heater HONDA INTEGRA 1998 4.G Owner's Guide

II
JFrom page 21- 14
ls the mode control motor OK?
YES
NO
To page 21-16
View from wire side
BLU/WHT
GRNTYEL
(cont'dl
Check for continuily in the BLKwire between the mode controlmolor and body ground.
Check tor an oDen in the BLK wireb€twe€n the mode control motorand body ground. lf the wiro isOK, check for poor ground atG201 and G401.
Test the mode conlrol motor (seepage 21-281.
Remove the mode control motor(see page 21-28).
Remove the heater control panel
lsee page 21-25).Check the mode control linkageand doors for smooth movement,
Disconnect the heater controlpanel 14P connector.Ropair the modo contrcllinkag€ or doors.Do the mode control linkageand doors move smoothly?
Check each wire for continuity be-tween the mode control motorand body ground.. YEL/BLU wire. YEL wire. BLU/WHT wire. GRN/YEL wire' YEL/RED wire
ReDlace the mode conlrol molor.
Ropaii any short in the wiiolslbe-tw6€n the mod€ control motorand th€ heater control oan6l,
Check the same wires for voltaoe,
Ropair sho.t to power in theBLK/YEL wir€ betweon the mod€controlmotor and the hottor con-trol panel. (This damagos thgheater control oanel.)
ls there any voltage?
,.i:...
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21-15

Troubleshooting
Mode Control Motor (cont'd)
From page 21-15
View lrom wire side
No. 2 YEL
No. 1 BLU,4 THTNo. 3 YEL/BLU
No. 7
No. I GRN/YEL
Check each wire for continuity be-tween the mode control motorand the hoater control panel.. YEL/BLU wire. YEL wire. BLUMHT wire. GRN/YEL wire. YEL/RED wire
R6pair any open in th€ wirels) be-tween the modo control motoiand the heater control oan€|.
Replace the hsatar control panol.
View from wire side yEL
,,'; -(('
1iu'.'''.. 1
,,...:N.V
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21-16

Troubleshooting
Recirculation Control Motor (cont'dl
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From page 21-17
Remove the recirculation controlmotor (see page 21 291.
Check the recirculation controllinkage and door for smooth
Remove the heater control panel(see page 21-25).Do the recirculationcontrol linkage and doormove smoothly?
Rspair the recirculationcontrol linkagg o. door.
Disconnect the heater controlpanel 14P connector.
Check for continuity in theGRN/WHT and GRN/RED wiresbetween the recirculation controlmotor and bodv ground.
Reoair short in the GRN/WHTand/or GRN/REO wire(s) betweentho recirculation control motorand the heaioi control Dan6l.
Check the same wires for voltage.
Repair short to power in thoBLK/YEL wire between the recir-culation control motor and theheater control oanel. lThisdamages the heater controlDan€|.)
ls there 6ny voltage?
Check for continuity in theGRN/WHT and GRN/RED wiresbetween the recirculation controlmotor and the heater controlpanel.
Bepair open in the GRN/WHTand/or GRN/RED wirelsl betw6enthe recirculation control motorand the heator control Dan€|.
Replace the h6alor control panel.
Test the recarculation control mo-tor (see page 21 2g).
ls the recirculation controlmotor OK?
No. 5 GRN/RED
View from wire side
21-18

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Heater Control Panel Input/Output Signals
No.Wire ColorSignalNo.Wile ColorSignal
BLU/WHTHEATINPUT8GRN/YELHEAT/VENTINPUT
2YELHEATiDEFINPUTqRED/BLKCOMBINATION LIGHT SWICHINPUT
3YEL/BLUDEFINPUT10REDBRIGHTNESS CONTROLLEROUTPUT
BLKGROUNDOUTPUT11BLU/REDA/C THERMOSTATINPUT
5GRN/REDRECIRCULATEINPUTGRNHEATER FAN SWITCHOUTPUT
6GRN/WHTFRESHINPUT
7YEL/REDVENTINPUT14BLK/YELINPUT
21-19

Blower Unit
Replacement
NOTEr The blower motor, recirculation control motor
and blower resistor can be replaced without removjng
the blower unit (see page 21-21).
Remove the glove box {see section 20}.
Remove the four bolts and the glove box frame.
Without Air Conditioning
3-a. Remove the wire harness clips trom the heater duct.
Remove the tour self-tapping screws and the heat-
er duct.
1.
2.
HEATER DUCT
21-20
With Air Conditioning
3-b. Remove the evaporator (see page 22-26).
CLIPS
9.8 N.m 11.0 kgf.m,7.2 rbf.ftl
4. Disconnect the connectors from the blower motor,
the blower resistor and the recirculation control
motor,
5. Remove the wire harness clip from the recirculation
control motor, and release the wire harness from the
clamp on the blower unit.
Remove the two mounting bolts, the mounting nut
and the blower unit.
6 x 1.0 mm
6.
6 x 1.O mm9.8 N.m (1.0 kgf'm,7.2 rbr.ftl
Install in the reverse order of removal. and make sure
there are no air leaks.
9.8 N.m (1.0 kgl'm,

Heater Unit
Replacement
SRS components are located in this area. Review the
SRS component locatio.s, precautions, and procedures
in the SRS section (23) before performing repairs or ser-
vtce.
1. When the engine is cool, drain the engine coolant
from the radiator (see section 1O).
@ oo not remove the radiator cap when
the engine is hot; the engine coolant is undol
prsssure and could sevdely scald you.
2. Ooen the clamD, then disconnect the heater valve
cable from the heater valve arm.
HEATER VALVE CABI-E
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21-22
3. Disconnect the heater hoses lrom the heater unit.
CAUTION: Engine coolant will damaga paint. Ouick-
ly rinse any spilled engine coolant from painted
sudaces.
NOTE: Engine coolant will run out when the hoses
are disconnected, drain it into a clean drip pan.
4. Remove the mounting nut from the heater unit.
NOTE: When removing the mounting nut, take care
not to damage or bend the fuel pipes, brake pipes,
etc.
8 x 1.25 mm22 N'llt. 12.2 kgl'm, 16 lbl.tl)
CLAMPS
HEATER HOSES

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5.
6.
7.
8.
Remove the dashboard (see section 2O).
Remove the heater duct (see page 21 20) or the
evaporator lsee page 22-261.
Remove the two bolts, the nut and the passenger's
SRS beam.
PASSENGER'SSRS BEAM
Disconnect the mode control motor connector. and
remove the wire harness clip from the heater unit.
Remove the two mounting nuts and the heater unit.
6 x 1.0 mm9.8 N.m (1.0 kgf.m, 7.2 lbf.ftl
I r 1.25 mm22 N.m 12.2 kgf.m, 16 lbf'ft)
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lnstall in the reverse order of removal. Make note of
these items:
. Apply sealant to the grommets
. Do not interchange the inlet and outlet hoses.
Make sure that the hose clamps are secure.
. Loosen the bleed bolt on the engine and refill the
radiator and coolant reservoir with the proper
engine coolant minure (see section 10).
Tighten the bleed bolt when all the trapped air
has escaped and engine coolant begins to flow
from it (see section 10).
. Connect all cables and make sure they are prop-
erly adjusted (see page 2'l-271.
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21-23

1.
2.
Remove the screw and the damper arm cover.
Disconnect the link from the damper arm, and re-
move the screw and the damper arm.
Remove the two screws and the heater core cover.
Remove the screw and the pipe clamp.
Pull out the heater core.
NOTE: Be careful not to bend the inlet and outlet
pipes during heater core removal.
Assemble in the reve.se order of disassembly.6.
HEATER CORE COVER
OAMPER ARM COVER
HEATEF CORE
DAMPER ARM
'r/ rll
I)Y
Heater Unit
Overhaul
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21-24

Heater Control Panel
Replacement
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2.
1.Disconnect the air mix control cable from the heat
er unit (see page 21-27).
Remove the rear window delogger switch and the
hazard warning switch.
Remove the two self-tapping screws, then pull out
the heater control panel and the center air vent. Dis-
connect the connectors, and remove the heater con-
trol panel and the center air vent.
NOTE: The locking tabs of the hazard warning
switch and heater control panel connectors are on
the bottom.
CENTER AIR VENTREAR WINDOWD€FOGGERswtrcH
HAZARDWARNINGswrTcH
CONNECTORS
4. Remove the four self-tapping screws and the center
atr vent.
Install in the reverse order of removal, and adjust the
air mix control cable at the heater unit (see page
21-271.lt necessary, adjust the heater valve cable
lsee page 21-27).
5.
AIR MIX CONTROL CABLE
CENTER AIR VENT
21-25

HEATER FAN SWITCHTest, page 21 30
AIR MIX CONTROL CABLEAdjustment, page 21-27
Air Mix Contlol Cable ReDlacement
1. Cut the inner cable on the lever side of the cable
holder, then remove both pieces of the inner cable.
2.Using a shafp knife, cut completely through the end
of the cable housing at the two locations.
Slide the large section of the cable housing out of
the cable holder, being careful not to damage the
cable stops.
Carefully remove the cut pieces of the cable hous
ing with a small tlat tip screwdriver.
Hook the tip of the new air mix cable to the temper-
ature control lever, then push the cable housing into
the cable holder until it locks place.
3.
AIR MIXCONTROLCABLE
5.
NOTEr Atter assembly, check that the temperature control lever slides smoothly through the full stroke from right
to left.
Heater Control Panel
Overhaul
t
21-26