1994 HONDA INTEGRA Workshop Manual

Disassembly
NOTE: Handle the terminals and printed circuit boards caretully to avoid damaging them.
ENGINE COOLA]TTTEiIPERATURE {ECT}GAUGEMOUNTING SCREW (x 3)
TAGHOMETER MOUI{TING SCREW (x 3l
SPEEDOMETER MOUNTTNG SCREW tx 4l
. SPEEDOMETER
k)T
-
n
FUEL GAUTest, psgeGE UNIT23-123
Specilication, pa96 23-1 14Troubfeshooting. page 23-1 20. ODOMETERTroubleshooting, page 23-1 20. TRIP METERTroubfeshooting, page 23-1 20
23-119

Speedometer/Trip Meter/Odometer
Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
Item to be inspected
Symptom
-9
;6+*c.r i.(D
zc*f
;59cd)=
E
a
6
E
'iF
o
(L
:lt)a
o
-9
>g
q)
qlv
E
'
E
oo
Odometer and trip meter wotk, but speedometer does
not.12
SDeedometer works, but odometer and trip meter do
nor,1
Speedometer. odometer, and trip meter do not work.
VSS Input Test (At ham€ss side of 3-P connector)
No. Wir6Tost conditionT€st: Desirsd resultPossible cause it result is not obtained
1BLKUnder all conditionsCheck for continuity to ground:
There should be continuity.
. An open in the wire. Poor ground (G1O1)
BLK/YEL
lgnition switch ON (ll)Check tor voltage to ground:
There should be battery
voltage.
Blown *No. 24 fuse in the unde.-
dash tus€/relay box
Short to ground
An open in the wire
ORNlgnition switch ON (ll)Check for voltage to ground:
There should be about 5 V.
. Shon to ground
. An open in the wire
NOTE: A short to ground in the
vSS Tost
Speedometer does not work.
ORN wire can be caused by a short in any component connected to lt.
3-P CONNECTOR
Inspect 'No. 24luse in the under-dash tuse/relay box beloretesting.
Turn the ignition switch ON lll).
Measure voltage between theBLK/YEL wire terminal and the8LK wire terminal in the harnessside of the 3-P connector.
{To next page)
23-120
24 (15 A): 81881 engine No. 24 {20 A): 818C1 engine

{From previous page)
Check tor continuity between theBLK terminal and body ground.ls there battery voltage?
Measure voltage between theORN and the BLK wire terminals.Ropair opon belw€onVSS and ground G101.
Ropair opon in tho BLKrYEL wirobotwoen VSS and undor-dsshluse/rolay box.
ls there about 5 V?
Ropair op6n in th6 ORN wire orshon to body ground.Raise the tront of the car and sup-port it with salety stands.
Touch a probe to the ORN wireand connect at to body groundthrough a voltmeter.
Putthe car in neutralwith kev ON.
Slowly rotate one wheel with theother wheel blocked.
Does voltage pulse from O toabout 1O V?Roplac. tho VSS {see page23-1221.
Touch a probe to the ORN wireand connect it to body groundthrough a voltmeter.
Slowly rotate one wheelwith theother wheel blocked.
Ropair opon in th6 OBil wire bo-tween tho VSS and th6 3p.odo-molgt.
Ooes the meter indicatepulsing voltage?
23-121

Replacement
Disconnect the 3-P connector trom the vehicle speed
sensor {VSS).
Remove ihe two mounting bolts, then remove the
VSS.
InstSll in the revsrse order of removal.
NOTE: The VSS drive link is a very small paru
caretul not to lose it.
Engine Oil Pressure
Vehide Speed Sensor (VSSIIndicator System
Engine Oil Pressure Switch Test
1. Remove the YEL/RED wile from the engine oil pres-
sure switch.
ENGI'{E OIL PRESSURE SWITCH
Check tor continuitv between the positive torminal
and the engine {gtound) with the ignhion swhch OFF.
a lf there is continuity, go to step 3.
a lf there is no continuity, replace the switch.
Check for continuity again, this time with th€ engine
runnrng.
a lf there is continuity, go to step 4,
a lf there is no continuity, the switch is OK.
Make sure engine oil level is OK, then check engin€
oil pressure (s€e section 8).
a lf engine oil pressure is OK, replace the switch'
a lf engine oil pressure is low, check the sngine oil
pump (see section 8) and, if necessary, replac€ it.
POSITIVE TERMII{AL
23-122
nlmlliitl

Fuel Gauge
Gauge Test
NOTE: Refer to page 23-1 16 for the luelgauge systemcircuit.
'1. Check the No. 15 {1O A) fuse in the under-dashfuse/relay box before testing.
2. Remove the rear seat (see section 2Ol.
3, Remove the protective cover and access Danel Jromthe tloor.
4. With the ignition switch OFF, disconnect the 3-pconnectot from the fuel gauge sending unit.
PROTECTIVE
Connect the voltmete. positive paobe to theYELMHT terminal and the negative probe to theBLKMHT terminal, then turn the ignition switch ON(ll). There should be between 5 and 8 V.
a lf the voltage is as specified. go to step 5.a It the voltage is not as specified, check for- an open in the YEL/WHT. BLU/WHT orBLK/WHT wire.- poor ground (G5O2).
o.Turn the ignition switch OFF. Attach 8 jumper wir€between the BLKA HT and YELMHT terminats.then turn the ignition switch ON 0l).Check that the pointer of the fuel gauge starts mov-ing toward the "F" mark.
CAUTION: Turn th€ ignition switch OFF boforo thepointer roachas "F" on tho gauge dial. Failuro to doao may damage tho fuel gauge.
NOTE: The fuel gauge is a bobbin (c.oss-coitl typegauge. hence the tuel level is continuously indicat-ed even when the ignition switch is OFF, and thepornter moves more slowly than that of a bimetalrype gauge.
a lf the pointer of the fuel gauge does not move atall, replace the gauge.
a lf the gauge is OK, inspect the {uel gauge send-ing unit.
23-123

Fuel Gauge
Sending Unit Test/Replacement
@ oo not lmoke while working on tho fuol
system. Kaop open flamos away from your wotk aroa.
1. Remove the rear seat (see section 2O).
2. Remove the protective cover and access panel lrom
the floor.
3. With the ignition switch OFF, disconnect the 3-P
connector from the fuel gauge sending unit.
4. Remove the tuel gauge s€nding unit.
5. Measure the resistance between the A and B termi-
nals at E (empty), 1/2 (half full) and F (full) by mov-
ing the tloat.
6. Check the change in resistance by moving the float
uo and down.
(
lf unable to obtain the above readings or it resistance
do€s not change, replace the fuelgauge sending unit.
Float PositionE
Resistance lO)105-11025.5-39.52-5
o
23-124

Low FuelIndicator
IndicatorLight Test
Seat Belt Reminder
System
Seat Belt Switch Test
J.
NOTE: Reter to page 23- 1 1 6 tor the wiring description
of the low fuel indicator circuit.
1. Park car on level ground.
@ oo not rmoko whil6 working on th€
fuol system, Keop op€n llamg3 awsy from your work
area. Drain fuel only into an approvod container,
Drain tuel into an 8pplov€d container. Then install
the drain bolt with a new washer.
Add less than 8.2 t (2.2 U.S.Gal, 1.8 lmp.Gal) of fuel
and turn the ignition switch ON (ll). The low fuel in-
dicator light should com€ on within lour minutes,
a lf the light does not come on, remove the access
Danel and disconnect the 3-P connector from the
fuel gauge sending unit, Connect the A
(BLKMHT) terminal to the C (BLU/WHT) termi-
nal with a iumper wir€.- lf the light comes on, the problem is either the
sending unit or its ground.- lf the light does not come on, the problem is
an open in the BLU/WHT wire to the gauge as-
sembly, no power to the gauge, or a blown
bulb.
a lf the light comes on, add approx. 4, {1.1
U.S.Gal, O.9lmp.Gal) ot tuel, the light should go
ofJ within four minutes.
3-P CONI{ECTOB
View lrom wire side
1.Slide the driver's seat to the middle position, then
disconnect the 2-P connector Jrom the back ot th€
sear.
Check for continuity between the A and B terminals
in each condition according to the table.
2.
NOTE: Befer to page 23-146 for the seat
reminder inout test.
3. lf necessary. replace the seat belt switch.
Terminal
C"** \AB
UNEUCKLEDo--o
BUCKLED
ANCHOR
23-125

GaugeTest
NOTE: Refer to page 23-116 fot the wiring description
oJ the engine coolant temperature (ECT) gauge circuit
diagram.
1. Check the No. 15 (10 A) fuse in the under-dash
tuse/relay box before testing.
2. Make sure the ignition switch is OFF, then discon-
nect the YEL/GRN wire from the ECT gauge send-
ing unit and g.ound it with a jumper wire.
Turn the ignition switch ON (lll.
Check that the pointer of the ECT gauge starts mov-
ing toward the "H" mark,
CAUTION: Tuln th6 ignition switch OFF botore th€
point reaches "H" on tho gaugo dial. Failuro to do
so may damago tho gaugo.
a It the pointer of the gauge does not move at all,
check Jor an oDen in rhe YEL or YEL/GRN wire.
lf the wires are OK, replsce the ECT gauge.
a It the ECT gauge works, test the ECT sending
untt.
J.
Engine Coolant Temperature (ECTI Gauge
ECT Sending Unit Test
Disconnect the YEL/GRN wire from the ECT send-
ing unit.
With the engine cold, use an ohmmeter to measure
resistance between the positive terminal and the en-
gine (ground).
Check the temperature of the coolant.
Run the engine and measure the change in ,esistance
with the engine ai operating temperatu.e {the radi-
ator tan comes on).
5. ll the obtained readings are substantially different
Jrom the specifications above, replace the ECT send-
ing unit.
23-126
POSITIVE TERMINAL
Temperatu.e1330F (560C)185.F (850C)-
2120F (1000c)
Resistance (O)'t3746-30