2003 HONDA CIVIC Turn signal

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
22-56

Gauge Bulb Replacement
CRUISEHIGH BEAM INOICATOR LIGHT {1.4 W)ITOR LIGHT {I.4 W)LEFT TURN SIGNAL INDICATOR LIGHT l1.il wl
GAUG€ LIGHT {1.4 WI
IMMOBILIZEN INDICATORLTGHT {1.4 Wl
GAUGE LIGHT {1.4 W}
RIGHTTURN SIGNAL INDICATOR LIGHT {1.4 WI
22-63

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.
22-65

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.
22-66
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
Gomponent Location Index
UNDER.HOODFUSE/RELAY BOX
\/
HEADLIGHTSReplacement, page 22 79Adjustment. page 22-78Eulb Replacement, page 22-81
HEADLIGHT RELAY 1Test, page 22-51
HEADLIGHT RELAY 2Test, page 22-5'l
0/
FRONT SIDE MARKER LIGHTBulb Replacement, page 22 83
BRAKE PEDAL POSITIONswtTcHTest, page 22-84Adjustment, page l9'6
SIDE TURN SIGNAL LIGHTReplacement, page 22-84
FRONT TURN SIGNALLIGHTBulb Beplacement, page 22 81
PARKING LIGHTBulb Replacement, page 22-81
22-68

-a-.,_
z
REAR SIDE MARKER LIGHTReplacement, page 22-83
HIGH MOUNT BRAKE LIGHTReplacement, page 22-82
LICENSE PLATE LIGHTSReplacement, page 22-83
BACK.UP LIGHTReplacement, page 22-82
TAILLIGHTS snd BRAKE LIGHTSReplacement, page 22-82REAR TURN SIGNAL LIGHTBeplacement, page 22-82
(cont'd)
22-69

Exterior Lights
4.
5.
Combination Light Switch Test/Replacement
1. Remove the driver's dashboard lower cover (see page 20-60).
2. Remove the steering column covers (see page 17-9).
3, Disconnectthe l6Pconnector(A) f rom the combination light switch (B).
Remove the tlvo screws, then slide out the combination light switch.
Inspect the connector terminals to be sure they are all making good contact.
. lf the terminals are bent, loose or co rroded, repa ir them as necessa ry, a nd recheck the system..lftheterminalslookOK,checkforcontinuitybetweentheterminalsineachswitchpositionaccordingtothe
tables.- lf the continuity is not as specified, replace the switch.
Light switch:
Telmint
Position451213
Headlight switch
OFF
LOWo--
HIGHo--
Passing switch
OFF
ONo-
Turn signalswitch:
Terminal
Position21011
LEFT----o
NEUTRAL
RIGHTo--
22-80

Bulb Replacement
Headlight:
1. Disconnect the 3P connector (A) from the headlight.
Headlight {high/low): 60/55 W
f-rI-'-+lA- )/
Remove the rubber cover (B).
Pull the retaining spring (C) away from the bulb (D),
then remove the bulb.
Install a new bulb in the reverse order of removal.
Make sure the notches in the bulb align with the
tabs ln the headlight.
2.
Front Turn Signal Light:
Parking Light:
1. Remove the inner fender (see page 20-102).
2. Disconnectthe connectors (A) from the lights.
21W
5W
4.
Front turn signal light:
Parking light:
Turn the bulb sockets (B) 45'counterclockwise to
remove them from the headlight housing.
Installthe new bulb(s) in the reverse order of
removat.
22-81