Page 799 of 1640
Brake Warnin g Syste m
Parking Brak e Switc h Tes t
1. Remov e th e cente r console , an d disconnec t th e con -
necto r fro m th e switch .
2. Chec k continuit y betwee n th e positiv e termina l an d
bod y groun d wit h th e brak e leve r u p an d down .
• Ther e shoul d b e n o continuit y wit h th e brak e leve r
down .
• Ther e shoul d b e continuit y wit h th e brak e leve r
up.
DOW N
BRAK E LEVE R
POSITIV E TERMINA L
BODY GROUN D
NOTE: (Canada )
I f th e parkin g brak e switc h i s OK , bu t th e brak e
warnin g syste m doe s no t work , mak e th e inpu t
test fo r th e daytim e runnin g light s contro l uni t
(see pag e 23-180 ).
Brak e Flui d Leve l Switc h Tes t
1. Remov e th e reservoi r cap . Chec k tha t th e floa t
move s u p an d dow n freely ; i f i t doesn't , replac e th e
reservoi r ca p assembly .
RESERVOI R CA P
FLOAT
Has a built-i nmagne t
Switch contact s close dwhen floa t drops .
Switc h contact s open , a t
prope r flui d level .
2. Chec k fo r continuit y betwee n th e terminal s wit h th e
floa t u p an d down .
There shoul d b e continuit y wit h th e floa t dow n an d
no continuit y wit h th e floa t up ; i f continuit y is incor -
rect, replac e th e reservoi r ca p assembly .
UP POSITIO N
DOWN POSITIO N
UP
ProCarManuals.com
Page 805 of 1640
Safety Indicator
Component Location index
SRS components are located in this area. Review the SRS
component locations, precautions, and procedures in the
SRS section (24) before performing repairs or service.
SAFET
Y
INDICATOR (In the gauge assembly)
Removal, page 23-129 ('93-'96) ('91-'92)
Troubleshooting, page 23-152 ('94-'96) ('91-'93)
Input Test, page 23-150 ('94-'96) ('93) ('91-'92)
CEILING LIGHT
Test, page 23-201
ROOF LOCK SWITCH ( * 1)
Test, page 23-154 ('94-'96) ('91-'93)
PASSENGER'S DOOR SWITCH
Test, page 23-204
HIGH MOUNT BRAKE LIGHT
Test, page 23-211
BRAKE SWITCH
Test, page 23-211
DRIVER'S DOOR SWITCH
Test, page 23-204
ROOF HOLDER SWITCH (* 1)
Test, page 23-155 ('94-'96) ('91-'93)
ENGINE COMPARTMENT LID SWITCH
Test, page 23-325 ('93-'96) ('91-'92)
LEFT BRAKE LIGHT
FAILURE SENSOR
Test, page 23-153
TRUNK LATCH SWITCH
Test, page 23-205
RIGHT BRAKE LIGHT
FAILURE SENSOR
Test, page 23-153
*1: NSX-T (open top) only
Description
Safety Indicator System: LED's are used to indicate when the trunk lid, engine compartment lid, a door, or the roof is not latched, or when a brake
light is faulty, or when the roof is not stored or improperly stored in its holder. The LED's will go on and stay on for about
two seconds after the ignition switch has been turned ON, to show that the system circuit is functioning.
Brake Light Bulb Failure Indicator:
If all brake light bulbs are OK, the indicator light stays off because the ORN/WHT wire is grounded by the two brake light
failure sensors connected in series. With the brake lights off, the ground is provided through the diode, the failure sensor relay coil, and bulb filaments. With the brake light on, all four relays (two in the left sensor, two in the right sensor), con-
nected in series, supply ground. If any of the four bulbs is not working, the chain is broken and the ORN/WHT wire is not
longer grounded. The indicator light comes on.ProCarManuals.com
Page 809 of 1640
Brake Ligh t Failur e Senso r Tes t
1. Firs t mak e sur e th e brak e light s com e o n whe n th e
brak e peda l i s pressed .
• I f al l th e brak e light s com e on , g o t o ste p 2 .
• I f on e o f th e brak e light s doe s no t com e on , chec k
whethe r th e bul b is blown . I f th e bul b is OK , g o
to ste p 2 .
• I f non e of the brak e light s com e on , chec k th e
brak e ligh t circui t.
2 . Ope n th e trun k lid , an d remov e th e tri m pane l tha t
cover s th e righ t taillight . Watc h th e
ligh t i n th e safet y indicato r whe n th e A (WHT/GRN )
wir e o f th e 6- P connecto r i s grounde d an d th e igni -
tion switc h is turne d fro m OF F to O N (II) .
RIGH T FAILUR E SENSO R
6- P CONNECTO R
Vie w fro m wir e sid e
If th e ligh t come s o n an d stay s
on , chec k fo r a n ope n in th e A (WHT/GRN ) wir e
betwee n th e safet y indicato r an d th e righ t failur e
sensor .
If th e ligh t doe s no t sta y on , g o
t o ste p 3 .
3. Watc h th e ligh t a s yo u tur n th e igni -
tion switc h fro m OF F to O N (II) , wit h th e B (GRN )
wire o f th e 6- P connecto r grounde d an d th e brak e
peda l pressed .
If th e ligh t come s o n an d stay s
on, replac e th e righ t failur e sensor .
If th e ligh t doe s no t sta y o n , g o
t o ste p 4 . 4
. Remov e th e rea r tri m pane l tha t cover s th e lef t tail -
light . Watc h th e ligh t a s yo u tur n th e
ignitio n switc h fro m OF F to O N (II) , wit h th e A (GRN )
wire o f th e 6- P connecto r grounde d an d th e brak e
peda l pressed .
LEFT FAILUR E SENSO R
6-P CONNECTO R
View fro m wir e sid e
If th e ligh t come s o n an d stay s
on , ther e is a n ope n in th e A (GRN ) wir e betwee n
th e lef t failur e senso r an d th e righ t failur e sensor .
If th e ligh t doe s no t sta y on , g o
t o ste p 5 .
5. Watc h th e ligh t a s yo u tur n th e igni -
tion switc h fro m OF F to O N (II) , wit h th e B (BLK ) wir e
of th e 6- P connecto r grounde d an d th e brak e peda l
pressed .
• I f th e ligh t come s o n an d stay s
on , replac e th e lef t failur e sensor .
• I f th e ligh t doe s no t sta y on , chec k
fo r a n ope n in th e B (BLK ) wir e betwee n th e lef t
failur e senso r an d ground , an d chec k fo r a poo r
groun d a t G551 .
ProCarManuals.com
Page 848 of 1640
Taillights
Replacement
1. Open the trunk lid, and remove the rear trim panel.
2. Disconnect the 8-P connector and 2-P connector
from the taillight assembly.
3. Disconnect the 2-P connector from the trunk key
cylinder switch.
8-P CONNECTOR
2-P CONNECTOR
TRUNK KEY CYLINDER
CONNECTOR
REAR TRIM PANEL
4. Remove the four mounting nuts and rear panel, then
remove the ten mounting nuts and the taillight as-
sembly.
NEW GASKET
REAR PANEL
TAILLIGHT ASSEMBLY
5. Inspect the gasket; if it is distorted or stays com-
pressed, replace it.
6. After installing, run water over the lights to make
sure they don't leak.
Bulb Replacement
1. Open the trunk lid, and remove the rear trim panel.
2. Turn each socket 45° counterclockwise to remove
them from the taillight housing.
SOCKET
TURN SIGNAL LIGHT BULB (45CP)
and BRAKE LIGHT/TAILLIGHT BULBS (32CP/2CP)
TAILLIGHT BULB (2CP)
BACK-UP LIGHT BULB (32CP)
3. Remove the bulbs from the sockets.ProCarManuals.com
Page 859 of 1640
Brake Lights
Component Location Index
BRAKE SWITCH
Test, page 23-211
HIGH MOUNT BRAKE LIGHT (LED)
LED Replacement, page 23-212
('94-'96) ('91-'93)
Replacement, page 23-212 ('94-'96) ('91-'93) Test, page 23-211
RIGHT TAILLIGHT
Bul
b
Replacement, page 23-196
Failure Sensor Test, page 23-153
LEFT TAILLIGHT Bulb Replacement, page 23-196 Failure Sensor Test, page 23-153
ProCarManuals.com
Page 860 of 1640
(G551) '95-'96 Models.
(G401,G402,G551) '93-94 Models or
Brake Switch
Test
1
.
If one of the brake lights does not go on, check that
brake
light bulb in the taillight or the high mount light
2
.
If none of the brake lights 90 on, check the No. 45 (2
0
A) fuse in the under-hood fuse/relay box.
3
.
If the fuse and bubs are OK, disconnect the 4-P con- necto
r
from the brake switch.
4-P CONNECTOR
BRAKE
SWITCH
BRAKE
PEDAL
4. Check for continuity between the B and C terminals. There should be continuity with the brake pedal
pushed.
If there is no continuity, replace the switch or ad-
just pedal height (see section 19).
If there is continuity, but the brake lights do not
go on, inspect for:
Poor ground (G401,G501) '91-'92 Models or
An open in the WHT/GRN or GRN/WHT wire. Faulty brake light failure sensors (see page 23-153). High Mount Brake Light Test
1. Open the trunk lid and engine compartment lid.
2. Disconnect the 2-P connector from the trunk wire
harness.
TRUNK WIRE HARNESS
SIDE WIRE
HARNESS
View from terminal side
View from
terminal
side
3. Connect a voltmeter positive lead to the GRN/WHT terminal and the negative lead to the BLK terminalof the side wire harness side of the connector.
Push the brake pedal, and check for voltage between
the GRN/WHT and the BLK terminals. There should be battery voltage. If there is no voltage, check for:
— Blown No. 45 (20 A) fuse in the under-hood
fuse/relay box.
— An open in the GRN/WHT or BLK wire.
— Faulty brake switch.
If there is battery voltage, go to step 4.
4. Connect battery power to the GRN/WHT terminal and ground to the BLK terminal of the trunk wireharness side of the connector.
Check that all the LEDs of the high mount brake light
go on.
If the high mount brake light does not go on,check for an open in the wires
in the trunk lid.
If the wires in the trunk lid are OK, replace the
high mount brake light.
If some of the LEDs do not go on,
replace the high
mount brake light assembly.
GRN/WHT BLK
BLK GRN/WHTProCarManuals.com
Page 861 of 1640
Brake Lights
High Mount Brake Light Replacement
CAUTION: Be careful not to damage the high mount
brake light, rear spoiler, and trunk lid.
1. Open the trunk lid.
2. Remove the caps and five screws from the rear
spoiler.
REAR
SPOILER
SCREW
CAP
3. Carefully pull the high mount brake light out of the
rear spoiler, then disconnect the 2-P connector from
the high mount brake light.
REAR SPOILER
2-P CONNECTOR
HIGH MOUNT BRAKE LIGHT
(LED)
Rear Spoiler Replacement
CAUTION: Be careful not to damage the high mount
brake light, rear spoiler, and trunk lid.
1. Open the trunk lid.
2. Remove the six mounting nuts.
REAR
SPOILER
3.
Carefully
lift
the
rear
spoiler assembly
off the
rear
trunk lid.
REAR SPOILER
2-P CONNECTOR (Trunk sub-harness side)
4. Disconnect the 2-P connector from the trunk sub-
harness.ProCarManuals.com
Page 933 of 1640
Cruise Control
Component Location Index
SRS components are located in this area. Review the
SRS component locations, precautions, and procedures
in the SRS section (24) before performing repairs or ser-
vice.
BRAKE SWITCH
Test, page 23-308 ('93-'96) ('91-'92) INDICATOR LIGHT and
DIMMIN
G
CIRCUIT
(In tha gauge assembly)
Bulb Locations, page 23-128
('94-'96) ('91-'93)
MAIN SWITCH
Test, page 23-306 Replacement, page 23-305
SET/RESUME SWITCH
Test, page 23-307 ('93-'96) ('91-'92)
Replacement, page 23-307('93-'96) ('91-'92)
A/T GEAR POSITION
SWITCH
Test, 23-309 ('93-'96) ('91-'92) Replacement, page 23-161 ('93-'96) ('91-'92)
CABLE REEL
Test, page 23-250
Replacement, see section 24
CLUTCH SWITCH (M/T)
Test, page 23-308 ('93-'96) ('91-'92)ProCarManuals.com
