no. 25 HONDA CIVIC 1999 6.G Workshop Manual
[x] Cancel search | Manufacturer: HONDA, Model Year: 1999, Model line: CIVIC, Model: HONDA CIVIC 1999 6.GPages: 2189, PDF Size: 69.39 MB
Page 1802 of 2189
Troubleshooting
DTC 9-2
CAUTION: Whenever the ignition switch is ON 0l), ofhas been turned OFF lor lass than three minutes, becareful not to bump the SRS unit; the airbag(s) couldaccidentally deploy lnd caqse damage or iniuries.
Check the tu.c:1. Turn the ignition switch OFF.2. Check for blown No. 23 (10 A) fuse in the under,dashfuse/relay box.
Replace the tuse. Turn the ignition switch ON lll) , and checkthat the fuse doesn't blow.
Th6 problem hs3 disappe.rod, TGt-dJiv€ the vehiclo and3ee Troublerhooting Intermiftcnt Failuro3 on paqo 2l-15.
Check tol short to ground betwe.n tho unde.-da3h fus./r.ley box and the SRS unit.1. Turn the ignition switch OFF.2. Disconnect the baftery negative cable, then disconnectthe positive cable, and waittorthree minutes.3. Disconnect the driver's (and front passenger,s) airbagconnector(s) (see page 24-11).4. Disconnect the SRS main harness 1gp connector fromthe sRs unit.5. Check resistance between the No. 3 terminal of the SRSmarn harness 18P connector and ground,There should be 1 MO or more.
Feufty SRS unh; rcphce the SRS unit lsee pag.2+761.
(A)To page 24-65
To page 24-65
No. 23 lr0 Al FUSEFUSE/RELAY BOX
!
SRS MAIN HARNESS18P CONNECTORSRS UN'T
24-64
I
SRS MAIN HARNESS 18P CONNECTOR
Otf
Page 1803 of 2189
)
FUSE/BELAY BOX
Chcck for an op€n in th6 SRS main harness:
1. Turn the ignition switch OFF.
2. Disconne;t the battery negative cable, then disconnect
the positive cable, and wait for three minutes'
3. Disconnect tho driver's (and front passenger's) airbag
connector (see Page 24'11).
4. Disconnect the SRS main harness 18P connector from
the SRS unit
5. Reconnect the battery positive cable, then reconnect the
neoative cable.
6. Co-nnect a voltmeter betlveen the No 3 terminal ol the
SFS main harness 18P connector and ground'
7. Turn theswitch ON (ll), and m€asure
(cont'd)
(B) from page 24-64
Check tor ahort to ground in the SRS main harn$s:
1. Disconnect the SRS main harness 2P connector from the
under-dash fuse/relaY box.
2. Check resistance between the No. 3 terminal of the SRS
main harness 18P connector and ground There should
be 1.0 M0 or more.
ls the re3istance a3 specified? -
NOYES
Short to giound in tho undot-drlh lut'/rol'y box;
replace the undel-da3h fusgtgEl!9l--------.-
Short to ground in tho SRS m.in harn$s; ropleco the SRS
main harness.
(AlFrom page 24'64
Poor contact at the SRS main harnoss 18P connoctor;
check lho connoctor.. ll the connector k OK, sub3titute r known'good SRS
unh. and recheck. lf the problom is slill present, lepl.ce the SRS main
To page 24-66
SRS MAIN HARNESS18P CONNECTOR
o0
24-65
Page 1804 of 2189
Troubleshooting
DTC 9-2 (cont'dl
2- Disconnect the SRS rnain harness 2p connector lrom theunder-dash fuse/relay box.3- Check resistance between the No. 2 terminal of the SRSmain harness 2P connecior and No. 3 terminal of theSFS main harness 18P connector_
Poor contact at the SRS main ha.ness 2p connector;check the connecto... lf the connector is Ol(, sub3titute a known-good under-dash tuse/r€lay box, and recheck.'lt tho problem is still present, replece the SRS main
Open in the SBS main harness; replace the SRS main har_ness,
SRS MAIN HARNESS2P CONNECTOR
24-66
I
\
From page 24-65
Chock tor an open in th€ SRS main hern€ss:1. Turn the ignition switch OFF.
There should be 0 0.5 0
SRS MAIN
SRS MAIN HARNESS18P CONNECTOR
o!
Page 1819 of 2189
How To Use This Manual
Circuit Schematics
oa
Each schematic represents one circult. A
circuit's wires and components are arranged
to show current flow, from power at the top of
the page, to ground, at the bottom.
Shared Circuits
Other circuits may share power or ground
terminals or wiring with the circuit shown. A
wire that connects one circuit to another, for
example, is cut short and has an arrowhead
at the end of it pointing in the direction of
current flow. Nelit to the anowhead is the
name o{ the circuil or comoonent which
shares that wiring. To quickly check shared
wiring, check the operation of a component it
serves. lf that component works, you know
the shared wiring is OK.
Connectors
All in-line and fuse box connectors are
numbered (C725, C416, etc.).
Component connectors are not numbered
but are identiJied by the name of the
component. lf a componenl has more than
one connector, each connector is assigned
a letter (A, B, C, etc.). Below most connector
numbers and comDonent names are
PHOTO and VIEW numbers. The PHOTO
number refers to a Dhoto in the back of the
book that shows lhe conneclor's location on
the car. The VIEW number refers to an
illustration in the back of the book that
shows the connector face, wire colors,
connector cavity numbers, and other details.
The connector cavity numbering sequence
begins at the top left corner oJ the connector
as seen from either of the viewooints shown
on page ffl . Disregard any numbers
molded into the connector housino.
Wires
Wires are identilied by the abbreviated
names of their colors; the second color rs the
color of the stripe. Wires are also identified by
their location in a connector. The number '2"
next to the male and female wire terminals at
C416, for example, means those terminals
join in cavity 2 of connector C416.
Symbols
A complete description of schematic
symbols begins on page | 8
"HOT" label tells you whenthe ignition switch suppliespower to the fuse. \
Artowhead meanswire connects toanother circuit;
Arrow with note rErngother circuils conncct h€re.
it .a
llu":: ^,{ ii t See Power Distribution, .I t----t oaqe tO-3. IL*--:--------J2 Y C723 Junction connectorYEL I Pao'o'8 more bus bars in it;
I - " " to two or more wire
l,/
-t>?
See PowerDistribution,page 10-3.
UNDER.DASHFUSE/RELAYBOX
has one oleach connactgterminala.
it ooints in directionof current flow.
TheImletor
t_I
Cavity number; L ---
Jiili'iJi!--' -----> '
shoin on page S .
Maleterminal
L?*?l?,-
"'"'I
c725
vlEUt/ 75
Connector number;index begins onpage 203.
Number ot photoin back ol bookshowing componentlocation on cat.
Number ofconneclor viewin back of book
7
GBN/FEO
See Ground
Soe Indicators I ASSEMBLY
:-------J
LOW FUELINDICATOFLIGHT r-l
EI
A
"o'r"/PHOTO 52 <-
\
FUELTANKUNIT
Splice ---------) O rr
".* I Page 14'4'
IBroken wire means | --^ -
iar";J.'It,;,rJ;ii; -----i Bffi,Bili*l
elsewhere. I 0a0e tn-a
IBrK Icround --->lL c301: ptioro 21
Page 2028 of 2189
Power Door Locks (cont'd)
Keyless Receiver Unit Input Test
The following tests are pertormed with A (Main) and B (Keyless) disconnected from the audio unit.
TerminalNo.WireColorTest ConditlonTest: Desired RasultPossible Cause it resull is not obtained
4WHT/BLUUnder all conditionsCheck for vollage to ground:
There should bs batteryvoltage.
aBlown No. 47 (7.5A) tuse in the
under-hood fuss/relay box
An open in the wireo
5YEUREDlgnition switch ACC (l)Check lor voltage to ground:
Th€re should be battery
voltage.
aBlown No. 28 (10A) fuse in the
underdash fusg/relay box
An open in the wirea
TerminalNo.WireColorTest CondiiionTest: Desired ResultPossible Cause if rssult i3 not obtalned
BLU/RED
lgnition key insertedinto the ignition key
switch
Check for voltage to ground:
There should bs 1 V or less.aPoor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Short in the wire
a
a
algnition key r€moved
trom the ignition key
switch
Check lor voltage to ground:
There should be 4 V or more.
3BLUI/ELUnder all conditions
Check for continuity betweenthe audio unit 16P connectorNo- 3 terminal and power doorlock control unit 12P connsctorNo. 6 terminal: There should
be continuity.
I An open in the wire
6BLK/YELlgnition switch ON (ll)Check for voltage to ground:
Thers should be batteryvollage.
. Blown No. 14 (7.5A) fuse in the
under-dash fuse/relay box
. An open in the wire
8LT GRN/BLKCeiljng light switch in"middle position"Connect to ground: The ceilinglight should come on.
aBlown No. 43 (7.5A) fuse in the
undsr-hood fuse/relay box
Blown ceiling light bulb
Faulty ceiling light
An open in the wire
a
a
o
14LT GRN/REDEach door oponed,one at a timeCheck for continuity to ground:
There should be continuity.
aFaulty door switch
An open in lhe wirea
tcBLKUnder all conditionsCheck for continuity to ground:
There should b€ continuity.
aPoor ground (G401, G402)
An open in the wirea
16GRYUnder all conditionsConn€ct to ground:
Horn should sound.
. Blown No.52 (15A) fuse in the
under-hood tuse/relay box
. Faulty horn
. Faulty horn relay
. An open in the wire
130-6
Page 2029 of 2189
![HONDA CIVIC 1999 6.G Workshop Manual \
The following tests are performed with A (Main) reconnected to the audio unit.
B
\
TerminalNo.WireColorTest CondilionTest: Desired ResultPossible Cause it result is not obtained
9GRN/ORN
Drivers do](/img/13/6068/w960_6068-2028.png "HONDA CIVIC 1999 6.G Workshop Manual \
The following tests are performed with A (Main) reconnected to the audio unit.
B
\
TerminalNo.WireColorTest CondilionTest: Desired ResultPossible Cause it result is not obtained
9GRN/ORN
Drivers do")
\
The following tests are performed with A (Main) reconnected to the audio unit.
B
\
TerminalNo.WireColorTest CondilionTest: Desired ResultPossible Cause it result is not obtained
9GRN/ORN
Driver's door lockswitch in UNLOCKCheck tor voltage to ground:There should be l V or less.
o Poor ground (G551)
. Faulty driver's door lock switch
. An open in the wire
. Short in the wire
Driver door lockswitch in LOCKCheck for voltage to ground:
There should be 4 V or more.
10GRN/vvHT
Driver's door lockswitch in UNLOCKCheck for voltage to ground:
There should be 4 V or more.
r Poor ground (G551)
. Faulty driver's door lock switch
o An open in the wire
o Short in the wire
Driver's door lockswitch in LOCKCheck for voltage to ground:
There should be 1 V or less.
\
130-7
Page 2038 of 2189
Power Door Locks (cont'd)
Keyless Door Lock Control Unit Input Test
The following tests are performed with the keyless door lock control unit connector disconnected.
TerminalNo.WireColorTest ConditionTest: Desir€d ResultPossible Cause if result ls not obtain€d
1LT GRN/BLKCeiling light switch in"middle position"Connect to ground: The ceilinglight should come on.
aBlown No. 43 (7.5A) luse in theunder-hood tuse/relay box
Blown ceiling light bulb
Faulty ceiling light
An open in the wire
o
a
a
3BLU/RED
lgnition key insertedinto the ignition keyswitch
Ch€ck lor voltage to ground:There should be I V or less.aPoor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Short in the wire
a
a
o
lgnition key removedlrom the ignition keyswitch
Check for voltage to ground:There should be 4 V or more.
BLfiEtlgnition switch ON (ll)Check lor voltage to ground:
There should be batteryvoltage.
. Blown No. 14 (7.54) fuse in theunder-dash fuse/relay box
. An open in the wire
bREO/BLKHeadlight switch inPARK OT HEAD
Check for voltage to ground:
There should be batteryvoltage.
aBlown No. 32 (7.5A) luse in theunder-dash fuse/relay box
A faulty headlight switch
An open in the wire
a
o
LT GRN/RED
Each door opened,one at a timeCheck lor continuity to ground:
There should be continuitv.
oFaulty door switch
An open in the wireo
15GRYUnder all conditionsConnect to ground:
Horn should sound.
. Blown No. 52 (154) fuse in theunder-hood fuse/relay box
. Faulty horn
. Faulty horn relay
o An open in the wire
BLKUnder all conditionsCheck lor continuity to ground:
There should be continuity.
aPoor ground (G401 , G402)
An open in the wirea
130-16
Page 2057 of 2189
Ir
Security Control Unit Input Test
The following tests are performed with the electrical conneclor disconnected from the security control unit.
\;
12345X67I910
1112131415rol171819202122
TerminalNo.WireColorTest ConditionTest: Desired ResultPossible Cause il result is not obtained
2LT GRN/REDEach door opened,one at a timeCheck for conlinuity to ground:
There should be continuity.
Faulty door switch
An open in the wirea
3BLU/BLKTrunUHatch openCheck for continuity to ground:
There should be continuity.
aFaulty trunldhatch latch switch
An open in the wirea
10WHTUnder all conditionsCheck tor voltage to ground:
There should be batteryvoltage.
. Blown No. 6 (3A) fuse in theunder-hood fuse/relay box(HX, LX, EX, DX-V Si)
. Blown No. 54 (40A) fuse in theunder-hood fuse/relay box (CX, DX)
. Blown (3A) fuse in security in-linefuse holder (CX, DX)
. An open in the wire
11YEL(BLK/YEL
cx, DX)lgnition switch ON (ll)Check for voltage to ground:
There should be batteryvoltage.
. Blown No 3 (10A) fuse in theunder-dash tuse/relay box(HX, LX, EX, DX.V, Si)
. Blown (3A) fuse in the security in-linefuse holder (CX, DX)
. An open in the wire
BLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
aPoor ground (G401, G402)
An open in the wirea
t5BLU/RED
lgnition key insertedinto the ignition keyswitch
Check for voltage to ground:
There should be 1 V or less.aPoor ground (G401, G402)
Faulty ignition key switch
An open in the wire
Short in the wire
a
a
algnition key removedfrom the ignition keyswitch
Check for voltage to ground:
There should be 4 V or more.
18GRYUnder all conditionsConnect to ground:
Horn should sound.
. Blown No.52 (15A) luse in theunder-hood luse/relay box
. Faulty horn
. Faulty horn relay
. An open in the wire
133-15
Page 2058 of 2189
Security System (cont'd)
The following tests are performed with the electrical connector connected to the security control unit.
133-16
TerminalNo.WireColorTest ConditionTest: Desired ResultPossible Cause il result is not obtained
1YEUBLUUnder all conditionsCheck tor voltage to ground:
There should be approximately
5 volts.
aBlown No. 6 (3A) fuse in theunder-dash fuse/relay box
Faulty security control unita
5BLUValet switch pressed
Check tor voltage to ground:
Should change from
approximately 5 volts to less
than 1 volt when valet switch isprsssed.
aFaulty radio ('96-98 models)
or valet switch ('99 models)
An open in the wirea
12ORNUnder all conditionsCheck for voltage to ground:
There should be approximately5 volts.
aBlown No 6 (3A) tuse in tho
under-dash tuse/relay box
Faulty security control unito
14
BLU/WHT(BED
CX, DX)Under all conditions
Check for voltage to ground:
There should be approximately4 volts.
. An open in the wire
. Faulty radio ('96198 models)
or security LED ('99 models)
17RED/WHTSecurity system inPANIC mode
Check for voltage to ground:
Should change from batteryvoltage to less then 1 volt whenin the PANIC mode.
aBlown No. 48 (30A) luse in the
under-hood fuse/relay box
Faulty light flasher relay
Faulty security conlrol unit
An open in the wire
a
a
a
19
REDI/EL(GRN
cx, DX)
Security systemalarm triggered
Check tor voltags to ground:
Should change from batteryvoltage to less then 1 volt whensecurity system alarm istriggsred.
aFaulty security starler cut relay
Faulty security control unit
An open in the wire
I
a
22
BLUA/EL/'oa-'oq
mooelsWHT/BLK)
Under all conditionsCheck tor voltage to ground:
There should be approximately
5 volts.
aBlown No. 6 (3A) fuse in the
under-dash fuse/relay box
Faulty security control unita
Page 2077 of 2189
How the Circuit Works
The two outside mirrors are controlled by the power
mirror switch. Each mirror has two reversible
motors: one motor moves lhe mirror uo and down
and the other motor moves the mirror left and right.
The power mirror switch contains four switches to
control mirror adjustment, and a switch lo select
the left or right mirror. With the ignition ON (ll),
battery voltage is supplied to the power mirror
switch. The mirror selector switch directs voltage
Irom the direction switches to either the left or rioht
mtrror.
Mirror Up
When you press the "up" edge of the mirror
adjustment button, voltage is supplied from one of
the UP switch contacts to both mirrors. With the
mirror select switch in the LEFT or RIGHT Dosition.
ground is provjded for the corresponding up/down
motor through the opposite UP switch contact.
Battery voltage is supplied to the mirror up/down
motor which then tilts the selected mirror uo.
Mirror Down
When you press the "down" edge of the mirror
adjustment button, ground is provided through one
of the DOWN switch contacts to both mirrors.
With the mirror select switch in the LEFT or RIGHT
position, voltage is supplied to the corresponding
up/down motor through the opposite DOWN switch
contact. Battery voltage is supplied to the mirror
up/down motor which then tilts the selected
mtrror down.
Mirror Left
When the mirror select switch is in the LEFT or
RIGHT position, and you press the "lett" edge of the
mirror adjustment button, voltage is supplied to both
corresponding mirror motors through one of the
LEFT switch contacts. Ground is provided for the
corresponding lefvright motor through the opposite
LEFT switch contact, 8attery voltage is supplied to
the mirror left /right motor which then tilts the
selected mirror left.
I,J
141-3
Mirror Right
When the mirror select switch is in the LEFT or
RIGHT position, and you press the '?ight" edge of
the mirror adjustment button, ground is provided to
both corresponding mirror motors through one of
the RIGHT switch contacts. Voltage is supplied to
the corresponding leruright motor through the
opposite RIGHT switch contact. Battery voltage is
supplied to the mirror left /right motor which then
tilts the selected mirror right.
Mirror Detoggers
With the ignition switch in ON (ll), battery voltage is
supplied to the mirror defogger switch. When you
press the mirror defogger switch ON, voltage is
supplied to both mirror defoggers, causing them to
heat up and remove any fog from the mirrors. The
opposite side of each defogger grid is connected to
g rou no.
Refer to the Service Manual (Section 23,
Body Electrical) for specific tests and
troubleshooting procedures.