2002 HONDA CIVIC ignition

Gauges
Self-diagnostic Procedure
The gauge assembly has a self-diagnosis function.. The Beeper Drive Circuit Check. The Indicator Drive Circuit ChecL. The LCD Segments Check. The Gauges Drive Circuit Check (Speedometer, Tachometer, Fuel gauge, Coolant temperature gauge). The Communication Line Check (the coolanttemperature signal line between the gauge and ECM)
NOTE: Indicators are also controlled via the communication line.
Entering the self-diagnosis f unction:
Before doing the self-diagnosis function, check the No. 9 (10A) fuse in the under-hood fuse/relay box and No. 10 {7.5A)fuse in the under'dash fuse/relay box.
1. Push and hold the trip/reset button.
2. Turn the lighting switch ON.
3. Turn the ignition switch ON (ll).
4. Within 5 sec., turn the lighting switch OFF, then ON and OFF again.5. Within 5 sec., release the trip/reset button, then push and release the button four times reDeatedlv.
NOTE:. While in the self-diagnosis mode, the dash lights brightness controller operates normally.'Whileintheself-diagnosismode,thetrip/resetbuttonisusedtostartthebeeperdrivecircuitcheckandthegauge
drive cicuit check.. lf the vehicle speed exceeds 1.2 mph 12 km/h) orthe ignition switch is tu rned OFF, the self,diag nosis mode ends.
oN flrl
lgnition
Switch
Lighting
Switch
Trip/Reset
Switch-> Move to selt-diagnosis mode.
5 sec.5 sec.
The Beeper Drive Circuit Check:
When entering the self-diagnosis mode, the beeper sounds five times
The Indicator Drive Circuit Check:
When entering the self-diagnosis mode, the following indicators blink.
Seat belt indicator, Door/hatch indicator, Brake system, Lowfuel indicator, Maintenance required indicator (USA),
Washer fluid level indicator (Canada), Oil pressure light.
v
OFF
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The LCD Segment Check:
When entering the self-diagnosis mode, the odo/trip segment blinks five times.
The Gauge Drive Circuit Check:
When entering the self-diagnosis mode, the speedometer, the tachometer, the fuel gauge, and the coolant
temperature gauge needles sweep from the minimum position to maximum position, then return to the minimum
posrtron.
NOTE: After the beeper stops sounding and the needles return to the minimum position, pushing the trip/reset button
starts the beeper drive circuit check (one beep) and the gauge drive circuit check again.
The check cannot be started untilthe needles return to the minimum position.
Self-diagnosismode
Trip/Resetswitch
ON
OFF
ON r-r r-r r-r .-1 r-r r-r
;; lll u u l_l L__l I l-l
5 sec
Faulty:
The needles sweep from theminimum position to themaximum position, then returnto the minimum position-
Normal:
iD
tli-
flOi-
Ending the self-diagnosis function:
Turn the ignition switch OFF.
NOTEr lf the vehicle speed exceeds 1.2 mph {2 km/h), the self diagnosis fu nction ends.
:-l!:!!JlJ!J
,-
t,-- - ,- r- i-
| | | ttfi- r-
9l- r n =--llJL--oFF _---
cause needles Xl" f---U---------l [-----l
Beeper
The Communication Line Check:
In the self-diagnosis mode, after the odo/trip LCD segments check, the self-diagnosis starts the communication line
cnecK.
lf all segments comes on, the communication line is OK.
lf the word "Error" is indicated, there is a malfunction in the communication line between the gauge assembly. the
multiDlex control unit. and the ECM.
@,
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IVehicle Speed Signal Circuit Troubleshooting
Special Tools Required:
Test Harness 07LAJ-PT3020A
Before testing, inspect the No. 4 (10A) and No. 10 (7.5A)
fuses in the under-dash fuse/relay box.
1. Disconnect the 3P connector from the vehicle
speed sensor (VSS) {A).
Connect the test harness only to the engine wire
harness.
Connect the RED test harness clip (B) to the positive
probe of an ohmmeter. Cover the white (C) and
green {D) test harness leads with protective tape (E).
Check for continuity between the RED test harness
clip and body ground,
ls there continuity?
YES Go to step 5.
NO Repair open in the BLK wire between the VSS
and G 101.I
3.
4.
5. Connect the WHT test harness cliD (B) to the
positive probe of a voltmeter, and connect the RED
test harness clip (C) to the negative probe.
Turn the ignition switch ON (ll).
le thara h2ltarv v^ltada?
YES-Go to step 7.
NO Repair open in the BLK,/YEL wire between the
VSS and the under-dash fuse/relay box.l
Disconnect the WHT test harness clip (B).
Connect the GRN test harness clip {D) to the
positive probe of a voltmeter.
Is there 5 V or more?
YES- Go to step 9.
NO Repair short or open in the BLUMHT or WHT/
GRN wire between the VSS and the cruise control
unit, or the ECM.I
(cont'd)
7.
8.
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Gauges
9.
10.
Vehicle Speed Signal Circuit Troubleshooting (cont'dl
Turn the ignition switch OFF.
Connect the other test harness connector (A) to the
VSS (B),
11.Raise the front of the vehicle, and make sure it is
securely supported.
Put the vehicle in neutral with the ignition switch
oN {|| ),
Slowly rotate one wheel with the other wheel
blocked.
Does voltage pulse ttom 0 to about 5 V ot morc?
YES Go to step 14.
NO Replace the VSS.I
't2.
t5.
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14. Disconnect the 22P connector "8" from the gauge
assemDry.
GAUGE ASSEMBLY CONNECTOR B (22P)
Wire side ot female terminals
'15. Connect the positive probe of a voltmeter to the
BLU/WHT wire and the negative probe to ground.
'16. Slowly rotate one wheel with the other wheel
blocked.
Does voltage pulse f rom 0 to about 5 V or more?
YES - Replace the speedometer assembly.I
NO Repair open in the BLUMHTwiTe between
the VSS and the speedometer.l

Exterior Lights
Daytime Running Lights Control Unit Input Test - Canada
The DRL indicator light in the gauge assembly will come on when you turn the ignition switch to ON (ll) with the
headlight switch off and the parking brake se1. lt should go off when you turn on the headlight switch and release the
parking brake. lf it comes on at any other time, do the control unit input test.
NOTE: When the daytime running lights are on, the high beam indicator will glow at half its normal intensity.
1. Remove the driver's dashboard lower cover (see page 20-60).
2, Disconnectthe l4Pconnector(A) from thedaytime running lightscontrol unit(B).
RED/BLUGNN/BLKRED/BLUGRN/BLKGRN/ORN
BLU/RED RED/YEL YEL/RED
Inspect the connector and socket terminals to be sure they are all making good contact.
. lf the terminals are bent, loose orcorroded, repairthem as necessary, and recheckthe system.
' lf the terminals look OK, go to step 4.
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Entry Light Control System
Component Location Index
IGNITION KEY LIGHTTest, page 22-91
IGNITION KEY SWITCHlest, page 22-91
DRIVER'S DOOR SWITCH
CEILING LIGHT/SPOTLIGHTSTest, page 22-96Replacement, page 22-96
REAR CEILING LIGHTTest, page 22-96Replacement, page 22-96
FRONT PASSENGER'SDOOR SWITCH
HATCH LATCH SWITCHTest, page 22-97
CARGO AREA LIGHTTest, page 22-97Replacement, page 22 97
22-89

\lgnition Key Switch Test
NOTE: For more key-in beeper information, refer to the
circuit diagram (see page 22-90) and input test (see
page 22-921.
When the ignition key is in the ignition switch the
multiplex control unit senses ground through the
closed ignition key switch. When you open the driver's
door, the multiplex control unit senses ground through
the closed door switch and sounds the beeper.
1. Remove the steering column upper and lower
covers (see page'17-9).
2. Disconnect the 6P connector.
3.Check for continuity between the No. 1 and No. 2
termrnars.
. There should be continuity with the key in the
ignition switch.. There should be no continuity with the key
removed from the ignition switch.
lf the continuity is not as specfied, replace the
ignition switch.
lgnition Key Light Test
1.Remove the steering column upper and lower
covers (see page 17-9).
Disconnect the 6P connector,
The LED should come on when power is connected
to the No. 6 terminal and ground is connected to
No. 5 terminal.
lf the LED does not come on, replace the ignition
swrtch.
i'
/.'
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I
5. With the connectors stilldisconnected, make these input tests at the connector'
. lf anv test indicates a problem, find and correct the cause, then recheck the system. lf all the inpul tests prove OK, go to step 6.
6.Reconnect the connectors to the under dash fuse/relaV box, and make these input tests at the appropriate connectors on the under-dash
fuse/relay box.
.lfanytestindicatesaproblem,findandcorrectthecause,thenrecheckthesystem..lfalltheinputtestsproveOK,themultiplexcontrolunitmustbefaulty.Replacetheunder'dashfuse/relaYboxassemblY
CavitvWireTest conditionTest: Desired resultPossible cquse il result is not obtained
K28LU/ORNlJnder allconditionsCheck for continuity between the K2terminal and the keyless receiverunit 5P connector No. 2 terminal:There should be continuitv.
An open in the wire
o7GRN/REDCejling light switch inmiddle position.Attach to ground:Ceiling light(s)should come on.Blown No. 3 (7.5A) fuse in the under hood
Blown bulbFaulty ceiling lightAn ooen in the wire
X8WHT/BLKUnder allconditionsAttach to ground:lgnition key light should come on.Elown No.3 (7.5A)fuse in the under hoodfuse/relay boxFaulty ignition key light (LED)
An ooen in the wire
CavitvWireTest conditionTest: Desired resultPosq!!!c sq!!ej1!.9!!!!j €d
P18REDHatch openCheck for voltage to ground:There should be 1 V or less.Poor ground (G552)
Fauhy hatch latch switchAn open inthewire
Hatch closedCheck for voltage to ground:There should be 5 v or more.Faulty hatch latch switchShortto oround
Q3GRNDriver's door openCheck for voltage to ground:There should be 1 V or less.Faulty drlver's door switchAn oDen in the wire
Driver's door closedCheck for voltage to ground:Thar. shoul.l he 5 V or more.Faulty driver's door switch
o4LT GRN/BED
RED^vHT
Passenger's doorCheck for voltage to ground:There should be 1 V or less.
' Faulty passenger's door switch' An onen inthewire
Passenger's doorcroseoCheckfor voltage to ground:There should be 5 Vor more.
. Faulty passenger's door switch. Shor o oround
X5lgnition key insertedinto the ignitionCheck for voltage to ground:There should be 1 V or less.Poor ground (G401)
Faulty ignition key switchAn ooen in the wire
lgnition key removedfrom the ignitionCheck for voltage to ground:There should be 5 V or more.Faulty ignition key switchShort to ground
Y8YEUREDDriver's door lockknob switch lockedCheck for voltage to ground:There should be 1 V or less.Poor ground {G501)Faulty driver's door lock knob switchAn ooen in the wire
Driver's door lockkn6h cwirch Inl6cke.lCheck for voltage to ground:There should be 5 V or more.Faulty driver's door lock knob switchShort to oround
22-93