHT/BLU BLK

View from wire side

3. Test motor operation:

FULL EXTEND: Connect battery power to the No.

3 and No. 4 terminals and ground

to the No. 2 terminal.

RETRACT: Disconnect power from the No. 3

terminal.
4. If the motor fails to operate properly, replace it.

MAST

ANTENNA

MAST

ANTENNA

LEAD

POWER ANTENNA MOTOR

(With the antenna retracted fully)
GRN/REDProCarManuals.com