1994 HONDA INTEGRA ignition

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

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

Description
Based on signals recaived trom the vehicle speed sensor (VSS), the microcomputer in the maintenance remande, unit,which is located behind the dashboard lower cover, computes the distances traveled. When you turn the ignition switchon, the reminder light in the gauge assembly will come on for two seconds (bulb check tunction).Ar 9,650 t 160 km (6,000 t lOo miles) intervals, the reminder light witl gtow for two seconds and then btank ten sec-onds att€r you turn the ignition switch on. This will repeat every time you turn the ignition switch on until the car reaches12,O7O ! 160 km (7,500 1 10O mites).Beyond the 12,O7O ! 160 km (7,500 t IOO mite) interval, the tight will continue ro gtow after the butb check untilyou turn the ignition switch off or reset the unit.To reset the unit, the car must be pa.ked and the ignition switch must be on. Press the reset button on the unit for mo.ethan three seconds, and the reminder tight will go otf.
NOTE:
a Turn the ignition switch OFF b€fore you r€move the 5-P connector from the maintenance reminder unit. otherwiseyou will cancel all data in the memorv.a The data will remain in the memory even when the ignition switch is turned ofJ, or if the unit is disconnected. Whenthe ignition switch is turned on, and the car is driven. additional data will be stored.
-----------------lMAINTENANCE REMINDEN UN|T
sEt{son tvss
23-129

Maintenance Reminder Unit Input Test
1.With the ignition switch OFF, disconnect the 5-P
connector from the reminder unit,
Inspect the connector and socket terminals to be
sufe they are all making good contact.
a lJ the terminals are bent, loose orcorroded, repair
them as necessary, and recheck the svstem.
a It the terminals look OK, make the following in-
Put tests at the connecto..- lf a test indicates a problem, tind and correct
the cause, then recheck the system.- It allthe input tests prove OK, the reminder unit
must be taulty; replace it.
View trom wire side
No.WireTost condltionTest: DaEired rasultPossibl€ cause if result is not obtained
IBLKUnde. all conditionsCheck for continuity to ground:
There should be continuitv.
. Poor ground (G201, G4O1). An open in the wire
WHT/BLU
Under all conditionsCheck tor voltage to ground:
There should be battery voltage
. Blown No. 32 (7.5 A) fuse in the
under-hood tuse/relay box. An open in the wire
YEL
lgnition ON (lllCheck for voltage to ground:
There should be batte.y voltage
. Blown No. 15 (1O A) fuse in the
under-dash fuse/relay box. An open in the wire
4PNK
lgnition ON (ll)Connect to body ground; The
reminder light should go on.
Blown No. 15 (1O A) tuse in the
under-dash fuse/relay box
Blown bulb
An open in the wire
EORN
lgnition ON {ll), car in
neutral with lront ol
car raised, one wheel
rotated with other
wheel blocked
Check for voltage to g.ound:
Meter should indicate pulsing
voltage.
. Faulty vehicle speed sensor (VSS)
. An oDen in the wire
23-131

UNOER_HOOD FUSE / REI.AY 8OX
Circuit Diagram
IGNITIONswrTcHUNOER-OASHFUSSREI-AY 8OX
No.19ll0A)FUSE
TMI{SMrSSr0r,lc0IJTRori.IODULEITCMI
fitMritc-;-CANCEL lgll
tlYELTWHT GRN/8L|(
D4
II._l
TRANSMISSIONMODU|.! [TCM}
t
INTERLOCKcoMtRotUNJ]_
IGRT'IMHTo*nn,o_yTT
pr{x/cR1 -J
IGR €|-U -l
GRiITYEt
LT GNNiW{T
No.19 {lFUSE
V
I
I
DASH I-IGHTSBRIGHTNESSCONTROI.IERG2o lG401
I
G201G40t
/-?t ftrt*lwHT/BLX +wHT+ CH- Bl.x/Y€t -+<.\-o+!
y "l
IYEL
lln tho gtugo 8ls€mbvl
AN GEAR POSITION INDICATOR DIMMING CIRCUIT
A/T GEANPOStTt0NcoNsot-ELIGHT0.4w)
M GEARPosrTroN swncH
23-133