1999 HONDA CIVIC Power

Doors
Glass/Regulator Replacement (cont'dl
Grease all the sliding surfaces of the regulator where
shown.
NOTE:
. lf necessary, remove the power window motorfrom the regulator.
. Before removing the power window motor, scribe
a line across the sector gear and regulator.
REGULATOR
5. Installation is the reverse of the removal orocedure.
NOTE: Roll the glass up and down to see if it moves
freely without binding. Also make sure that there isno clearance between the glass and glass run chan-nel when the glass is closed. Adjust the position ofthe glass as necessary.
SECTOR GEAR
20-20
Glass Adjustment
NOTE:
. Place the vehicle on a firm, level surface when adjust-
ing the glass.
. Check the weatherstrips and glass run channel for dam-
age or deterioration, and replace them if necessary.
1. Remove:
. Door panel (see pages 20-4, 10, 16). Plastic cover (see pages 20-2,8, 14)
2. Adjust the glass.
4D:
Raise the glass fully.
Loosen the glass mounting bolts (front door)
and regulator mounting bolts.
Push the glass rearward (front door glass) or
iorward (rear door glass).
Tighten the glass mounting bolts (front door)
and regulator mounting bolts.
A >: Gl.3s mounting boltlocations.B >: Regulrtor moutingbolt loc.tions.
Front:
a.
b.
d.
REGULATOR

Mirrors
Mirror Replacement
NOTE: Take care not to scratch the mirror. mirror basecover and door.
l Lower the door glass.
2. Carelully pry out the mirror mount cover panel bynano.
Power mirro.:
MIRROR MOUNTCOVEB PANEL
Manual mirror:
Remove the cap, screw and knob, then remove themirror mount cover panel.
MIRROR MOUNT
KNOB
20-24
3. Remove the mirror mounting nuts while supporting
the mirror.
a: Nut locations,3
€)CONNECTOR(Nrirror side)
MIRROR
(Door harnessside)
CONNECTOR
Installation is the reverse of the removal procedure.
NOTE: Make sure the connector is connected prop-
erly.

Dashboard
Component RemovaUlnstallation
CAUTION: When prying with a flat-tip screwdriver,
wrap it with protoctivo tape, and apply protective tape
around tho r6lat6d parts, to prevent damag6.
NOTE: Take care not to scratch the dashboard and relatedpans.
Instrument Danel removal:
1.Lower the steering column.
Remove the screws, and detach the clips, then care-
fully remove the instrument panel.
3. Installation is the reverse of the removal procedure.
>: Clip locations, 2
.il |
Pit)_ _ ,/
>: Screw locations,2
^l
@sl
:)
PANEL
20-68
Driver's dashboard lower cover and knee bolster removal:
SRS components are located in this area. Review the SRS
component locations, precautions. and procedures in the
SRS section (24) before performing repairs or service.
'1. Remove the screws, and detach the clips, then
remove the driver's dashboard lower cover. lf
equipped with power mirrors and moonroof, discon-
nect the connectors.
>: Screw, boh loc.tionsA>.3B>,2
_-rri I /a_6x1.0mm*\Y @{[) s 8 N'm tt o rst'm,
_-_- J _ \J- 7 2_rbtftl -_
>: Clip locationsA>.2 B >, 1
tu
DRIVER'S DASHBOARDLOWER COVER
Remove the bolts, then remove the knee bolster.
Installation is the reverse of the removal procedure.

Heater
lllustrated Index
'96 - 98 Models ................................ 21'2
'99 - 00 Models ................................ 21'3
Circuit Diagram
'96 - 98 Models .....21-4
'99 - 00 Models ................................ 21-5
Troubleshooting - '96 - 98 Models
Symptom Chart ............................... 21-6
Heater Control Panel Input/
Output Signals ..............,.............. 21-7
Flowcharts
Blower Motor Speed ................... 21-8
Bf ower Motor ,...21'10
Mode Control Motor ............... ,.'.' 21-13
Recirculation control Motor ....... 21-16
Heater Control Panel ................ ... 21 -14
Troubleshooting - '99 - 00 Models
Symptom Chart ............................... 21-19
Seff-diagnosis Function ............,,,.... 21-20
Flowcharts
Air Mix Control Motor ......,.......... 21-21
Mode Control Motor ............... ..... 21 -25
Recirculation Control Motor ....... 21-27
Bf ower Motor Speed .............. .....21'29
Bf ower Motor ....21-31
Heater Control Panel ................,.. 21-35
Heater Control Panel Input/
Output Signals ............................. 21-36
Blower Unit
Repf acement .........21-37
Overhaul ................ 21-38
* Heater Unit
Replacement ....'....21-39
overhaul """" """' 21-4'l
Heater Control Panel
Repfacement .........21'42
Overhaul -'96 - 98 Models ........... 21-43
Temperature Control
Adjustment - '96 - 98 Models """" 21-44
Adiustment - '99 - 00 Models .......21-45
Air Mix Control Motor
Test - '99 - 00 Models ...........' .......21'46
Replacement - '99 - 00 Models ....21'46
Mode Control Motol
Test ................, .,...'.21'47
Replacement '.'."...21-47
Recirculation Control Motor
Test ................. .......21-48
Repf acement ......." 21-48
Relays
Test ................. .......2'l-49
Heater Fan Switch
Test - '96 - 98 Models ............. .......21-49
Mode Control Switch
Test -'96 - 98 Models ..........."....... 21-50
Power Transistor
Test - '99 - 00 Models ....'........ ....".21-50
*: Read SRS Drecautions before working in this area.

'99 - 00 Models
SRS components are located in this area, Review the SRS component locations, precautions, and procedures in the SRS
section (24) betore perfoming repairs or service.
HEATER UNITReplacement, page 21'39
Overhaul, page 21-41
BLOWEB UNITReplacement, page 21-37Overhaul, page 21 38
HEATER FANswtTcH
RECIRCULATIONCONTROL MOTORTest, page 21-48Beplacement, page 21-48
AIR MIX CONTROL MOTOBTest, page 21-46Replacement, page 21 46
BLOWERTest, page 21-49
POWER TRANSISTORTest, page 21 50
HIGH RELAY
MODE CONTROLDIALHEATER VALVE CABLEAdjustment, page 21 45TEMPERATURE CONTROLDIALAdjustment, page 21-45
REAR WINDOWDEFOGGERswtrcHSee section 23MODEMOTORTest, page 21 47Replacement, page 2 l-47A/C SWTTCH
lwith A/cl
CONTROL SWITCH
21-3

Troubleshooting -'96 - 98 Models
Mode Control Motor lcont'dl
From page 2l-13HEATER CONTROL PANEL lilP CONNECTOR
Wire side of lemaie terminals
Check tor a short in the wi.e(s):1. Remove the center dashboardlower cover (see section 20),and disconnect the heater con-trol panel 14P connector.2. Check for continuity betweenthe No. 1, 4, 7, 8 and 9 termi-nals and body ground individ-
Raprir.ny short in the wire(s)betw€en the mode control motorand the heater control panel.
Check for a shon to power:
Check the same wires {or voltage.
Repair short to pow6r in thewiro(3) betwoen the mode con-lrol motor .nd tha heate. controlprnel, This short also damag.stho heater cont.ol prnel. Repailthe short to power b€{ore replac-ing the heeter conlrol pan6l.
ls there any voltage?
To page 21 15
21-14

From page 21-16
ls there any voltage?
Check {or a short in the wire(s):1. Remove the center dashboardlower cover (see section 20),
and disconnect the heater con_
trol panel 14P connector'
2. Check for continuity between
the No. 12 and No. 13 termi-
nals and body ground individ-
Repair 5hort in the wire{sl between
the recirculation control motor and
the heater control Panel
Check Ior a short to Power:Check the same wires for voltage
Repair short to Power in the
wire {s) between the recirculationcontrol motor and the heater
control panel. This short also
damages the heater controlpanel. Repair the short to Powerbetore replacing the heater con-
trol panel.
Check lor an open in the wire(s):
Check for continuity between the
following terminals of the recircu
lation control motor 4P connector
and the heater control Panel 14P
4P. 14P:No.2 - No. 12No.4 No. 13
Repair open in the wirelsl
between the recirculation control
motor and the heater controlpanel.
ls there continuitY?
Check for loose wires or Poorconnections at the heater control
Danel 14P connector, and at the
recirculation control motor 4P
connector. lf the connections aregood, replace the heater control
Danel,
HEATER CONTROL PANEL 14P CONNECTOR
I;-?45
789'o lx11121314
GRN/WHT
0) (0
GRN/BED
Wire side of female terminals
GRN/RED
GRN/RED
RECIRCULATION CONTROL MOTOR
4P CONNECTOR
Wire side of female tetminals
I23i--?156
78I'olx11121314
GRN/WHT
V)(v
145
7IIrol\l rr1213
GRN/WHT
r zl/lt
21-17

Troubleshooting -'99 - 00 Models
Check tor a short to power:
Check the same terminals forvoltage.
Rapair short to pow6r in thewirelsl botween the heater con-trol panel and the ai. mix controlmolor. This short also damag.sthe heater control panel. Ropairthe short to power betoro replac-ing the heater control panel.
ls there any voltage?
Check for an open in the wire3:Check for continuity between following terminals of the heatercontrol panel 20P connector andthe air max control motor 5P connector.20Pt 5P:No3 _ No. 1No 4 _ No. 5No_ 12 - No. 2No. 15 - No.4No 20 - No.3
Bepair any open in the wire(s)between the heator control paneland air mix control motor,
Check tor loose wires or poorconnections at the heator controloanel 20P connector and at th.air mix control motor 5P connec-tor, ll the connections rre good,substitute a known-good heatercontrol oanel. and recheck. lf thesymptom/indication goes awry,replace the original heater con-trol oanel,
Air Mix Control Motor (cont'dl
From page 21-23HEATER CONTROL PANEL 2OP CONNECTOR
AIR MIX CONTROL MOTOR5P CONNECTORWire side of lemale terminals
Wire side of female terminals
21-24