1997 HONDA CIVIC Diffe

Rear Brake Disc
Disc Runout Inspection
1.Loosen the front wheel nuts slightly, then raise thevehicle, and suppon it on safety stands. Removethe front wheels.
Remove the brake pads (see page 19-24).
Inspect the disc surface for damage and cracks.Clean the disc thoaoughly, and remove a

rust.
Use wheel nuts and suitable plain washers to holdthe disc securely against the hub. then mount a dialindicator as shown. and measure the runout at10 mm (0.4 in) from the outer edge of the disc.
Brake Disc Runout:
Service Limit:0.10 mm {0.00,t in)
5. lf the disc is beyond the service limit, refinish thebrake disc,
Max. Retinishing Limit: 8.0 mm {0.31 in)
NOTE: A new disc should be refinished if its runoutis greater than 0.10 mm (0.004 in).
19-26
Disc Thickness and Parallelism
Inspection
1. Loosen the front wheel nuts slightly, then raise thevehicle, and support it on safety stands. Removethe front wh6els.
2. Remove the brake pads (see page j9-24).
3. Using a micrometer. measure disc thickness aterght points, approximately 45" apart and 1o mm{0.4 in) in from the outer edge of the disc. Replacethe brake disc if the smallest measurement is lessthan the max. refinishing limit.
Brake Disc Thickness:
Standard: 8.9 - 9.1 mm (0.350 - 0.358 in)Max. Rsfinishing Limit: 8.0 mm {0.31 in}
Brake Disc Parallelirm: 0.015 mm(0.0006 inl msx.
NOTE; This is the maximum allowable differencebetween the thickness measurements.
4. lf the disc is beyond the service limit for Darallelism.refinish the brake disc.
NOTE; See section 18 for brake disc replacement.

Body ('99 model)
Dashboard
Center Panel Removal and
lnstallation
Bumpers
Front Grille Removal and
lnstallation
Front Air Spoiler Replacement ."'.....
Seats
Front Seat DisassemblY and
ReassemblY 20-138
Front Seat Torsion Bar
Replacement '.'...".'....'... 20-139
Emblems
tnstallation 20-140
20-136
20-136
20-137
Outline of '99 Model Changes
The center Danel removal and installation procedures are different'
The front grille removal and installation procedures are different'
The front air spoiler has been added for some models of 2D'
A height-adjustable driver's seat was added to some models'
Emblems were added for some models ot 2D'

Body {'00 model}
Seat Belts
Child Seat Anchor Plate Removal/
f nstallation 20-142
Emblem
f nstallation 20-144
Outline of '00 Model Changes
The child seat anchor plate removal and installation procedures are different'
An emblem was added for some model of 3D.

Troubleshooting
J
J
B. The SRS indicator light can also indicate the DTC by the number of blinks when the SCS service connector is connect-ed to the service check connector (2P).
1. Turn the ignition switch OFF, and wait for ten seconds. Then connect the SCS service connector to the service checkconnector (2P). lf you do not wait ten seconds, the SRS unit will not be completely reset and will not output DTCS.
SERVICE CHECKCONNECTOR {2PIIGRY, GRYI or IGRN, cRN]SCS SERVICE CONNECTOR07PAZ - (m10100
l.-zs
2. Turn the ignition switch ON (ll). The SRS indicator light comes on for about six seconds and goes off. Then it will indi,cate the DTC:- The DTC consists of a main code and a sub-code.- Including the most recent problem, up to three different malfunctions can be indicated.- In case of a continuous failure, the DTC will be indicated repeatedly (see example 1 below).- In case of an intermittent failure, the SRS indicator light will indicate the DTC one time, then it will stay on (see exam-ple 2 below).
lf both a continuous and an intermittent failure occur, both DTCS will be indicated as continuous failures.- In case the system is normal (no DTC), the SRS indicator light will stay on (see example 3).3. Read the DTC.
4. Turn the ignition switch OFF, and wait for ten seconds. Then disconnect the SCS service connector from the servicecheck connector (2P).
Examples of DTC Indications:
1. Continuous fallure, SRS Indicator Light isl
- Main @de
DTC21Mosr raenr probtsm
Intermittent failure, SRS lndicator Light is:
-lF- rM.in code ir) Sub.code (2)
DTCI2
-'l F --l FMarn code (11 Sub code t1t
DTCl1Thnd.most recenl
Lrghr srays on rn ca* ol
r --
2.
3. No
ON
sutb chek __.1penod
24-14
rmal (no failure), SRS
DTC5l
Indicator Light is:
rl
No OTC, system is norhal, rhe

Troubleshooting
SRS Unit ldentification
+: On '98 - 00 models, the troubleshooting procedures are different for each type of SRS unit. ldentifv the SRS unit in thevehicle using the chart below, then follow the proper flowchan in the following pages.
'98 - 00 Model SRS units
MAKERIDENTIFICATION
MARK*Remark
NECM1Driver's airbag only
M1Driver's & Passenger's airbags
KEIHINM2Driver's & Passenger's airbags
SIEMENSM3Driver's & Passenger's airbags
'96 - 97 Model SRS units
LABEL IIDENTIFICATION MARK)
MAKERPARTS NUMBERRemark
NEC77960-S04-C81Driver's airbag only
77960-S04-N81Driver's & Passenger's airbags
TAKATA77960-S04-N82Driver's & Passenger's airbags
SIEMENS77960-S02-A81Driver's & Passenger's airbags,'97 Model only
24-16
lr

How To Use This Manual
Symbols
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Wire Color Abbreviations
The following abbreviations are used to
identify wire colors in the circuit schematics:
BLK.... .........b|ack
BLU.... ......... blue
BRN.... ,....... brown
GRN.... ........ green
GRY.... ......,.. gray
LTBLU . .....lightbtue
LTGRN. ....lightgreen
ORN.... ....... orange
PNK .... .......,.. pink
PUR .... ........ purple
RED .... .......... red
WHT... .........white
YEL .... ........ yellow
A broken line means this part of the circuit
is not shown; refer to the circuit listed for
the complete schematic.
"ral
o
-.1
See GroundDistribution,page 141.
I G101
Where separate wires
join, only the splice is
shown; for details on
the additional wiring,
refer to the circuits
listed.ili::i
{[
UNDER-OASHFUSE/RELAYBOX
Wires
A wavy line at the end of
a wire means lhe wire is
broken by the binding of
the book or by a "choice"
bracket but continues on
the next page.
Wire insulation can be
one color, or one color
with another color stripe.
(The second color is
the stripe.)
This circuit continues on
another page. (The arrow
shows direction o{ current
flow.) To tollow the RED/
BLK wire in this example,
you would turn to page 23-5
and look for the "2" anow.
This means the branch of the
wire connects to another
circuit. The arrow Doints to the
name of the circuit branch
where the wire continues.
8LK-Cruise Control, €aaaGauges, Indrcalors
!YEUsLK
Ttl
Wire choices for options or
different models are labeled
and shown with a "choice"
bracket like this.
This broken line means
both terminals are in
connector C134.
a.
+##l:i""lManuallransmission
ryil;::,
.""1
""'
"""1".'0
I
""^l
:-lName of Circuit

In the "OHMS" range, the DVOM will measure
resistance between two points along a circuit.
Low resistance means good continuity.
Diodes and solid-state devices in a circuit can
make a DVOM give a false reading. To check
a reading, reverse the leads, and take a
second reading. lf the readings differ, the
component is affecting lhe measurement.
Jumper Wire
Use a jumper wire to bypass an open circuit.
A iumper wire is made up ot an in-line fuse
holder connected to a set of test leads. lt
should have a five amoere fuse. Never
connect a jumper wire across a short circuit.
The direct battery short will blow the fuse.
Short Finder (Short Circuit Locater)
Short finders are available to locale shorts to
ground. The short tinder creates a pulsing
magnetic field in the shorted circuit whlch you
can follow to the location of the short. lts use
is explained on page 15.
SHORT FINDER
To ordei any test equipment shown above,
contact your local tool supplier. For a list of
suppliers and tool numbers, refer to Honda
Required Special Tools and Equipment
Service Bulletin.
How To Use This Manual
Test Equipment (cont'd)
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Troubleshooting Precautions
Before Troubleshooting
1. Check the main fuse and the fuse box.
2. Check the battery for damage, state of
charge, and clean and tight connections.
CAUTION:
. Do not quick-charge a battery unlers
the battery ground cable has been
disconnected, or you will damage the
alternator diodes.
. Do not attempt to crank the engine wlth
the ground cable disconnected or you
will severely damage the wiring.
While You're Working
1. Make sure connectors are clean, and have
no loose terminals or receptacles.
2. Make sure lhat connectors without wire
seals are packed with dielectric (silicone)
grease. Part Number: 08798-9001 .
Pack wllh dlelectrlc (sillcons) greass
When connecting a connector, push it until it"clicks" into place.
Do not pull on the wires when
disconnecting a connector. Pull
only on the connector houslngs.
Most circuits Include solid-state
devlces. Test the voltages In these
circuits only with a lo-megaohm or
higher impedance digital multlm6ter.
Never use a test light or analog meter
on chcuits that contain solld-state
devices. Damage to the devices
may result.
oo

How To Use This Manual
Troubleshooting Tests
Testing for Voltage Drop
Wires, connectors, and switches are designed
to conduct current wilh a minimum loss of
voltage. A voltage drop of more than one volt
indicates a Droblem.
'1. Place the digital volVohmmeter (DVOM) in
the appropriate DC volts range. Connect
the positive lead to the end of the wire
(or to the connector or switch) closest to
the bafterv.
Connect the negative lead to the other
end of the wire (or the other side of the
connector or switch).
Turn on the components in the circuit.
The DVOM will show the difference
in voltage between the two points. A
difference, or drop, of more than one
volt indicates a oroblem. Check the
circuit for loose, dirty, or bent terminals.
co
Testing lor a Short with a Test Light or DVOM
1. Remove the blown fuse and disconnect
the load.
2. Connect a test light or digital
oltr'ohmmeter
(DVOM), switched to the appropnare DC
volts range, across the tuse lerminals to
make sure voltage is present. You might
have to turn the ignition switch to ON:
check the schematic to see.
<-s80RT TOGFOUNO
Disconnecl lheload here.
Beginning near the luse box, wiggle the
harness. Continue this at convenient ooints
about six inches apart while watching the
test light or DVOM.
Where the test light goes off, or the DVOM
voltage drops to zero, there is a short to
ground in the wiring near that point.
NOTE: Always use a DVOM on high
impedance circuits. A test light may not
glow (even with battery voltage present).
3''
ffito.'"o'o
.t.
TEST LIGHTolDVOM