alarm ACURA NSX 1997 Service Repair Manual

Security Alarm System

Control Unit Input Test

Remove the glove box, and disconnect the 22P connec-

tor and 16P connector from the control unit.

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 correct the

cause, then recheck the system.

If all the input tests prove OK, the control unit

must be faulty; replace it.

• Different wires with the same color have been given a

number suffix to distinguish them (for example,

YEL/GRN1 and YEL/GRN2 are not the same).ProCarManuals.com

Security Alarm System

Control Unit Input Test

Remove the glove box, and disconnect the 22P connec-

tor and 16P connector from the control unit.

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 correct the

cause, then recheck the system.

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

be faulty; replace it.

• Different wires with the same color have been given a

number suffix to distinguish them (for example,

YEL/GRN1 and YEL/GRN2 are not the same).ProCarManuals.com

Security Alarm System

Control Unit Input Test (cont'd)ProCarManuals.com

Doors

Disassembly (cont'd)

5. Remove the mounting screws. Lift the door panel

straight up off the sill.

Disconnect the connectors:

• Trunk lid opener

• Power window/Door mirror

• Courtesy light

• Security alarm

DOOR PANEL
CONNECTORS

MOUNTING SCREW

6. Remove the switch panel and air duct from the

door panel as required.

SWITCH PANEL

AIR DUCT

DOOR PANEL
7. Remove the mounting screws and disconnect the

connectors, then remove the power window con-

trol unit and speaker unit.

POWER WINDOW

CONTROL UNIT

CONNECTORS

MOUNTING

SCREW

SPEAKER UNIT

CONNECTOR

8. Remove the lower door weatherstrip retaining

clips, then pull off the lower door weatherstrip.

Remove the screw grommets, and carefully remove

the plastic cover.

Clip locations
Clip locations

LOWER

WEATHERSTRIP
PLASTIC COVER
LOWER

WEATHERSTRIP
LOWER

WEATHERSTRIP

SCREW GROMMETSProCarManuals.com

— If the starter still does not crank the engine,

remove the starter and diagnose its internal

problems.

— If the starter cranks the engine, check for an

open in the BLK/WHT wire and connectors be-

tween the starter and ignition switch. Check the

ignition switch.

On cars with automatic transmission, check the

A/T gear position switch (neutral position

switch) and connector.

On cars with manual transmission, check the

starter cut relay, clutch interlock switch and

connectors.

NOTE: Check the No. 29 (50 A) fuse and the

starter cut relay, and inspect the security alarm

system.

3. Check for wear or damage:

The starter should crank the engine smoothly and

steadily.

If the starter engages, but cranks the engine er-

ratically, remove the starter motor. Inspect the

starter, drive gear and flywheel ring gear for

damage.

Check the drive gear overrunning clutch for binding

or slipping when the armature is rotated with the

drive gear held. Replace the gears if damaged.

4. Check cranking voltage and current draw:

Voltage should be no less than 8.5 volts.

Current should be no more than 350 amperes.

If voltage is too low, or current draw too high,

check for:

Low battery.

Open circuit in starter armature commutator

segments.

Starter armature dragging.

Shorted armature winding.

Excessive drag in engine.
5. Check cranking rpm:

Engine speed during cranking should be above 100

rpm.

If speed is too low, check for:

Loose battery or starter terminals.

Excessively worn starter brushes.

Open circuit in commutator segments.

Dirty or damaged helical spline or drive gear.

Defective drive gear overrunning clutch.

6. Check the starter disengagement:

Depress the clutch pedal all the way (M/T) or shift to

or position (A/T), turn the ignition switch to

"Start (III)", and release to ON (II).

The starter drive gear should disengage from the

flywheel ring gear.

If the drive gear hangs up on the flywheel ring gear,

check:

Solenoid plunger and switch for malfunction.

Drive gear assembly for dirt or damaged over-

running clutch.ProCarManuals.com

Security Alarm System

Control Unit Input Test (cont'd)

Test condition

Test: Desired result
Possible cause if result is not obtained

GRN/BLU

GRN/RED
Driver's door open

Driver's door closed

Passenger's door

open

Passenger's door

closed
Check for continuity to ground:

When the door is open, there

should be continuity.

When the door is closed, there

should be no continuity.
• Faulty right door switch

• An open in the wire

GRN/YEL1
Driver's door key in

UNLOCK
Check for continuity to ground:

There should be continuity.

GRN/YEL2
Passenger's door key in

UNLOCK
• Faulty left or right door key switch

• Poor ground (G401, G402, G403)

• An open in the wire

GRN/WHT
Driver's door key in

LOCK

GRY/WHT
Passenger's door key in

LOCK
Check for continuity to ground:

There should be continuity, as the

door keylock is turned to LOCK.
• Faulty left or right door key switch

• Poor ground (G401, G402, G403)

• An open in the wire

BLU/RED2
Driver's door lock knob

in UNLOCK
Check for continuity to ground:

There should be continuity.
• Faulty left door lock knob switch

(Built into the actuator)

• Poor ground (G401, G402, G403)

• An open in the wire

BLU/RED3
Passenger's door lock

knob in UNLOCK
Check for continuity to ground:

There should be continuity.
• Faulty right door lock knob switch

(Built into the actuator)

• Poor ground (G401, G402, G403)

• An open in the wire

RED/GRN1
Roof unlatched

RED/YEL*1
Check for continuity to ground:

There should be continuity.
• Faulty right or left roof lock switch

• Poor ground (G401, G402, G403)

• An open in the wire

M: NSX-T (open top)
WireProCarManuals.com