main relay HONDA INTEGRA 1998 4.G Repair Manual

Cruise Control
- Control Unit InputTest(cont'dl
IBLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
. Poor ground (G20l, G401). An open in the wire
2BLK/YEL
lgnition switch ON {ll}Check for voltage to ground:
There should be battery voltage.
. Blown No. l4 (7.5 Alfuse in the
under-dash fuse/relay box. An open in the wire
3LT GRNlgnition switch ON (ll)
and main switch ON
Check for voltage to ground:
There should be battery voltage.
. Faulty main swjtch. An open in the wire
GRY
lgnition switch ON (ll),
main switch ON and
brake pedal pushed,
then released
Check for voltage to ground:
There should be O V with the
pedal pushed and battery
voltage with the pedal released.
. Faulty brake switch. An open in the wire
5GRN/WHT
Brake pedal pushed,
then released
Check for voltage to ground:
There should be battery voltage
with the pedal pushed, and 0 V
with the pedal released.
Blown No. 52 (20 A)fuse in the
under-hood fuse/relay box
Faulty brake switch
An open in the wire
6RED/BLU
lgnition switch ON (ll)Connect to ground: lndicator
light in the gauge assembly
comes on.
Blown bulb
Blown No. 25 (7.5 A)fuse in the
under-dash fuse/relay box
Faulty dimming circuit in the gauge
assembly
An open in the wire
7LT GRN/
BLK
RESUME button
pushed
Check tor voltage to ground:
There should be battery voltage.
Faulty SET/RESUME switch
Faulty cable reel
An open in the wire8LT GRN/
RED
SET button pushed
IPNK
MT/: Clutch pedal
released
A/Tr Shift lever in [2l,
[Dl]. o, [o'l
-
Check for continuity to ground:
There should be continuity.
NOTE: There should be no con-
tinuity when the clutch pedal is
depressed or when the shift
lever is in other positions.
Faulty or misadjusted clutch switch(M/T)
Faulty A/T gear position switch(A/T)
Poor ground (G201,G401)
An open in the wire
't0BLUStart the engine.Check lor voltage to ground:
There should be voltage.
. Faulty ignition system or ECM. An open in the wire
't1ORN
lgnition switch ON (ll)
and main switch ON;
raase the front of the
car, rotate one wheel
slowly.
Check for voltage between the
ORN @ and BLK O terminals:
There should be 0- about
5 V-O- about 5 V repeatedly.
. Faulty vehicle speed sensor {VSS). An open in the wire
BRN/WHTConnect battery power
to the BRN/WHT
terminal and ground to
the BRN/BLK terminal.
Check the sound of the actuator
motor: You should hear the mo-
tor running smoothly.
. Faulty actuator. An open in the wire
BRNi BLK
Connect battery power
to the BRN/RED
Iermrnal.
Check the operation of the mag-
netic clutch: Clutch should click
and output link should be locked.
Faulty actuator
An open in the wire
Poor ground (G30'l)
No. Wire Test conditionTest: Desiled result Possible cause il lesult is not obtained
' 4 I BRN/RED
{
{
23-258
-L

!
Gomponent/Wiring Locations Index
SRS INDICATOR LIGHT(ln the gauge assembly)Troubleshooting, page 23-287Gauge assembly, page 23-126
To HORN SWITCH
CABLE REELReplacement,page 23-322
DRIVER'S AIRBAGReplacement. page 23-317Disposal, page 23-320To DRIVER'S AIRBAG
DASHBOARD WIRE HARNESSFRONT PASSENGER'SAIRBAGBeplacement, page 23-317Disposal, page 23-320
to SRS INDICATOR LIGHT in GAUGE ASSEMBLY5P CONNECTOR
SRS MAIN HARNESSTo MAINWIRE HARNESS3P CONNECTOR
SRS MAINHARNESSto UNDER-DASHFUSE/RELAYBOX2P CONNECTOR
HARNESSto FRONT PASSENGERS AIRBAG2P CONNECTOR
SRS MAIN
SERVICE CHECXCONNECTOR {2PIIBRNAAIHT, BLK]to CABLE REEL2P CONNECTOR
MAIN WIRE HARNESSto DASHBOARD WIREHARNESS16P CONNECTOR
ERASE SIGNAL (MES}SRS UNITGBOUNOSRS MAIN HARNESSSRS UNIT(lncluding safing sensorano rmpact sensor)R6placement, page 23-326
2P CONNECTORSRS MAIN HARNESSto SRS UNIT18P CONNECTOR
S\--0
[GRN, GRNI or IWHT, BLKI
23-27A

Description
I
J)
)
'\' '\, ili \.-.-1 i^\\,,; i \
The SRS is a safetv device which, when used in coniunction with the seat belt, is designed to help protect the driver and
front passenger in a frontal impact exceeding a cenain set limit. The system consists ot the SRS unit (including safing sen-
sor and imDact sensor), the cable reel, the driver's airbag, and front passenger's airbag
Operation t'Its
The main circuit in the SRS unit senses and judges the force ot impact and, il necessary, ignites the inflator charges. If bat-
tery voltage is too low or power is disconnected due to the impact, the back-up power circuii will keep voltage at a con-
stant level.
For the SRS to operate:
(1) The impact sensor and safing sensor must activate and send electric signals to lhe mictop.Goi
{2) The microprocessor must compute the signals and send signals to the airbag inflators'
(3) The inflators must ignite and deploy the airbags sE Lr.r
UNDER DASHFUSE/RELAYBOX
Dnftr sAtacranroq
IIMPACT I ] )
F80t{TPASSEI{GEffSAIRSAGINFLAIOR
Drc MES SCS rDC
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 light 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 servicesbility. the memory will store the cause of the malfunction, and the data link circuit passes on the infor-
mation from the memory to the data link connector (DLC). This information can be read with the Honda PGM Tester con-
nected to the DLc (16P).
23-279
J

Circuit Diagram
FRONTPASSENGEF'SAJRBAGINFLATOR
f\4r
tlGRN GRN(YEL) (BLi.,'YEL)
I
G701
IGNITIONswtTcH
SRS INOICATOF CIBCUIT(ln the gauge assembly)
8LU
I
I
siEi'
IGRN
GRN(8RN)
I?
RNAVHT BRII/WHTlltl\---7 \*7
ECM SERVICECHECKcoirNEcTon
WHT/BLK +WHT
t"'
DATA LINKCONNECTOF(DLC)(r6P)
UNDEF-DASHFUSURELAY80x
ELKRED
J
PGM-FImain r€lay
MEIiIORY ERASEr2pt SIGNAL (MESIcoNNECToR (2P)
SRS UNIT TERMJNALS
BLX
G201G401
-NOER.NOOD FUSE/RELAY BOX
SRS INDICATORLIGHT 0.4W)
10 14 1 13 6 7(VA) 3(VB)SRS UNIT16 17 15 9188
DRIVER'SAJFBAGINFLATOR
1367I
10,/1,/1314151718
lerminal sde o{ male tefinnals
23-280
\'

Troubleshooting
SRS Indicator Light Wire Connections
SRS Indicator Light Power Circuit
To UNDER-DASHFUSE/RELAY BOX2OP CONNECTOB
SRS Indicator Light Control Circuit
To SBS UNIT
iI
SRS MAIN HABNESS
C55'1, C557 : WIRE SIDE OF FEMALE TERMINALS
DASHBOARD WIRE HARNESS
MAIN WIRE HARNESS
C557 -+ To GAUGE ASSEMBLY
CiP7, C449 : TERMINAL SIDE OF MALE TERMINALSC553, CEo1. C802, C804: WIBE SIDE OF FEMALE TEFMINALS
DASHBOAND WIREHARNESS
To UNOEF-DASHFUSE/RELAY BOX2P CONNECTOR
C427 : MAIN WIRE HARNESS 3P CONNECTORC/r49 : MAIN WIBE HARNESS 16P CONNECTORC551 : DASHSOARD WIRE HARNESS 2Op CONNECTORC553 : DASHBOARD WIFE HARNESS t6P CONNECTORCssT : OASHBOARD WlnE HABNESS SP CONNECTOB
To GAUGE ASSEMBLY
C801 : SRS MAIN HARNESS 2P CONNECTOBC802 : SRS MAIN HARNESS 3P CONNECTORC804: SRS MAIN HAFNESS 18P CONNECTOR
BLU

Troubleshooting
The SRS Indicator Light Doesnt Go Off
CAUTIOi{: Whenever the ignition switch is ON (ll). or
h.s bGGn turned OFF for less than three minutes. be
crrclul noi to bump the SRS unit; the airbags could
lcci{tcntrlly deploy and cause damage or iniuries.
(A)
1o page 23-297
Try to reproduce the SRS indic.tor l;ght;l. Erase the DTC memory (see page 23-289).2. Turn the ignition switch ON (ll), and check that the SRSandicator light comes on lor about six seconds and thenooes off,
Ooes the SRS indicetor light stay on?
NOYES
Intermittc t failu.e, sydem is OK dt this time. Sec Troublo-shooting lntermitteirt Failuros on p.qe 23-28!1.
Check tho No. 23 {10 A) fuse:1. Turn the ignition switch OFF-2. Check for blown No. 23 110 A) fuse in the unde.dashfuse/relay box.
ls the luse OK?
YESNO
Roplsce the f!se, and eresc the memory1. Replace the No. 23 (10 Alfuse.2. Erase the DTC memory (see page 23-289).3. Turn the ignition switch ON (ll).
Does th6 SRS indicator light go off after rix socond6?
I YEs No
I
ENO
Contilm the DTC, and continuo troubleshooting.
Check tor an open in ths SRS main hlrna3r (VB tinc):1- Disconnect the battery negative cable. thon disconnectthe positive cable, and wait tor three mrnures.2. Disconnect the driver's and front passenger's airbag con-nector (see page 23 285).3. Disconnect the SRS main harness 18P connector fromthe SRS unit.a. Reconnect the battery positive cable, then reconnect thenegative cable.5. Connect a voltmeter between the No. 3 terminal (+) otthe SRS main harness 18P connector and ground.6. Turn the ignition switch ON {ll).
ls th.re bettery vohaqe?
YES
Open in th. SRS msin h.rness (VB linc); roptrca tha
NO
No.23110 Al FUSEUNOER.DASHFUSE/RELAY AOX
SRS UNIT
SRS MAIN HARI{ESS 18P COI{I{ECTOR

Fuse/Relay Information
- Under-dash Fuse/Relay Box
Front Viewt4
c55't(To dashboard wire harness)
c661(To root wire harness)
c801Oo SFIS main harness)c922(To ignition switch)
c440{To rrain wire harness)
c441(To main wire harness)
c442flo rra n wire harness)
c92sOo power window relay)
c928(Not used)
Rear View
c504(To rear wire harness)
c503. : Spare fuser : Not UsedO : Option (+B)
O : Option (Dash lights)O : Option (ACC)
O : Option (lG2)c439(To main wire harness)
6
-) n Fl r"r r'r rl r-l r-r ri r'1 Tl rl r-1. 23 24 25 26 27 2a 29 30 31 32 33t_-.1 u u ! tJ LJ Ll t. Ll tJ l. tJ
- r-l n T'l T-l r't T-1 T-t r-l T-t r-l r'1.12 13 14 15 16 17 18 19 2A 21 22LI tJ LJ LI tJ I.J t-J tJ IJ IJ IJ I.J
r-r Tl l;t T'l T-l T'1 rn r-l T-t r'l T1 Tl r'1 n. 1 2 3 4 5 6 7 I 9 10 11 . .t-l LJ LJ LJ LJ [J t-t LJ Ll LJ t_l t-J Lr u
(To rear wire harness)

Fuse
NumberFuse NameAmpsPagecomponent or circuit Protected
(POWER
DOOR LOCK)
(RR WIPER
RR WASHER)
R _ HEAD LIGHT
HIGH BEAM
j 1o-2Power door lock control unit
10-2 | Rear wiper
I
tto-e i onLcontrol unit (Canada), Right headlight
L _ HEAD LIGHT
HIGH BEAM
(POWER WINDOW
RR-L)
i 1 10-8i DRL control unit (Canada), High beam indicator light,
i Left headlight
1 0-1Not used
| 1zo-z
I
I Left rear window motor
| (lGN colL)| 15
(POWER WINDOW
FR-R)
(POWEB WINDOW
FR-L)
I Right rear window molor
I
Front passenger's window motol
Driver's window motor
| 120-2
i120 (H/B)
iot 120-2
l(Sedan)
i120 (H/B)
l0:120 ?
IJ13
TURN LIGHTS
FUEL PUMP
(SRS UNIT)
(Sedan)
'lo-2Hazard warning switch
1O-2 | PGM-FI main relay, SRS unit
I
14I (cRUlsE coNTRoL) | 7.510-3 | Cruise control
ALTERNATOR
SP SENSOR
7.510-3Alternator, ECM or PCM ('00 Model), ELD unit,
Gauge assembly, PGM-Fl, TCM ('98-'99 Modelwith A/f),
Vehicle speed sensor
i REAR DEFBOSTER ii RELAY i
10-6i ABS control unit, Rear window defogger
I HEATER A/C
: RELAY
fuC compressor controls, Air delivery, Blower controls,
Fans. Power mirrors
I tnururutruc ucxr I z.s
I otrt av I
I DRL control unit (Canada)10-6
I BACK UP LIGHTS | 7.s | 10-4 I Back-up lights
t
(RUNNTNG LTGHTS) ii DRL control unit (Canada)
(cont'd)
19
6-1

FuserRelay I nformation
- Under-dash Fuse/Relay Box (cont'd)
Fuse
Number
i R - HEAD LTGHT ii LOWBEAM i
Fuse NameAmpsPageComponent or Clrcull Protected
10 ii Right headlight
! L _ HEAD LIGHT I
I row eenu I
10 i110-8Left headlight
(sRs)I roSRS unit
24 I P/IV RELAY IPower window relav. Moonroof
l(suNRooFBELA!l
7.5 I 10-4 |
tl
25 | METER | 7.5 | 10-5 |
rttl
Clock, Gauge assembly, Integrated control unit, Interlock
system, Maintenance reminder unit
Front wiper/washer26 i FR W|PER
I FR WASHEB
27 | crcnnerre
i LTGHTER
28 i RApro i10 i
Cigarette lighter
10-s iStereo radio/cassette player
30 I INSTRUMENT
I LIGHTS
2e | (RR Foc LtcHT) | z.s !
| 7.5 |
tl
3'1 i STARTER STGNAL21,21-1 1
32 i LTCENSE LtcHrS Ii TAIL LIGHTS ii 1001 i
| (rNrER LocK uNrr)l
II
114 | Dash & console lights, Integrated control unit
ECM or PCM, Integrated control unit, PGM-FI main relay
License plate lights, Parking lights, Taillights
Interlock system
6-2

- Under-hood Fuse/Relay Box
Front View
T102Oo engine wire harness)
*: Not Used
Rear View
c2l5To main wire harness
T1[ro battery)
c905[ro F/Ccompressor)clutch relay)
c2t8[fo main wire harness)Oo main
(cont'd)
D3
tr
tr
[J
r'1
IJ
r-t
IJ
r'151
LI
r-156
IJ
r"l57
LI
Llowire harness)
6-3