oil HONDA INTEGRA 1998 4.G Workshop Manual

Integrated Control Unit
see Rear @Window See Wipef/Washer |-'l----
, See Ground' Distribution,
: pase 14-5.
c439
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WHT/BLU
c438
YEUREO
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SeeCharoinoSyste'm '
--.-,
See Wiper^Vasher
See EngineOil PressureIndicatorLight
rr{See GroundDishibution,page 14-5.
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v---!G401
Window See Wioef/Washer f -'l-- - -'l UNDER-HOODDefogser ,-- | I rUS: +e IFUSE/RELAY
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See Rear
Defogger
FUSE 26 ,
FFAWASiIEB ' See power
' page 10-5. 6
RearWindowDefoggerTimerCircult
IntermftentWiper RelayCircult
Englns OilPrgssureIndicatolFlasherClrcuit
70
!..

Engine Oil Pressure Indicator Light
lgnition input
L - - - - - *---- ---- --J14 I' Ca14See GroundDistribution,page l4-5.
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See Ground
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UNDER-DASHFUSE/RELAYBOX
Ses PovrerDistribution,p,age 1G5.
wHr/BLU | !-;T-------1.;T
c't27 !
-
f+ see IndicatorsPHO|O 36 | I
| ,A low er,rcrxeI { 6l (xL PfiESSURE
s::t.. i Y l.x8i.."i'o'ttr-r
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GAUGEASSEMBLY
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c452
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YEURED
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l-rlFl ENGTNE OtLI 1 I PRESSURE
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Englne Oil Pr6guroIndlcator FlasherClrcull
72
o--< Distrtbution,

- How the Circuit Works
The low engine oil pressure indicator light works in
two ways: il flashes continuously following a
momentary loss of engine oil pressure, or it comes
on and stays on with a complete loss of engine oil
oressure,
When the engine first starts, before its oil pressure
rises above 4.3 psi, voltage is applied to the closed
and grounded engine oil pressure switch and the
light comes on to test the bulb.
With the engine running, voltage is applied at the
WHT/BLU wire of the integrated control unit. With
normal engine oil pressure, the engine oil pressure
switch is open and the low oil pressure indicator
light does not come on. lf the engine oil pressure
switch closes momentarily (more than 0.5 seconds)
but then opens again, the YEURED wire at the
integrated control unit will sense ground through the
switch. The integrated control unit will then provide
and remove ground for the low oil pressure indicator
light through the YEURED wire. The light will flash
on and off until you turn the ignition switch off. The
flashing feature will not work until 30 seconds after
initial voltage is applied to the WHT/BLU wire of the
oil pressure indrcator llasher circuit. This delay
keeps the low oil pressure indicator light from
coming on during engine warm-up.
lf engine oil pressure falls below 4.3 psi and does
not increase, the engine oil pressure switch will stay
closed. The low oil pressure indicator light will then
come on and stay on.
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
72-1

See Dash andConsole Lights
GAUGEASSEMBLY
(cont'd)
80-1
CRUISEcor{TRoL'NDICATONLIGHT
TcrurFlI cofnot I
r.ow ENGTNE IOIL PRESSURE IINDICATORLIGH'
I\YrlL:J
See Gauges,I'lT Gear PositionIndicator
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See CrlControl
See GroundDistribution,page 14'5.
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See PGM'FI See Engineoil PressurelndicalorLight
* = '98-'99 Modets
SeeMaintenanceReminderLight
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Gauges (cont'd)
- How the Circuit Works
When the ignition switch is in ON (ll) or START (lll),
battery voltage is supplied through fuse 25 to the
gauges in the gauge assembly.
Speedometer and Odometer
The odometer and speedometer drive circuits
receive pulses lrom the vehicle speed sensor
(VSS). The pulse rate increases as the car
accelerates. The frequency and duration of these
input pulses are measured and displayed by the
speedometer, odometer and tripmeter.
Tachometer ('98-'99 Models)
The tachometer drive circuit receives oulses from
the ignition control module (lCM) in the distributor
assembly. The solid-state tachometer then displays
these pulses as engine speed. For each 200 pulses
per minute from the ignition control module (lCM),
the tachometer displays 100 RPM.
Tachometer ('00 Model)
The tachometer drive circuit receives pulses f rom
the PCM or ECM. The solid-state tachometer then
displays these pulses as engine speed. For each
200 oulses oer minute trom the PCM or ECM the
tachometer displays 1 00 RPM.
Engine Coolant Temperature Gauge and Fuel
Gauge
The engine coolant temperature gauge has two
intersecting coils wound around a permanent
magnet rotor. Voltage applied to the coils, through
fuse 25, generates a magnetic field. The magnetic
field, controlled by the engine coolant temperature
gauge sending unit, causes the rotor to rotate and
the gauge needle to move. As the resistance in the
sending unit varies, current through the gauge coils
changes. The gauge needle moves toward the coil
with the strongest magnetic tield. The fuel gauge
works the same way.
The engine coolant temperature gauge sending
unit's resistance varies from about 137 ohms at low
engine temperature to between 30-46 ohms at high
temperature (radiator fan running).
The fuel gauge sending unit's resistance varies from
about 2-5 ohms at full, to about 110 ohms at empty.
When you turn the ignition switch to LOCK (0), the
gauge remains at the last reading until you turn lhe
ignition switch to ON (ll) or START (lll) again.
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
81'2

Brake Lights
- Hatchback
c521
NOTE: Wires that look like this q-
are part of the optional Hatch spoiler
Harness installed between factory
harness connectors.See Power Distribution,page 10-9.
UNDER-HOODFUSE/RELAYBOX
r-F-.t BRAKE SWTTCH
| ,, I Closed.wth brake
!'J3l 9ji'i ""0.""'"o
2 Y C431(Cruise Control3) llGRTTAIi'HT
Ic418-i fierminals 15-17)N PHOIO 56! See ABS, PGM-FI,b-Q ciu iie-c-6 nt'oi,A/T Controls
GRN/ryVHTGRNAI/HT
All exceptGS aod GS-F
c526
GS and GS-R
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GFN/With OptionalHatch Spoiler
c523
GRN/
See Taillights
d
See Taillights
4
o""a", 'il
z I xigrr uount2 ,l Hrgh Mounl
,- ll Brake Lighi'' ll ConnectorGRN^!/HT ll atn;;i;;
c72
GANAVHT
GFNA!/HT
GFNAVHT
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c762
-l H|GH I MOUiII BRAK. I LIGHI
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GRNAVHl
GFNAI/HT
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llFl xrcnl/ 1.,\l MoUNT
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LEFTBRAKELIGHT/TAIL.LIGHT
RIGHTBRAKELIGHT/TAIL-LIGHT
c756
c756
MOUNTHIGHMOUNTBRAKELIGHT
i4TO 117
BLK
c523
1 V High Mount
JIBrake LightConnector
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See GroundDistribution,page '14-7.*"1--./-.::I1
- PHOTO 1i7
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GRNA!/HT N GFNAIVHT
4 A C520
110-6

- Sedan
i-J;u;';,-- I P,H",E-ffi9I HOi}l,SroP I BOX! 5 'oa See Power Distribution' I PhoTo2l
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t'uise Control 2) l C431r'?F1 BRAKE SWTTCH
I t I Closed with brake
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NOTE: Wires that iook like this q---f
are part of the Optional Trunk Spoiler
Harness installed between factorv
harness connectors.
-'rf Fermlnals l5-17)
)l P,ata 56 see ABS. PGM-F|.baQ Cruise Control,A/T Controls
10GFNAA/HI
4 TRAILERLIGHTING
c422
c516(lnline connector; maynot be present in all cars.)
cszri !S$,!"croR
c536
GBNAVHT
1
See Taillights
Yil
1? I GFN^vHr
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LEFTINNERBRAKELIGHT/TAIL-LIGHT
GRNAVIIT
c523 2
See Taillights
Ytl
1? I GFN/wHr
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RIGHTOUTERBRAKELIGHT/TAIL-
c521
GFNAVHT
See Taillights
Ylt
lt? I oRN^vHr
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withTrunkSpoiletr
c534t.+1
High MouniBrake LightConnector
c72
GRN/c7n wHT
HIGHMOUNTBRAKE 2LIGHT
High MouniBrake LighiConneclol
LEFTOUTERBRAKELIGHT/TAIL.LIGHT
RIGHTINNERBRAKELIGHT/TAIL-LIGHT
See Taillights
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GBN/
GRN/
GRN/
GRN/
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BLK
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- BIK
See GroundDistdbution,page 1+8.
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110-7
Ho,o.- PHoro 702

Power Windows (conrd)
- How the Circuit Works
CAUTION: You could iniure your arms, hands,
or fingers if you unintentionally switch the
driver's window to "automatic down,' while
working in that door with the power on. Discon-
nect the window switch connector or the battery
when working in the driver's door.
System Description
The operation of the power windows is controlled by
the main switch in the power window masler switch.
When the main switch is in OFF, only the driver's
door window can be opened or closed. With the main
switch ON, all windows can be opened or closed
either by switches in the master panel, or switches in
the doors. The driver's window switch also has an
automatic down mode which is tumed on by pushing
the switch down to its second position.
The power windows are driven by reversible motors.
Each motor is protected by a built-in circuit breaker.
lf the window switch is held on too long (with the
window obstructed, or after the window is fully up or
down), the circuit breaker opens the circuit. The
circuit breaker resels automaticallV as it cools.
Driver's Window
With the ignition switch in ON (tt), vottage isprovided to the coil ol the power window relay
through fuse 24. The contacts of the power window
relay close, and voltage is applied to the driver's
switch. When you push the power window master
switch to Uq voltage is applied to the driver's power
window motor. (The motor's ground path is backthrough the power window master switch.) The
driver's window motor then drives the window uo.
When you push the switch to DOWN, voltage ls
applied in the opposite direction and the motor
drives the window down.
Automatic Down (Driver's Window)
With the ignition switch in ON (tl), vottage is applied
to the coil of the power window relay. The contacts
of the power window relay close and voltage is
applied to the power window master switch. When
you push the driver's switch to the AUTO DOWN
position, voltage is applied through the drivels
switch to the driver's window motor. The control unit
receives pulses at the pulser input while the motor
is running. When the window is fully down, the
motor stops, and pulses are no longer generated by
the pulser. This is sensed by the control unit at thepulsBr input, and voltage is no longer applied to the
driver's window motor.
Passenger Windows
With the ignition switch in ON (tt), vottage is apptied
to the coil of the power window relay through fuse
24. The contacts of the power window relay then
close, applying voltage to the individual window
switches and the power window master switch. With
the master panel main switch ON, the passenger
windows can be operated from the individual
window switches or from the master Danel switches.
When you push the front passenger's window
switch to UR voltage is applied to the front
passenger's window motor. (The motor is grounded
through the contacts in the front passenger's window
switch and the power window master switch.) The
wndow moves up as long as you hold the switch in
lhe UP position. lf you push the switch to DOWN,
voltage is applied in the opposite direction io the
front passenger's window motor, and the window
moves down as long as you hold the switch in the
DOWN position. The window switches in the other
doors operate similarly.
When you push the front passenger's switch in the
master panel to UP, voltage is applied through the
front passengeas window switch contacts to the
front passenger's window motor (The motor is
grounded through the contacts in the front
passenger's window switch and the power window
master switch.) The window moves up as long asyou hold the switch in the UP position. lf you push
the switch to DOWN, voltage is applied in the
opposite direction to the front passenger's window
motor, and the window moves down as long as you
hold the switch in the DOWN position. The otherpassenger window switches in the master panel
operate similarly.
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
120-6

- How The Circuit Wo
With the ignition switch ON (ll), voltage is applied
through fuse 24 to the coil of the moonroof relay.
The moonroof relay energizes and voltage is
applied from fuse 49 through the closed contacts of
the moonroof relay to the moonroof switch.
Open Operation
When you push the moonroof switch to the OPEN
position, voltage is applied to the moonroof motor.
The moonroot motor is grounded through the
CLOSE contacts of the moonroof switch, and the
motor runs to open the moonroof
Close Operation
When you push moonroof switch to the CLOSE
position, voltage is applied to the moonroof motor.
The moontoof motor is grounded through the OPEN
contacts of the moonroof switch, and the motor runs
to close the moonroof.
Refer to the Service Manual (Section 23, Electrical)
for specific tests or troubleshooting procedures.
122-1

Power Door Locks (cont'd)
- Sedan
10
!. -T----'t UNDER.DASH
i IHP'* ![[]:':'*'LJ----J
n "r,n"tn tr t"%% u,
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I secunrrvI SYSTEMi CONNECTOR
I (oPloil)
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19
!T GRN
BLU/AED
14
LT BT]U
Ic611PHOTO 85c634PHOTO 86
2
BLKBEOFRONTPASSEN.GER'SoooRKEYCYLINDERSWITCH
L-t--*J-
DRIVER'SDOORKEYCYLINOERSWITCHPHOfO A5
FRONTPASSEN-GER'SDOORLOCKSwlTCH
DRIVER'SDOORLOCKswtTcH
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at(
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PHO|O 86c611PHOfO 85
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130-2