2003 HONDA CIVIC Workshop Manual

Battery
{Battery Test
Use either a JCI or Bear ARBST tester, and follow the
manufacturer's procedures. lf Vou don't have one of
these computerized testers, follow this conventional
test procedure:
1. Be sure the temperature of the electrolyte is
between 70'F (21"C) and 100'F (38'C).
2. Inspect the battery case for cracks or leaks.
. lf thecase isdamaged, replacethe battery.l. lf the case looks OK, go to step 3.
3. Check the indicator EYE.
. lf the EYE indicatesthe baftery ischarged, goto
step 4.. lf the EYE indicatesa lowcharge, gotostep7.
4. Apply a 300 amp load for 15 seconds to remove the
surface charge.
5, Wait 15 seconds, then apply a test load of 280 amps
for 15 seconds.
6. Record battery voltage.
. lf voltage is above9.6volts,the battery isOK.l. lf voltage is below9.6volts, gotostepT.
7. Charge the battery on High (40 amps) until theEYE
shows the battery is charged, plus an additional 30
minutes. lf the battery charge is very low, it may be
necessary to bypass the charger's polarity
protection circuitry.
. lf the EYE indicatesthe battery is chargedwithin
3 hours, the battery is OK.l. lf the EYE indicatesthe battery is notcharged
within 3 hours, replace the battery.l
A battery can explode if you do not follow the
proper procedure, causing serious injury to anyone
nearby. Follow all procedures carefully and keep
sparks and open flames away from the battery.
22-50

Relays
Power Relay Test
Use this chan to identify the type of relay, then do the
test listed for it.
NOTE: Turn signal/hazard relay input test (see page 22-
87).
RelayTest
A'lC comoressor clutch relavNormally-open
type AAirlfuel ratio sensor relav
Condenser fan relay
Headlioht relav 1
Headliqht relav 2
Horn relav
Power window relay
Radiator Ian relay
Reverse relav
Starter cut relav
Tailliqht relaV
Daytime running lights relay
{Canada )
PGM-FI main relav 1
PGM-Fl main relav 2
Blower motor relavNormally-open
tvpe BRear window defoqoer relav
Moonroof close relayFive terminal
typeMoonroof oDen relav
Low beam cut relav {Canada)
Normally-open type A:
Check for continuitv between the terminals.
. There should be continuity between the No. 1 and
No,2 terminals when power and ground are
connected to the No. 3 and No. 4 terminals.. There should be no continuity between the No. 1 and
No.2 terminals when power is disconnected.
type 1:
type 2:
PGM-FI main relay 1
PGM-FI main relay 2
type 1:
type 2:
(cont'd)
22-51

Relays
Power Relay Test (confdl
Normally-open type B:
Check for continuity between the terminals.
. There should be continuity between the No. 1 and
No. 3 terminals when power and ground are
connected to the No. 2 and No. 4 terminals.' There should be no continuity between the No, 'l and
No. 3 terminals when power is disconnected.
Blower motor relay
type 1:
type 2;
tF-gr
tJ 1l
Rear window defonn* *O,
6:)
rc*V
.r{{
n,\
(Ft)
s3.
22-52
Five-terminal type
Check for continuity between the terminals.
. There should be continuity between the No. 1 and
No.2 terminals when power and ground are
connected to the No. 3 and No. 5 terminals.. There should be continuity between the No. 1 and
No. 4 terminals when power is disconnected.
type 1:
type 2:
\

lgnition Switch
Test
SRS components are located in this area. Review the
SRS component locations (see page 23-13) andprecautions and procedures {see page 23-'l4) in the SRS
section before performing repairs or service.
1, Remove the driver's dashboard lower cover {seepage 20-59).
2. Disconnect the 5P connector from the under-dash
fuse/relay box.
WHT/RED
Wire side offemale terminals
BLK/WHTBLK/YEL
BLK/RED
Check for continuity between the terminals in each
switch position according to the table.
Terminal
p.J,i""-\
WHT/RED(ACC)
BLK/WHT YEL(BAT) flGl)
BLK/REDtrc2t
BLK/WHT(sr)
o (LocK)
| (ACC)o---o
[ (oN)
III (START)
c)-_H
o_H
lf the continuity checks do not agree with the table,
replace the steering lock assembly (see page'17-121.
22-53

Gauges
\-Component Location Index
PARKING BRAKE SWITCHpage 19-10
FUEL GAUGE SENDINGpage 11-156ENGINE OIL PRESSURE SWITCHpage 8-4
GAUGE ASSEMBLYSelJ-diaqnostic Procedure, page 22-56Gauqe dulb Replacement, page 22 63Rep6cement, page 22-64Coolant Temperature GaugeTroLrbleshooting, page 22'64
BRAKE FLUID LEVEL SWITCHpage 19-10VEHICLE SPEED SENSOR {VSS)Troubleshooting, page 22-65Beplacement, page 22-67
22-54
\

CONNECTOR A(bluelCONNECTOR BlgreenJ
SPEEDOMETERVehicle Speed Signal CircuitTroubleshooting, page 22-65
TACHOMETEB
FUEL GAUGETest, page 11-156
\7
t----/ \
i.._-
_/\
ODO/TRIP METER
22-55

Gauges
Self-diagnostic Procedure
The gauge assembly has a self-diagnosis function.. The Beeper Drive Circuit Check. The Indicator Drive Circuit ChecL. The LCD Segments Check. The Gauges Drive Circuit Check (Speedometer, Tachometer, Fuel gauge, Coolant temperature gauge). The Communication Line Check (the coolanttemperature signal line between the gauge and ECM)
NOTE: Indicators are also controlled via the communication line.
Entering the self-diagnosis f unction:
Before doing the self-diagnosis function, check the No. 9 (10A) fuse in the under-hood fuse/relay box and No. 10 {7.5A)fuse in the under'dash fuse/relay box.
1. Push and hold the trip/reset button.
2. Turn the lighting switch ON.
3. Turn the ignition switch ON (ll).
4. Within 5 sec., turn the lighting switch OFF, then ON and OFF again.5. Within 5 sec., release the trip/reset button, then push and release the button four times reDeatedlv.
NOTE:. While in the self-diagnosis mode, the dash lights brightness controller operates normally.'Whileintheself-diagnosismode,thetrip/resetbuttonisusedtostartthebeeperdrivecircuitcheckandthegauge
drive cicuit check.. lf the vehicle speed exceeds 1.2 mph 12 km/h) orthe ignition switch is tu rned OFF, the self,diag nosis mode ends.
oN flrl
lgnition
Switch
Lighting
Switch
Trip/Reset
Switch-> Move to selt-diagnosis mode.
5 sec.5 sec.
The Beeper Drive Circuit Check:
When entering the self-diagnosis mode, the beeper sounds five times
The Indicator Drive Circuit Check:
When entering the self-diagnosis mode, the following indicators blink.
Seat belt indicator, Door/hatch indicator, Brake system, Lowfuel indicator, Maintenance required indicator (USA),
Washer fluid level indicator (Canada), Oil pressure light.
v
OFF
22-56

\
The LCD Segment Check:
When entering the self-diagnosis mode, the odo/trip segment blinks five times.
The Gauge Drive Circuit Check:
When entering the self-diagnosis mode, the speedometer, the tachometer, the fuel gauge, and the coolant
temperature gauge needles sweep from the minimum position to maximum position, then return to the minimum
posrtron.
NOTE: After the beeper stops sounding and the needles return to the minimum position, pushing the trip/reset button
starts the beeper drive circuit check (one beep) and the gauge drive circuit check again.
The check cannot be started untilthe needles return to the minimum position.
Self-diagnosismode
Trip/Resetswitch
ON
OFF
ON r-r r-r r-r .-1 r-r r-r
;; lll u u l_l L__l I l-l
5 sec
Faulty:
The needles sweep from theminimum position to themaximum position, then returnto the minimum position-
Normal:
iD
tli-
flOi-
Ending the self-diagnosis function:
Turn the ignition switch OFF.
NOTEr lf the vehicle speed exceeds 1.2 mph {2 km/h), the self diagnosis fu nction ends.
:-l!:!!JlJ!J
,-
t,-- - ,- r- i-
| | | ttfi- r-
9l- r n =--llJL--oFF _---
cause needles Xl" f---U---------l [-----l
Beeper
The Communication Line Check:
In the self-diagnosis mode, after the odo/trip LCD segments check, the self-diagnosis starts the communication line
cnecK.
lf all segments comes on, the communication line is OK.
lf the word "Error" is indicated, there is a malfunction in the communication line between the gauge assembly. the
multiDlex control unit. and the ECM.
@,
22-57