1997 HONDA CIVIC Under hood fuse

Interlock System
Control Unit Input Test
1. Disconnect the 8P connector from the interlock con-trol unit.
2. Inspect the connector and socket terminals to besure they are all making good contact.. lf the terminals are bent, loose or corroded, repairthem as necessary, and recheck the system.. lf the terminals look OK, make the followinginput tests at the connector.- lf a test indicates a problem, find and correctthe cause, then recheck the system.- lf all the input tests prove OK, substitute aknown-good control unit, and recheck the sys-tem. lf the check is OK, the control unit mustbe faulty; replace it.
NOTE: lf the shift lock solenoid clicks when theignition switch is turned ON {ll) and you step on thebrake pedal (with the shift lever in E), the shift locksystem is electronically normal; if the shift leve.cannot be shifted from E], test the Aff gear position
switch, park pin switch, and see section 14.
Key Interlock System:
CavityWireTest condition
Reconnect the 8P connector to the interlock control unit.
Shift Lock System:
Cavity WifsTest condition
INTERLOCKCONTROL UNIT
Test: Desired result
Test: Dgsired result
Wire side offemale terminals
Possible cause if result is not obtained
Possible cause if result is not obtained
WHT/BLU
lgnition switch turned toACC (lland key pushed inCheck for voltage to groundiThere should be baftery voltage.Blown No. 48 (30 A) fuse in the underhood fuse/relay boxBlown No. 33 (7.5 A) fuse in the underdash fuse/relay boxFaulty steering lock assemblylkey interlock solenoid)An open in the wire
5WHT
BLKUnder all conditionsCheck for continuity to ground:There should be continuity.
' Poor ground (G401, G402). An open in the wire
6BLK./BLUShift lever in ElCheck for continu;ty to ground:There should be continuity.Poor ground (G401, G402)Faulty Ay'T gear position switchAn open in the wire
2YELlgnition switch ON lll)Check for voltage to ground:There should be banery voltage.
. Blown No. 25 (7.5 A) fuse in the under,dash fuse/relay box. An open in the wire
3YEUBLK
lgnition swirch ON (ll)Check for voltage to ground:There should be baftery voltage.Blown No. 25 (7.5 A) fuse in the under-dash fuse/relay boxFaulty shift lock solenoidAn open in the wire
6BLI(BLUShift lever in ICheck for voltage to ground:There should be 1 V or less.Poor ground (G401, G402)Faulty A,/T gear position switchAn open in the wire
7WHT/RED
lgnition switch ON lll)Brake pedaldepressedCheck for voltage to ground:There should be 1 V or less.Blown No. 52 (15 A) Iuse in the underhood fuse/relay boxFaulty PCMFaulty brake switch (see section 1l)Faulty throttle position {TP) sensor(see section 1'l )An open in the wire
lgnition switch ON (ll)Brake pedalandaccelerator depressed atthe same time
Check for voltage to ground:There sho(Jld be battery voltage.
23-146

A/T Gear Position Indicator
UNDER.DASHFI.JSE/FELAY BOXIGNITIONswrrcH
Circuit Diagram
CW:
UNDER HOOD FUSE/RELAY BOX
6; |-;,,'r&l \o3o'75A
rr,/-TPLK+r,,'rirac coJ-aL("E1.<\c-t]
---
IY. PCM"
:i3M)''
V
ILT GRN
TqM 'l
f7v
tlYEL GFN
8LK
G401G442
*1 : 96'98 modeis+2 i '99t0 models
No 30 {7.5A)
V
IRED/BLK
t,
||l
| ,k sfi0f, |Itg)coNsotEl
I Y i1?ri I
tll
t'RED
I
I
vDASI| L GHTSERIGHTNESSCONTNOLLER
l./TGEAR POSITION INDICAToR (h lhe gauge assembty)
YYYY
A/TGEARPostTtoNswrTcH
A'/T GEAB POSITION NDICATOR OIMMING C]RCUIT
23-150

All Systems:
Cavity Wire
Cavity Wire
Intelmittent Wiper System:
Test condilion
Test condition
Test: Desired resultPossible cause il rgsull is not obtained
Test: Desired resultPossible cause if result is not obtained
Al4BLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
. Poor ground (G401, G402). An open in the wire
A9
Under all conditionsCheck for voltage to ground:
There should be battery voltage.
. Blown No. 43 (7.5 A) fuse in the
under-hood fuse/relay box
. An open in the wire
A6
lgnition switch ON (ll)Check for voltage to ground:
There should be baftery voltage.
. Blown No. 25 (7.5 A) fuse in the
under-dash fuse/relay box. An open in the wire
B1
82
BLU/BLK
and
BLU,^/VHT
lgnition switch ON (ll),
and windshield wiper
switch at OFF or INT
Check for continuity between the
BLU/BLK and BLU/WHT terminals:
There should be continujty.
Blown No. 26 {20 A) fuse in the
under-dash fuse/relay box
Faulty windshield wiper switch
Faulty windshield wiper motor
An open in the wire
B3YEUBLU
lgnition switch ON (ll),
and windshield wiper
switch at INT
Check for voltage to ground:
There should be battery voltage.
Blown No.26 (20 A) fuse in the
under-dash fuse/relay box
Faulty windshield wiper switch
An open in the wire
*A5lgnition switch ON (ll)Check tor voltage to ground:
There should be battery voltage.
. Blown No.26 (20 A) fuse in the
under-dash fuse/relay box. An open in the wire
WHT/BLK
lgnition switch ON { ll),
and windshield washer
switch ON
Check for voltage to ground:
There should be battery voltage.
. Faulty windshield washer switch
. An open in the wire
*: With combined wiper'washer operatlon
{-(cont'd)

Circuit Diagram (USA)
l|-
RED/BLK
II
I
\?
PABK NG LIGHTSTA LL GHTSL CENSE PLATE L GHTS
RED/ELK
III
I
r'
DASH LIGHTSDASH LIGHTSERIGHTNESSCONTROLLER
HIGH BEAMIND CATORLIGHT(r 4w)
REDiGRN
I
BLK
I
G401G4A2
UNDER,HOOD FUSEi NELAY 8OX
'------ --.-r ----.'r
-T
I" T,,: i.. T
o
UNDER DASH FUSE/RELAY 8OX
No5(104)No.4004)No 30(7.5A)
I)N0.32A {7.5A)
I
No 22(r0A)
AT
lilffl (
II
BLK
I
G201
8LK
I
:
G202
23-163

Lighting System
Circuit Diagram (Canada)
UNDER.HOOD FUSEi RELAY BOXBATTERY
BFAKE SYSTEMLIGHTNTEGRATEDCONTROL UNIT
f-7
I
IFED/GRN
REDiGFN
II
o
Yro*, ,,r'oI LEVEL SW TCH
t |
lclosed : Floal downl
BLK
I
-L..
G401G402
T
.:
BLK
n:
G40lG402
BLK
I
G201
RED/GRN RED/GBN
| .+_
ttL
| | las*,
| \_i-f
Alr
Y,o" r.o" I
liiqff'- |BLK BLK
tl
dT--
G401 G202G402
l\------tr -1
d,$,E" T d
RED/BLU RED/REDiGEN
UNDEF DASH FUSE/RELAY BOX
I
)) N0.20tl0Al)'
No.1g(7.5A)No.50 0A)
, ll-l
llltti /i[ii i,II
ll
llri, zll",ll iu"x
TT
FEDiGRN R€D
tl
!-tl--l
ttuLj
il]-
YEL REDTWHT FED/BLU FED/8LK RED/ BLK
tt++
IIVV| | .DASF L.GHTS . oAB(^rG -TGHTSI I .DAS-LGH'S.TALL'GCTS
| | 33''9+il4[','o L.ENSEoLATELTG'TS
I l-,ro,u,rffl,
^-^^-.*^,{*"'"0-
tlI qsnlq,rr DAYT'ME qUNNINGLIGHTS FES STOF
nd--f)
irt* | | Trt* Iorr Itt I---J \---J-------J
-rGHr
lt*"','
I
I
YEL/BLK
DAYTIMERUNNING LIGHTSCONTROL UNIT
RED/GHN R
I
5
[i.mi:-",,,

Lighting System
Daytime Running Lights Control Unit Input Test (Canadal
2.
3.
LRemove the driver's dashboard lower cover and
knee bolster (see section 20).
Disconnect the connectors from the daytime run-
ning lights control unit.
Inspect the connector and socket terminals to be
sure they are all making good contact.
lf the terminals are bent, loose or corroded. repair
them as necessary, and recheck the system.
lf the terminals look OK, make the following
input tests at the connector,- lf any test indicates a problem, find and correct
the cause, then recheck the system.- lf all the input tests prove OK, the control unit
must be faulty; replace it.
CavityWireTGst conditionTest: Desired resultPossible cause it result is not obtained
BLKU nderall conditionsCheck for continuity to g.ound:
There should be continuity.
. Poor ground (G401, G402). An open in the wire
A2BLK /VHT
Underall conditionsCheck for voltage to ground:
There should be battery voltage.
Blown No.20 (10 A) fuse in the
under-dash fuse/relay box
An open in the wire
etYEUBLK
lgnition switch ON (ll)Check for voitage to ground:
There should be battery voltage.
Blown No. 18 {7.5 A) fuse in the
under-dash luse/relay box
Faulty ignition switch
An open in the wire
A4RED
Combination light
switch in " =D " posi-
UOn
Check for voltage to ground:
There should be battery voltage.
Blown No. 48 (30 A) tuse in the
under-hood fuse/relay box
Faulty combination light switch
An open in the wire
A1WHT/RED
Combination light
switch OFF; connect ajumper wire between
the YEUBLK and
WHT/RED terminals,
then turn the ignition
switch ON (ll)
Headlights (high beam) should
come on, (and high beam
indicator should come on).
. Poor ground (G201, G202, G40'1,
G402). Blown bulbs. Faulty daytime running lights
resrstor. An open in the wire
GRN/RED
lgnition switch ON (ll),
brake fluid reservoir
full, and parking brake
lever down
Connect to ground: The brake
system light should come on.
Blown No.25 (7.5 A) fuse in the
under-dash f use/relay box
Blown brake system light
An open in the wire
REDiGRNParking brake lever LrpCheck for continuity to groundl
There should be continuity.
. Faulty parking brake switch. An open in the wire
23-166

Turn SignallHazard Flasher System
UNOER.DASHFUSE/RELAY 80X
No.12l7 5A)
Gircuit Diagram
UNDER.HOOD FUSE/RELAY 8OX
IJ
l*v
,'|,."J,-(NOt
GRN/YEL
t,
I'RED
I
I
I
II
J
DASH LJGIlTSBRIGHTNESSCONTROLLER
q
BLK

Turn SignallHazard Flasher System
1.
Turn Signal/Hazard Relay Input Test
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.
Remove the turn signal/hazard relay from the under-
dash fuse/relay box.
Inspect the relay and fuse/relay box socket terminals
to be sure they are all making good contact.
. lf the terminals are bent, loose or corroded,
repair them as necessary, and recheck the system.
. lf the terminals look OK, make the following
input tests at the fuse/relay box socket.- lf any test indicates a problem, find and cor-
rect the cause, then recheck the system.- lf all the input tests prove OK, the turn signal/
hazard relay must be faulty; replace it.
Test: Desired results
FUSE/RELAY BOXSOCKET
Possible cause it result is not obtainedCavityTest condition
8Bffii
\_t-E rl.]l
| - lll
n'rl
,.ff T-'t:
Hazard warning switch
ON; connect the No. 1
terminal to the No.3
rermtnat.
Hazard lights should come on.Poor ground \G201, G202, G401,
G402, Gs51, G552, G601, G761)
Faulty hazard warning switch
An open in the wire
lgnition switch ON (ll) and
turn signal switch in right
or left; connect the No. 1
terminal to the No. 3
terminal.
Right or left turn signal lights should
come on.
. Faulty turn signal switch
2Under allconditionsCheck for continuity to ground:
There should be continuity.
. Poor ground (G401, G402). An open in the wire
3
lgnition switch ON (ll)Connect for voltage to ground:
There should be battery voltage.
Blown No. '12 (7.5 A) fuse in the
under-dash fuse/relay box
Faulty hazard warning switch
An open in the wire
Hazard warning switch ONConnect for voltage to ground:
There should be battery voltage.
Blown No. 53 (10 A) fuse in the under-
hood fuse/relay box
Faulty hazard warning switch
An open in the wire
23-174