radiator HONDA CIVIC 1996 6.G Manual PDF

Heater Unit
Replacement
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-
L Disconnect the negative cable from the battery.
2. Frcm under the hood, open the clamp, then discon-
nect the heater valve cable from the heater valve
arm. Turn the heater valve arm to the fully opened
position as shown.
When the engine is cool. drain the engine coolant
from the radiator (see section 10).
!@ Do not remove the radiator cap when
the engine is hot; the ongine coolant is under pres'
surg and could severely scald you.
CLAMP
HEATER VALVC CABLE
4. Disconnect the heater hoses from the heater unit.
CAUTION: Engine coolant will damage p8int.
Ouickly rinse any spilled engins coolant from painted
su aces,
NOTE: Engine coolant will run out when the hoses
are disconnected; drain it into a clean drip pan.
5. Remove the mounting nut from the heater unit.
NOTE: When removing the mounting nut, take care
not to damage or bend the fuel lines, the brake
lines, etc.
I x 1 .25 mm22 N.m {2.2 kgl.m, 16lblftl
21-39

Relay and Control Unit Locations
Engine Compartment
UNDER.HOOD ABS
FUSE/RELAY BOX
CONDENSER FAN
RELAY
UNDER.HOODFUSE/RELAY BOX
MOTORRELAY
A/C COMPRESSORCLUTCH RELAY
RADIATORFAN RELAY
ELD UNIT
t:
tr
tr
uI Il I tl I
23-7

Connector ldentification and WireHarness Routing
Engine Compartment Wire Harness
conneqtor of
Terminal
Number of
CavitiesLocationConnects toNotes
c201
c202
c202
c203
c204
c205
c206
c207
c208
c209
c210
c210
c211
c212
c213
c214
c215
10
6
2
2
2
1
3
2
1
2
8
Left side of engine companment
Left side of engine companment
Left side of engine companment
Left side of engine compartment
Behind front bumper
Behind front bumper
Left side of engine compartment
Behind front bumper
Left side of engine compartment
Left side of engine companment
Behind front bumper
Behind front bumper
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Right side of engine compartment
Behind front bumper
Main wire harness (C308)
Main wire harness (C309)
Main wire harness {C309)Cruise actuator
Windshield washer motor
Rear window washer motor
Left front turn signal/parking lightFront fog light
Left headlight
Ay'C wire harness 1C751)Horn
HOrn
Radiator fan motor
Right headlight
Right front turn signal/parking lightMain wire harness (C355)
Washer level switch
Optional
'96 - 97
models'98 - 99
models
Canada'99 model
G201
G202
Right side of engine compartment
Left side of engine compartment
Body ground, via engine compartmentwire harness
Body ground, via engine compartmentwrre harness*1r With cruise control*2: Without cruise control
23-2A

(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

Power Distribution
Circuit ldentification (conf dl
ECI4/PCM (Via A/C Fsssure switch)
,VC th€modA
Con(,ensef lan molor
A/C comFessor dulci
ECWPCM
UNDER HOOD FUSE/BELAY BOX
"*-f_
v{HT -
BLI(/RED -
UNDEN.DASH FUSE/REIAY BOXflo page 23-72)
COMBINATION LIGHT SWITCH[Io page 23 73, 74)
UNDER,DASH FUSgRELAY BOXOo page 23'74)
wnc'N ---}> Hlgl;%,s,1 lsu'r"' *,
wHT/GnN-Po#sr door lock control unilMoonrool molor
*HT/RED + Hoo5f;oA'.j1fu,uttto" *t
BLUMHT - Blowor fiolor
G()1G402
BLu/rrit{t -
BLU/lf {I -
23-68
BLI(RED - Radiator tan molor

Normally-opsn tYPe:
1. Check for continuity between the terminals
. There should be continuity between the No. 1 and
No. 2 terminals when power and ground are con-
nected to the No. 3 and No 4terminals.
o There should be no continuity between the No 1
and No.2 terminals when power is disconnected'
Terminal
Power iNo.3 - No,4) \
I2
Disconnected
Connectedoo
a
a
a
Power window relaY
Radiator fan relaY
Condenser fan relaY
A/C compressor clutch relaY
Starter cut relay: '98 - 00 models
Horn relay: '98 - 00 models
Five-ierminal type:
1. Check for continuitv between the terminals.
. There should be continuity betlveen the No. 1 and
No. 2 terminals when power and ground are con-
nected to the No. 3 and No 5terminals.
. There should be continuity between the No 2 and
No. 4 terminals when power is disconnected'
--1
I
II
t
Moonroof open relay: '96 - 97 models
Moonroof close relay: '96 - 97 models
(cont'd)
23-87
Terminal
Power (No. 3 - No. 5)\
4
Disconnectedo--o
Connectedo--o

-lgnition Timing Inspection and Setting
1.Check the idle speed, and adjust it it necessary (see
section 'l '1 ).
Pull out the service check connector 2P (BRN and BLK
wires) from the connector holder located under the
dash on the front passenger side, then connect the
SCS service connector (T/N 07PAZ - 0010'100) to it.
Start the engine. Hold the engine at 3.000 rpm with
no load {A,/T in E or E. M/T in neutral) until the
radiator fan comes on, then let it idle.
Connect the timing light to the No. 1 ignition wire,
then point the light toward the pointer on the timing
belt cover.
Check the ignition timing in no load conditions:
headlights. blower fan, rear window defogger, and
air conditioner are not operating.
lgnhion Timing:
D15Y5. D16Y7, Dl6Yg engines
816A2 engine
MIT16" 12' BTDC (RED) during idling in
neutral
M/T12't 2" BTDC (RED) during idling in
neutral
l2'r 2" BTDC {RED) during idling in S
orE
POINTEB
RED MARK
23-105
ro ADVANCE -<;,
6. Adjust the ignition timing if necessary, as follows.
Loosen the distributor mounting bolts. and turn the
distributor ignition (Dl) housing counterclockwise to
advance the timing, or clockwise to retard the tim-
ing.
MOUNTING BOLTS18 N'm (1.8 kgfm, 13lblftl
Tighten the distributor mounting bolts, and recheck
the ignition timing.
Disconnect the SCS service connector from the ser-
vice check connector.
7.

Charging System
Troubleshooting (cont'd)
Alt6rnator/Regulator Test
NOTE: Make sure the baftery is sufficiently charged (see page 23-9j).
FIELDSELECTOR
LOAD AOJUSTER{CARAON PILEI
FULL FIELOTESTERLEAD IBLUI
VOLTMETERNEGATIVELEAD IBLKI
VOLTMETERPOStTtVELEAD (REDI
NEGATIVE TESTERCABLE IBLKI
POSITIVE TESTERCABLE IREDI
TEST SELECTORswrTcH
INDUCTIVEPICK-UP
IGRNI
INDUCNVEPICK.UP
TIVETEBMINAL
Alte.nator/Regulator Test'1 :L Connect a Sun VAT 40 (orequivalent tester), and tu rnthe selector sw;tch to position1(staning).2. Shift to neutral (A/T in E orE) position, and start theengine. Hold the engine at3,000 rpm with no load untilthe radiator fan comes on,then let it idle.3. Raise the engine speed to2,000 rpm, and hold it there.
ls the voltage over 15.1 V?
Alternalor/Regulator Te3t-2:1. Release the accelerator pedal,and let the engine idle.2. Make sure all accessories areturned ofi. Turn the selectorswitch to position 2 (charging).3. Bemove the inductive pick-up,and zero the ammeter,4. Place the inductive pick-upover the battery ground cableso that the arrow points to thebattery negatlve terminal.5. Raise the engine speed to2,000 rpm, and hold it there.
ls the voltage less than 13.5 V?
Alternator/Regulator Test-3:Apply a load with a VAT-40 untilthe battery voltage drops tobetween 12 - 13.5 V.
tffil rCI
[ @lBt* . ,*n 'aHrl
L-;-;l rs-
23-11A
To next page

Fan Controls
Component Location Index
UNDER.HOOO
CONDENSER FAN RELAYTest, page 23-87
RADIATOR FAN RELAYTest, page 23 87
CONDENSERFAN MOTOR
TOR FAN MOTORRemoval, section 10
ENGINE COOLANTTEMPERATURE (ECTI
swtTcHRemoval, section 10Test, section l0
t lt lt lt tt l
tlTtlnr-l
mU!L-Jfl_l'1 - f-t t-_l -
I L--J L__J LJ f-----"1
o
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23-126

Cruise Control
t
D=
t
Astuator Replacement
1.Pull back the boot, and loosen the locknut. Then dis-
connect the cable from the bracket.
Disconnect the cable end from the actuator rod.
Disconnect the 4P connector from the actuator.
Disconnect the vacuum hosa from the vacuum tank.Pull out the vent hose.
Remove the three mounting bolts and the actuator
with the bracket.
CABTI aP CONNECTOR
lf necessary, disconnect the cable end from the link-age over the accelerator pedal, then turn the grom-
met 90' in the bulkhead, and remove the cable,
Install in the revers€ order of removal, and adjust
free play at the actuator rod after connecting thecable (see ne)d column).
7.
VACUUM HOSE
23-244
1.
Actuator Cable Adjustment
Check that the actuator cable operates smoothlywith no binding or sticking.
Stan the engine. Hold the engine at 3,000 rpm withno load (Afl'in N or E, M/T in neutral) untit theradiator fan comes on, then let it idle.
Measure the amount of movement of the actuato.rod until the cable pulls on the accelerator lever(engine speed starts to increase). Free Dlay shouldbe 11 t 1.0 mm (0.43 I 0.04 in).
LOCKNUT FREE PLAY: 11 1 1.0 mm
{o.i|:l r 0.oit in}
lf free play is not within specs, loosen the locknut,
and turn the adjusting nut as required.
NOTE: lf necessary. check the throttle cable freeplay (see section 11). then recheck the actuator rodfree play.
Retighten the locknut, and recheck the free play.
ACTUATOR ROD