2002 HONDA CIVIC multiplex control unit input test

Multiplex Control System
Component Location Index
IGNITION KEY LIGHTTest, page 22'91
lr, J
REAR CEILING LIGHTTest, page 22'96
LIGHT/SPOTLIGHTSTest, page 22-96
GAUGE ASSEMBLY
ECM
MULTIPLEX CONTROL UNIT{Built into the under-dashfus6/relav boxlTroubleshooting, page 22'172Input Test, page 22-175
22-168
t

IMultiplex Control Unit Input Test
Remove the driver's dashboard lower cover (see page 20-59).
Disconnect the under-dash fuse/relay box connectors C, E, F, J, K, O, p, O, X and y.
NOTE: All connectors are wire side of female terminals.
CONNECTOR C {14P}CONNECTOR E I13P)
1.
2.
CONNECTOR F {12P}
GRN/RED {USAIGRN/ORN (Canada)
coNNECTOR P (18P)
CONNECTOR J {8PI
WHT/RED
123
4561
BLK
{cont'd)
GRN/ORN BLU
CONNECTOR K {17P)
I
CONNECTOR O I12P)
CONNECTOR X {8P)CONNECTOR O (8P}
LT GRN/RED GRN/ORN
CONNECTOR Y {13P)
BRN/YEL
BLU/REDBLU/RED
345
67E10 )./12
YELGRN/RED
12457
810/V,/ l,/
WHT/GBN
3567I
,/1,/l,/121517
REDGRN/RED
WHT/BLK
RED/WHT
23,/1,/
618r012
BLK
22-175

Multiplex Control System
Multiplex Control Unit lnput Test (cont'd)
3. Inspect the connector and socket terminals to be sure they are all making good contact
.lftheterminalsarebent,looseorcorroded,repairthemasnecessary,andrecheckthesystem. llthe terminals look OK, go to step 4.
4. Reconnectthe connectorstothe under dash fuserelay box, and make surethese inputtests atthe appropriate connectors on lhe under-
dash fuse/relav box.
. lf any test indicates a problem, {ind and correct the cause, then recheck the system. lf allthe input tests prove OK, the multiplex control unit must be faulty. Replace the under_dash fuse/relay box assembly
CavitvWireTest conditionTest: Desired .esult r Possible cause if resullE qS!q!!e!!ed
J4BLK[J nder all conditionsCheck {or voltage 1o ground:Therc sholl.l he 1V or lessPoor ground (G20'l)An ooen in the wire
Y6BLKlJnder all conditionsCheck for voltage to ground:There should bc 1 V or less.Poor ground 1G501)An ooen in the wire
Y1BFNryELParking brake leverdown, turn theigntion switch ON (ll)
Check for voltage to ground:There should be battery voltagewhile the Brake system indicator ison forthe buld check.
An open in the wireShortto groundFaulty ABS modulatorcontrol unit
Check for voltage to ground:There should be 1V or less when the
J2WHT/REDUnder allconditionsCheck for voltage to groundiThere should be baftery voltage.Blown No.9 (10A)fuse in the under'hoodfuse/relay boxAn oncn in rhc wire
CavitvTest conditionTesi: Oesired resultPossible cause ifresult is notobtained
o3GRNDriver's door openCheck for voltage to ground:There should be 1 V or less-Faulty driver's door switchAn ooen in the wire
Driver's door closedCheck for voltage to ground:There should be 5 V or more.Faulty driver's door switchShort to qround
O4LT GRN/REDPassenger's doorCheck .for voltage 10 ground:There should be 1 V or less.Faulty passenger's door switchAn ooen inthewire
Passenger's doorCheck for voltage to ground:There should be 5 V or more.Faulty passenger's door switchShort to oround
osI]l.l
4.,
F1
F8
GRN/ORN
GRN/ORN
GRN/RED(USA)GRN/ORN(Canada)
Parking brake leverCheck for voltage to groLrnd:There shorl.l be 1 V or less.Faulty parking brake switch. An ooen in thewireCheck for voltage to ground:There should be 5 V or more.
. Faulty parking brake switchShortto ground
o5BLU/REDlgnition switch ON (ll),
driver's seat belt isCheck for voltage to ground:There should be 1V or less.Faulty driver's seat belt switchPoorground (G551)An oDen in the wire
Q6BLU/REDlgnition switch ON (ll)
driver's seat belt isbuckled.
Check {or voltage to ground:There should be 6 V or more.Faulty driver's seat belt switchShortto ground
P18RED
H",=
Check for voltage to ground:There sho0ld be 1V or less-
f -9*:li:'^:**:':s*:*
Faulty hatch latch swrtchPoor ground (G552)An open in the wireFaulty hatch latch switch
X5lgnirion key in the Check for voliage to gtound:ignit on switch Thpre should be I V or lcss
lgnrtron kev our o{ the Check for vollage to ground:
. Faulty ignition key switch. Poor ground (G401). An open in the wire
I : [11y.'::i':::1"' **6
\
22-176

)
Low Fuel lndicatorTest.....................11-158Moonroof Drain Channel SliderReplacement......................................... 20'44
Moonroof FrameRep1acement,,,,,,,,,,.,.,.,.,.,.,.,,,,,,............ 20 42
MoonroolGlassAdiustment ........................................... 20-37Rep1acement......................................... 20 37
Moonroot Limit SwitchAdjustment ........................................-.- 20 46Test ...................................................... 22 113
Moonrool MotorReplacement....-.................................... 2D-41
Oil Pressure SwitchTest ................-.-........-................................ 8-4Replacement.........-................................. 8-16
Oil Pump, EngineOverhau1 ................................................... 8-8
Oil, EngineReplacement...-................-.-...................... 8-5
OPDS UnitReplacement....................................... 23- 124
Outside Mirror HoldersBeplacement......................................... 20-15
Outside Power Mirror ActuatorsTest ...................................................... 22-117Bepf acement..-.................................... 22-1 14
Outside Power Mirror SwitchTest ..-................................................... 22-111
Outsid€ Power MirrorsReplacement............................ ... .. . . . 20-15Component Location lndex .............. 22- 114Circuit Diagram .................................. 22-115Test -..................................................... 22-116
Lower ArmsRemoval/1nsta11ation............................ 18 19
Lubrication SystemComponent Location Index..................... 8-3Test............................................................ 8 4
M
M/TAssemblyRemoval.......... 13-4 Test...................... 22-1 12lnstallation............. 13-8
.........21,35
Disassembly ......................................... 13-14Resassembly .. ... ................. 13-46
M/TChange Leverlnspection ............................................. 13-19Disassembly 8eassemb1y ................... 13-20
M/T Countershaft AssemblyInspection ....................................... 13 31, 33Disassemb1y ......................................... 13-32Resassemb|y ........................................ 13-34
M/T DifferentialComponentLocation Index................. 13-52Adiuslment ........................................... 13-56
M/T Maifthaft Assembly1nspection ... ................................... 13-23, 26Disassembly ......................................... 13 25Resassembly ........................................ 13 28Adjustment ........................................... 13-43
M/T Reverse Shift ForkInspection .................... ........................ l3 19
M/T Shift LevelReplacement......................................... 13-51
Mainshaft BearingsReplacement....,.................................... 13 41
MairtenancelSee section 3)
MILHow to Informatron ............................. 1 1.46
MIL CircuitTroubleshooting .......... .- . . . . ......... 11 97
MirrorsComponentLocation Index................. 20'14
Mode Control MotorReplacement
Moonrool SunshadeRep1acement....................... . . ............. 20 40
Moonroof SwitchTesVRep1acement .............................. 22- l 12
Mooniool Wind Def lectorReplacement.......................-................. 20-38
Moonroof/SunroofComponent Location Index ... 20-35, 22-108Test ........................................................ 20-48Cf rcuit Diagram .................................. 22- 109
MTFInspection/Rep1acement. .......... ........... 13-3
Muhiplex Control SystemComponentLocation lndex ..............22 168Circuit Diagram .................................. 22-1690escription ......................................... 22-17 1Troubleshooting ................................ 22-17 2
Muliiplex Control Unit, Under-dashInput TestEntry Light Control Sysiem ............. 22-92Keyless Entry/Security AlarmSystern .-....................................... 22-155MultiplexControl System .............22 115Wiper/Washer................................. 22'1 41
NoiseTest,,Reduction Condenser
Parking ErakeInspection Adjustment ........... .............. 19-7
Parking Brake CableRep1acement......................................... 19-26
Parking Erake Switch
P
l
Test ...................... 19-10
Test............................... . ...........2135
Moonroof Auto Stop SwitchosTest ...................................................... 22'113
Moon.oot Control Unillnput Test ............................................ 22-110
Moonroof Drein ChannelBeplacement ... . ....... ......................... 20 39
Oil Filte]Replacement............................................. 8-6
Oil Filter Feed PipeReplacement............... . ..-,...,.,,,,,,,,8-7
Oil PanRemoval .............,.,,,,,,,,,,,,.,.,,,.........-....... 7 1 1lnstallation .............................................. 7 -27
Passenger's TraVRemoval/lnstallation ............................ 20-65
PCV ValveBeplacement....................................... 1 1'169Test........................................... l1 169
Piston Rings8ep1acement................................-.-...-.- 7-21
PistonsReplacement...................-....................... 7-181nsta|1ation ...................................... ...1-23
Power R€layTest ...............-.-...................................... 22-51
Power Window Motor, Driver'stesl.....,,,, .,.,,,............
Power Window Motors, Passenger's
Power Window Switch, Masterlnput Test ..........-.........-....................... 22-126Tesr ....... . ............................................ 22 124Replacement....................................... 22-133
N
..............22 101
o
l' ,e
(cont'd)