2000 HONDA CIVIC Ignition system

Troubleshooting
ABS Indicator Light Does Not Come On
YES
NOTE:Reinstallthefuse if it is OK.
The A8S indicator light does not come on when ignition switch is turned ON ll.
NOTE: All indicator tights except the charg,ing system light will not come on when theMETER 17.5 A) ft se is btown.
NO
GAUGE ASSEMBI"Y 5P CONNECTOR
Wire side of female terminals
Tho ABS indicator light does notcome on wh€n ignition switch istu.ned ON {lll.
check the METEB (7.5 A) fuse inthe under-dash fuse/relay box.
Beplace the tu3e and recheck.
Check for an open in th6 lcl cir-cuii:1, Disconnect the gauge assembly 5P connector.2. Turn the ignitjon switch ON l).3. Measure the voltage betweenthe gauge assembly 5P con-nector terminal No. 5 andbody ground.
. Ropair opan in tho wirobotwe€n thc METER t7.5 Attuso and gauge .$cmbly.. Roplacc th. und.r-dash tus./r.l.y box. lop.r cirouit in3idothe box.l
ls there baftery voltage?
Check the ABS indicator lightbulb in the gauge assembly.
ls the bulb OK?
Ch€ck tor a short to power in theWALP circuit:Measure the voltage between thegauge assembly 5P connectorterminal No. I and body ground.
Replir short to power in tho wiiGb.tweon the gruge rs3embly.nd ABS control unh.
ls there battery voltage?
lTo page 19-61)
19-60

Troubleshooting
Central Processing Unit (CPUI
Diagnostic Troublo Code IDTC) 81: CPU Disgnosis
- With the ignition switch ON{lll. ABS indicator light doesnot go oft.- With tho SCS servi@ connec-tor conn€cted lsee page 19{6},DTC 81 is indicated.
P.oblem vedfication:1. Erase the DTC.2. Test-drive the vehicle.3. Make sure that the ABS indi,cator light comes on and DTC81 is indicated.
ls DTC 81 indicated?R€pllc6 th. ABS control unh.
The system k OK rt this time.
19-74

Heater and Air Conditioning
Heater '.'..""" 21'1
Air Conditioning ......."'.. "' 22-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS}
The civic sRs includes a driver's airbag located in the steering wheel hub ln addition, all models (except some
models for canada) have a passenger's airbag located in the dashboard above the glove box'
Information necessary to safely service the sRS is included in this service Manual ltems marked with an asterisk (*)
on the contents page include, or are located near, sRs components. servicing, disassembling or replacing these
items will require special precautions and tools, and should therefore be done by an authorized Honda dealer'
@-";;il rendsring the SRS inoperative, which could lead to personal iniury or deaih in the svent of a sev€re
frontal collision. all SRS service work must be pertormed by an authorized Honda d€aler'
. lmploper service procedures, including incorrest removal and instsllation of the sRs, could lead to personal
iniury caused by unintentional deployment of the airbags'
o Do not bump the SRS unit. Otherwise. the system may fait in case of a collision. or the airbags may deploy
when the ignition switch is ON {ll}'
. sRs electrical wiring harncsses are id€ntified by yellow colol coding. Related components ale located in lhe
steering column, front console, dashboard, dashboald lowet panel, and in the dashboard above the glove box'
Do not use electricaltest equipment on these circuits.

Frcm page 22-14
Check lor an open in the wire:1. Turn the ignition switch OFF.
2. Disconnect the A/C pressure
switch 2P connector.3. Turn th ignition switch ON lll).4. Measure the voltage between
the No. 1 terminal of the AJCpressure switch 2P conneclorand body ground.
Check the A/C pressure switch:1. Turn the ignition switch OFF.
2. Check for continuity between
the No. 1 and No. 2 terminalsof the Ay'C pressure switch.
ls there continuity?
Check for A/C system ptessure.
ls the pressure within sPeci_f cations?Repair the A/C pressure Problem
A/C PRESSURE SWITCH 2P CONNECTOR
ls there battery voltage?
wire side of {emale terminals
A/C PRESSURE SWITCH
Repair open in the wire between
the condenser fan relay tnd the
A/C oressure switch.
1o page 22-16
(cont'd)
22-15

A/C System
CONDENSER FAN RELAY 4P SOCKET
A/C system does not come on
{comDressor and fan).
Check the No. 56 fuse in theunder'hood fuse/relay box andthe No. 17 fuse in the under-dashfuse/relay box.
ReDlace the fus6{s}, and recheck.
Check for tn open in the wire:
1. Remove the condenser lanrelay from the u nderhood
luse/relay box.2. Turn the ignition switch ON {lli.3- Measure the voltage betweenthe No. 4 terminal of the condenser fan relav 4P socketand body ground.
Repair open in the wire between
the No. 17 fuse and the con-denser fan r6lay,
Check the under-hood fus€/r6laybox:Measure the voltage between the
No. 2 terminal of the condenser
fan relay 4P socket and bodyground,
YES
Io page 22-18
(cont'd)

Troubleshooting
A/C System (cont'd)
From page 22-11
. _Ff,, __
I11213[
,r,il*"-T",-.r-'..owrRE I
To page 22-19 1'96 - 98 models)
A/C THERMOSTAT 3P CONNECTOR
Wire side oI female terminals
Check tor an open in the wire:1. Turn the ignition switch OFF.2. Disconnect the A/C thermostat 3P connector.3. Turn the ignition switch ON (ll).
4. Measure the voltage betweenthe No. 3 terminal of the Ay'Cthermostat 3P connector andbody ground.
Repai. open in the wire betweentho No. 17 tuso and the A/C the.-mostat.
Check loi an open in the wi.e:Measure the voltage between theNo. 1 terminal of the A,/C thermostat 3P connector and bodyground,
Ropair open in the wire betwoenthe condedlo. lan rolay and theA/C thormostat.
ls there battery voltage?
Check the A/C th6rmostat:1. Turn the ignition switch OFF.2. Reconnect the A,/C thermostat3P connector.3. Connect the No. 2 terminal toground with a iumperwire.4. Start the engine.
Do the fan run and the com-pressor clutch engage?
To page 22-20 ('99 - 00 models)
22-18

Evaporator
1.
Replacement
4.
Move the temperature control to "HOl"
'96-98: Slide the temoerature control lever.'99-00: Turn the ignition switch ON (ll), then turn
the temperature contol knob. Turn the ignition
switch off.
Remove the battsry.
Rgcover the refrigerant with a rocovery/recycling/
charging station (see page 22-271.
Remove the bolts, then disconnect th6 suction 8nd
receiver lines from th6 evaoorator.
NOTE: Plug or cap the lines imm€diatoly after dis-
connecting them to avoid moisture and dust con-
tamination.
6xl.0mm9.8 n*ln ll.0 tg6m.7.2 lbt frl
RECEiVER UNE
Remove the glov6 box (see section 20).
Removo the self-tapping scr€w and the passeng€r's
dashboard lower cover. Removs the bolt. the nut
8nd the kn€e bolst6r, th6n r6mov6 th6 fiv6 bolts and
the glove box frame.
6.
srrcrrc u E
22-28
7. Disconnect the connector from th€ Ay'C thermostat,
and r€movs the wire harness from the ovaporator.
Remov6 tho four self-tapping screws, tho mounting
bolt and ths mounting nut. Disconnect th€ drain
hose, then remov€ th6 avagorator.
6 x l.0.nm9.8 l$m lt.o ldm, 7.2 bl.tt)
Install in the reverse order of removal. Make note of
th€ following items.
o lf you'r6 installing a new evaporator, add rofriger-
ANt OiI {SANDEN, SP-10 Or DENSO, ND-OIL 8)
lsas page 22-221.
. Replace the O-rings with now ones 8t 68ch titting,
and apply 8 thin coat of r€frlgersd oil before
installing them.
NOTE: Be sure to use the right O-rings for HFC-
134a (R-134a) to avoid loakago.
. Apply s€alant to tha grommets.
. Mske sure that ther€ is no air leakage.
. Chargs ths system {s€€ page 22-161, and tost its
performance (see pags 22-211.

(l'-
Fuse NumberAmpswire ColorComponent(s) or Circuitlsl Protect€d
4180APower distribution
4240AWHT/BLKTo ignition switch (BAT)
437.5 AWHT/REDCeiling light, data link connector, trunk light
4415 AWHT/BLKPGM-Fl main relay
Not used
4640AWHT/BLUPower window motors (via power window relay)
477.5 AWHT/BLUAudio unit, clock, TCM (CVT), ECM/PCM (VBU)
4830AWHTNo.33 (7.5 A) fuse, To combination light switch (headlight)
49Not used
5030AWHT/GRNRear window defogger (via rear window defogger relay)
cl20AWHT/GRNPower door lock control unit, moonroof motor
15 AWHT/GRNHorn system, brake lights, brake signal
10 AWHT/BLKHazard warning light, turn signal/hazard rclay
54404WHT/REDOption {+B)
5540ABLU,A/VHTBlower motor (via blower motor relay)
204WHTCondenser fan motor (via condenser fan relay)
REDl'lc compressor clutch (via IVC compressor clutch relay)
204BLVBEDRadiator fan motor (via radiator fan relay)
23-6