1999 HONDA CIVIC Front seat

Description
)
The sRS is a safety device which, when used in coniunction with the seat belt, is designed to help protect the driver land
front passenger) in a frontal impact exceeding a certain set limit. The system consists of the sRS unit {including safing
sensor and impact sensor), the cable reel, the driver's airbag (and front passenger's airbag)
FRONT PASSENGEB'SAIRAAG
DRIVER'S AIRBAG
CABLE REEL
SRS UNtT
t
Operation
The main circuit in the SRS unit senses and judges the force of impact and, if necessary, ignites the inflator charge(s) lf
battery voltage is too low or power is disconnected due to the impact, the voltage regulator and the back-up power clrcult
resoectivelv will keep voltage at a constant level.
For the SRS to operate:
(1) The impact sensor must activate. and send electric signals to the mlcroprocessor'
(2) The microprocessor must compute the signals' and must send signals to the airbag inflator(s)'
{3) The inflator(s) must ignite and deploy the airbag(s)'
_"-_-l
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Self-diagnosis System
A self-diagnosis circuit is built into the SRS unit; when the ignition switch is turned ON (ll), the SRS indicator light comes
on and goes off after about six seconds if the system is operating normally
lf the liglt does not come on, or does not go off after six seconds, or if it comes on while driving, it indicates an abnormal-
ity in the system. The system must be inspected and repaired as soon as possible
For better serviceability, the memory will store the cause of the malfunctlon, and the data link circuit passes on the infor-
mation from the memory to the data link connector (DLC). This intormation can be read with the Honda PGM Tesler con-
nected to the DLC (16P).
l,
24-5

Contents
How to Use This Manual ICircuit Schematics (see Circuit Index)Fuse/Relaylnformation 6Ground-to-Componentslndex 6-6ComponentLocationPhotooraohs 201Conriector Views 202
Circuit Index
Accessory power socket 155Air conditionerAir delivery'96198 models 61'99-'00 models 61-2Blower controls'96198 models 60'99100 models 60-1Compressor controls 62Fans 63Anti-lock brake system (ABS) 44A/T gear position indicatorCVT 89All except CVT 89-1Automatic transmission controlsAll '96-'98 models except CVT and GX 39All '99100 models except CVT 39-8All GX models 39-8'96-'98 CVT 39-4'99100 cw 39-12Back-up lightsCoupe and Sedan 110Hatchback l'10-1Brake lightsAll Coupes and'96-'98 Sedans 110-15'99-'00 Sedans 110-16Hatchback 110-17Brake system indicator light'96198 models 7'1'99100 models 71-1Ceiling light 114-3Charging system 22Condenser fan 63Console lights 114Cruise control 34Dash lights 114Daytime running lights 110- 13Engine coolant temperature gauge 81-1Fog lights 110-10Front parking lights 110-2Fuel gauge 81-1Fuse/relay boxUnder-dash 6Under-hood 6-4Underhood ABS 6-3Gauges 81Ground distribution 14Ground-to-Componentslndex 6-6Hazard warning lightsAll except '99100 Sedans 110-6'99100 Sedans 110-8Headlights 110-12Headlight switch 100Heater - See Air ConditionerHorn'96197 models 40'98 model 40-1'99100 models 40-2lgnition key reminder 73lgnition systemAll '96198 models except Dl685 20All '99100 models except D16Y5 with Mn 2O-2All D1685 engines 20-2'99-'00 D 16Y5 with M/T 20
lndicators 80Integrated control unit 70lnterlock systemAll except'96J98 CVT 138'96198CVT 138-1License plate lightsAll Coupes and '96-'98 Sedans I l0-3'99100 Sedans 1 10-4Hatchback 110-5Low fuel indicator light 74Moonrool'96197 models |22'98-'00 models 122-1Odometer 81Oil pressure indicator light 80-3Power distributionBattery to ignition switch, fuses, and relaysFuses to relays and components 10-2Power door locksAll models without keyless entry 130'96-'98 models with keyless entry 130-2'99100 models with keyless entry 130-12Power mirrorsWithout detogger 141With defogger '141-2
Power windows 120Programmed fuel injection system (PGNr-Fl)All '96-98 models except D1685 23All '99-'00 models except D16Y5with M/T and D1685 24All D1685 engines 25'99100 D16Y5 with M/T 23Radiator fan 63Rear window defogger'96-,98 models 64'99100 models 64-1Seat belt reminder 73Security system'96.'98 USA HX, LX, EX 133'96-'98 Canada EX, Si 133'99TOO USA HX, LX, EX, DX.V Si 133-4'99100 Canada EX, Si 133-4All CX and DX models 133-8Speedometer 81Starting systemA./T (All except Dl685) 21A"/r (D16Bs) 21-1Manualtransmission 21-2Slereo sound system 150Supplemental rastraint system (SRS) 47Tachometer 81TailliqhtsAllboupes and'96-'98 Sedans 110-3'99100 Sedans 1 10-4Hatchback 110-5Trunk light 114-3Turn signal lightsAll except'99100 Sedans 110-6'99-'00 Sedans 1 10-8Vehicle speed sensor (VSS) 33Wiper/washerFront 91Rear 92
10

Ground Distribution Schematics
This sample Ground Distribution schematic shows all of the components that share two
ground points.
TCSCONTROLUNITPage 35
tl
tl
9Y B
FRONTPASSENGER'SSEAT HEATERPage 147
tl
FRONTPASSENGER'SSEAT BELTSWITCHPage 145
tl
ll
RIGHTREAR DOORASHTRAYLIGHTPage 114
r
\u
tl'T-'
29 3
l'::'"'^I - Ut

Z
II
I
G601c611

Cornponent Location
85. Behind Right Kick Panel\
\
88. Driver's Door
CONNECTOR B ii
86. Behind Right Kick Panel89. Top Front of Driver's Door (Frt. Pass. Similar)
87. Underside of Driver's Seat90. Front of Driver's Door (Frt. Pass. Similar)
201-14
\

103. Below Center of Rear Seat106. Inside of Left Rear Wheel (Right Similar)
104. Left Front Corner of Fuel Tank ('96-'98)107. Underside of Roof
105. lnside of Left Front Wheel (Right Similar)108. Left Underside of Hatch Lid
\
201-17

145. Left Side of Trunk (GX)
Gomponent Location
\148. Below Right Side of Center Console
146. Behind Back Seat (GX)
FUEL TANK PRESSURESENSOR AND FUEL TANKTEMPERATURE SENSOR(rNSrDE)
149. Underside of Vehicle, Left Rear of Engine (Si)
l47.Behind Left Side of Back Seat (GX)150. Right Front of Engine (Si)
201-24

Gonnector Views (cont'd)
67. Integrated Control Unit
- On underdash fuse/relay box
Connector A
- Connects control unit to under-dash fuse/relay box
1 Not used
4 Erake bulb check output
5 lgnition input
6 lgnition input
7 lgnjtion input
Connectol B
- Natural- On main wire harness
l BLU/BLK
{Front wiper/washer)
2 BLUA/VHT(Front wiper/washe0
3 YEUBLU(Front wiper/washer)
4 '98-'00 models:WHT/BLK(Front wiper/washer)
8 Lights ON input
9 Battery input
11 _
13 Start input
14 Ground
7 RED/BLU (Driver's
seat b€lt switch input)
8 LT GRN/RED(Door open input)
I GRN (Oriver's
door switch input)'t0 BLU/RED (Key inignition input)
202-24
68. Stereo Radio Tuner ('96-'98)
- Center ot dash
Connector A
- Gray- On dashboard wire harness
1 RED/GRN(RF speaker +)
2 BLU (LF speaker +)
3 RED/BLK(lllumination control)
4 WHT/BLU(Battery input)
5 YEURED (lgnition input)
6-
7 BLU/YEL(LR speaker +)
8 RED/TEL(RR speaker +)
9 BRN/BLK(RF speaker -)
1O GRY/BLK(LF speaker -)
12 RED(lllumination control)
14 BLK (Ground)
15 GFY,4/VHT(LR speaker -)
16 BRNAVHT(RR speaker -)
Connector B (USA HX, UX, and EX;
Canada EX and Si)
- Green- On dashboard wire harness
l BLU/RED(Key switch input)
2 LT GRN (Not used)
3 BLU/'EL (Drivels
door unlock output)
4 BLU (Security system)
5 LT BLU
{Security system)
6 BLIVYEL (lgnition input)
7 ORN (Security system)
8 LT GRN/BLK(Door open output)
9 GRN/ORN(Unlock/lock output)
1O GRNAVHT(Unlock/lock output)
1 1 BLU/WHT(Security system)
'2 WHT/BLK(Security system)
13 YEUBLU(Security system)
14 LT GRN/RED(Door open input)
15 BLK (Ground)
16 GRY (Horn conkol)

Connector ldentification and Wire Harness Routing
Connector
ol
Terminal
Number of
Cavities/
Color
LocationConnects toNotes\
Floor Wire Harness (Sedan)
c401
c401
c402
c503
c551
trccz
vcco
ucc/
\,CC/
u55b
UCDY
UCOU
c561
lJcoz
ucoz
UCOZ
1'-coJ
lJ50.t
ucoc
ucoo
uco/
ucoo
c569
c570
c571
wJt z
TJC/J
v3/c
14-GRY
2O-GRY
4.ORN
16-GRN
16-GRN
8-GRN
25-GRY
2-NAT
25-GRY
2-NAT
1-WHT
2.GRY
1-WHT
2-ORN
8-GRY
16.GRY
20-GRY
2-BRN
3.BRN
2-BRN
2-OBN
1-WHT
6-GRY
1O-GRY
6-BLU
6.BLU'1-WHT
1.WHT
6-GRN
Behind left kick panel
Behind left kick panel
Behind left kick panel
Below under-dash fuse/relay box
Behind under-dash fuse/relay box
Behind under-dash fuse/relay box
Driver's door
Driver's door
Passenger's door
Passengels door
Below center console
Left side of floor
Right B-pillar
Below left side of rear seat
Left C-pillar
Left C-pillar
Left C-pillar
Left C-pillar
Top of fuel tank
Top ol fuel tank
Below right side of rear seat
Left B-pillar
Top of tuel tank
Left side of dash
Right B-pillar
Left B-pillar
Left quarter panel
Right quarter panel
Behind left side of rear seat
Main wire harness
Main wire harness
Main wire harness
Dashboard wire harness
Under-dash fuse/relay box
Under-dash fuse/relay box
Driver's door wire harness
Driver's door wire harness
Front passengeas door wireharness
Front passenger's door wireharness
Parking brake switch
Driver's seat belt switch
Front passenger's door switch
Left rear ABS wheel sensor
Rear wire harness
Rear wire harness
Rear wire harness
Bear wire harness
Fuel tank unit
Fuel pump
Right rear ABS wheel sensor
Driver's door switch
Fuel tank pressure sensor sub-harness
Power mirror switch
Right rear door wire harness
Lett rear door wire harness
Left rear door switch
Right rear door switch
Fuel sub-harness
-3, GX"4
ABS
"1
'1
ABS
GX
o
-3, GX
except GX
except GX
ABS
except GX
GX
G551
tftcz
Left kick panel
Left side of floor
Body ground, via floor wire hamess
Body ground, via floor wire hamess
.1 : With power windows -3: '96-'98 models except GX.2: Without power windows .4: '99-'00 models except GX
203-30