1999 HONDA CIVIC brake switch

Test conditionTest: Desired resultPossible cause it result is not obtainedCavity
AIYEL
lgnition switch ON (ll)Check for voltage to ground:
There should be banerY voltage.
. Blown No.25 (7.5 A) fuse in the
under dash fuse/relay box
. An open in the wire
A2RED/BLK
Combination light
switch ON and dash
lights brightness
control dial on full
bright
Check for voltage between
RED/BLK and RED terminals:
There should be batterY voltage.
Blown No. 30 {7.5 A) fuse in the
under-dash tuse/relay box
Faulty combination light switch
Faulty dash lights brightness
controller
An open in the wireA3RED
BLUShift lever in P or ICheck for continuity to ground:
There should be continuitY
NOTE: There should be no
continuity in anY other Position.
. Faulty A/T gear Position switch
. An open in the wire
A10GRNShift lever in E or E
A11REDShift lever in E
412WHTShift lever in E
A13BLK/BLU
Shift lever in E
NOTE: Don't depress
the brake pedal.
A9
YEL+ ]lgnition switch ON (ll)
and shift lever in any
position except Pi
Check for voltage to ground:
There should be battery voltage for
two seconds after the ignition
switch is turned ON (ll), and then
less than 'l V.
Faulty TCM*', PCM*3
Faulty PCM*r
An open in the wire
GRN/err*'
lgnition switch ON {ll)
and shift lever in anY
position except E
A8BLKUnder all conditionsCheck for continuitv to ground:
There should be continuitY.
. Poor ground (G401, G402)
. An open in the wire
414LT GRN
lgnition switch ON (ll)Check for voltage to ground:
. There should be baftery voltage*'
. There should be about 5 V*r
Faulty TCM*', ECM/PCM*'
Faulty PCM*1
An open in the wire
*2: CVT ('96 - 98 models)*3r CVT ('99 - 00 modelsl
23-153

(A,4)
A,T GEARPosrfloN swlrcH _ _(Closed h posilon l?l ot [!l )
BLU/BLK -> [h'#f- |COMEINATIONLIGHT SWITCH
V
IREO/GRN
UNDEF.DASH FUSEi RELAY BOX
a
E
YEL
I
A iEi,I,B"'T
vll".i,l
| ,rr.nrorro .orrro, ,*,,
tt-
t(
rffi
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BEMI\DEB crqcurl
lm
| /t I
tffinEoTsru REDTBLU BLIJ/RED clnculr
-neoieru | ,,-,r.0 J
l, "ulTo
/fP /Itr\
YVI onrveqs I or rtor
l3fifl&''' l5frl'.'
l (3'&T' 8iytr") l
(3&Y fiti'fJ"fl )
BLK BLK
TT
c552 G401
I
. BRAKE FLUIDLEVEL SWITCH. PARKING ERAKEswrTcH (usA)
' CEILING LIGHT. KEYLESS RECE VER CIRCUIT(ln lhe audio unil")
..aorr,rro Y
A
Iu$ut,""'
I3fif'3#3trr,)-::
DRIVER'SDOOFswtTcHfolosed : Door open )(Open :Doordosed/
STARTERCUT FELAY
a
-
GFNi RED
23-157

Integrated Gontrol Unit
Input Test (cont'dl
A8--------.--all
Key-in/Seat Belt R€mind€r, Lights-on Reminder Systom:
Cavity WireTest condhion
Bulb Check System (Brako System Light):
Cavity WireTest condilion
Tost: D€sirod r€guh
T6st: Dosirad result
Possible cause if result is not obtained
Possibls cause if rasuft b not obtainod
A8
Combination light
switch ON
Check for voltage to ground;
There should be battery voltage.
Blown No.30 (7.5 A)fuse in the
under-dash fuse/relay box
Faulty combination light switch
An open in the wire
B7RED/BLU
lgnition switch ON (ll),
and driver's seat belt
switch unbuckled
Check for voltage to ground:
There should be 1 V or less.
Poor ground (G552)
Faulty seat belt switch
An open in the wire
B9GRNDriver's door openCheck for voltage to ground:
There should be 1 V or less.
. Faulty driver's door switch. An open in the wire
Bl0BLU/RED
lgnition key inserted
into the ignition key
switch
Check for voltage to ground:
There should be 1 V or less.
Poor ground (G401. G402)
Faulty ignition key switch
An open in the wire
A4GRN/RED
lgnition switch ON {ll),
brake fluid reservoir
full, and parking brake
tever oown
Connect to ground: Brake system
light should come on.
Blown No.25 (7.5 Alfuse in the
under-dash fuse/relay box
Blown brake system light bulb
An open in the wire
A13BLUA/1r'HT
lgnition switch at
START (III)Check for voltage to ground:
There should be battery voltage.
Blown No.31 (7.5 A) fuse in the
under-dash fuse/relay box
Faulty starter cut relay
An open in the wire
23-160

Lighting System
Daytime Running Lights Control Unit Input Test (Canadal
2.
3.
LRemove the driver's dashboard lower cover and
knee bolster (see section 20).
Disconnect the connectors from the daytime run-
ning lights control unit.
Inspect the connector and socket terminals to be
sure they are all making good contact.
lf the terminals are bent, loose or corroded. repair
them as necessary, and recheck the system.
lf the terminals look OK, make the following
input tests at the connector,- lf any test indicates a problem, find and correct
the cause, then recheck the system.- lf all the input tests prove OK, the control unit
must be faulty; replace it.
CavityWireTGst conditionTest: Desired resultPossible cause it result is not obtained
BLKU nderall conditionsCheck for continuity to g.ound:
There should be continuity.
. Poor ground (G401, G402). An open in the wire
A2BLK /VHT
Underall conditionsCheck for voltage to ground:
There should be battery voltage.
Blown No.20 (10 A) fuse in the
under-dash fuse/relay box
An open in the wire
etYEUBLK
lgnition switch ON (ll)Check for voitage to ground:
There should be battery voltage.
Blown No. 18 {7.5 A) fuse in the
under-dash luse/relay box
Faulty ignition switch
An open in the wire
A4RED
Combination light
switch in " =D " posi-
UOn
Check for voltage to ground:
There should be battery voltage.
Blown No. 48 (30 A) tuse in the
under-hood fuse/relay box
Faulty combination light switch
An open in the wire
A1WHT/RED
Combination light
switch OFF; connect ajumper wire between
the YEUBLK and
WHT/RED terminals,
then turn the ignition
switch ON (ll)
Headlights (high beam) should
come on, (and high beam
indicator should come on).
. Poor ground (G201, G202, G40'1,
G402). Blown bulbs. Faulty daytime running lights
resrstor. An open in the wire
GRN/RED
lgnition switch ON (ll),
brake fluid reservoir
full, and parking brake
lever down
Connect to ground: The brake
system light should come on.
Blown No.25 (7.5 A) fuse in the
under-dash f use/relay box
Blown brake system light
An open in the wire
REDiGRNParking brake lever LrpCheck for continuity to groundl
There should be continuity.
. Faulty parking brake switch. An open in the wire
23-166

Gruise Control
Component Location Index
MAIN SWITCHTesVReplacement,page 23-242CABLE REELReplacement, section 24
BRAKE SWITCH, fest, page 23-244. Pedal Height Adjustment,section 19CRUISE CONTROI. UNITInput Test, page 23-240
swrTcH {M/T). Test. page 23-244. Clutch Pedal Adjustment,section 12
atfSWTTCH. Test, page 23-154' Replac€ment, page 23-'155
ACTUATOR CABLEAdjustment, page 23-246
VACUUM TANK
TOR ASSEMBLY. Test, pag€ 23-245. Replacement, page 23-246. Solenoid Test, page 23-247' Disassembly, page 23-248
23-240

)
CavityWireTest conditionTest: Desired resultPossible cause if result is not obtained
BRNA/VHTUnder all conditionsCheck for resistance to ground:
There should be 80 - 120 O.
Fau lty actuator solenoid
Poor ground (G202)
An open in the wire
1BRNUnder all conditionsCheck for resistance to ground:
There should be 40 - 60 0.
11BRN/BLKUnder all conditionsCheck for resistance to ground:
There should be 70 - 110 0.
2GRY
lgn jtion switch ON (ll),
main switch ON and
brake pedal pushed,
then released
Check for voltage to ground:
There should be 0 V with the Pedal
pushed and battery voltage with
the pedal released.
'Faulty brake switch
. An open In the wlre
3BLKU nderall conditionsCheck for continuitY to groundl
There should be continuity
' Poor ground (G401, G402)
. An open in the wire
5GRNA,A/HT
Brake pedal pushed,
then released
Check for voltage to groundl
There should be batterY voltage
with the Pedal Pushed. and 0 V
with the pedal released
. Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
. Faulty brake switch. An open in the wire
LT GRN/
RED
Set button pushedCheck for voltage to ground:
There should be batterY voltage.
Blown No. 52 (15 A) fuse in the
under-hood fuse/relaY box
Faulty horn relay
Faulty sevresume switch
Faulty cable reel
An open in the wire7LT GRN/
BLK
Resume button Pushed
10RED/BLU
lgnition switch ON (ll)Attach to ground:
Cruise indicator light in the gauge
assembly should come on.
Blown bulb
Blown No. 25 (7.5 A) fuse in the
under dash fuse/relay box
Faulty dimming circuit in the
gauge assemDly
An open in the wire
BLU,A/VHT
lgnition switch ON (ll)
and main swilch ON;
raise the front of the
car, and rotate one
wheel slowly with the
other wheel blocked.
Check for voltage between the
BLUMHT @ and BLK O terminals:
There should be 0- 5 V or more
-0- 5 V or more repeatedlY
. Faulty vehicle speed sensor {VSS)
. An open in the wire
LT GRN
lgnition switch ON (ll)
and main switch ON
Check for voltage to ground:
There should be batterY voltage.
Blown No. 14 (7.5 A)fuse in the
under-dash luse/relaY box
Faulty main switch
An open in the wire
14PNK
A,T: Shift lever in E,
ojorE
M/T: Clutch pedal
released
Check for continuity to ground:
There should be continuity.
NOTE: There should be no conti-
nuity when the clutch Pedal is
depressed or when the shift lever
is in other positions.
Faulty A/f gear position switch
Faulty or misadjusted clutch
switch (M/T)
Poor ground (G401, G402)
An open in the wire
BLU/GRN
Under all conditionsCheck for continuity between No. I
terminal and No. 5 terminal of the
PCM connector A.
There should be continuity
. An open in the wire
*: '99 - 00 models with A,/Tl-,
23-243

Cruise Control
Brake Switch Test
1. Disconnect the 4P connector from the switch.
4P CONNECTOR
BRAKEPEDAL
Check for continuity between the terminals accord-
ing to the table.
Terminal
t"r. ** \
123
RELEASEDo---o
DEPRESSEDoo
3. lf necessary. replace the switch or adjust pedal
height (see sectionl9).
23-246
clutch switch Test (M/Tl
1. Disconnect the 2P connector from the switch.
swtTcH
2. Check for continuity between the terminals accord-
ing to the table.
Terminal
.***aal
-\I2
RELEASED
DEPRESSEDo--o
3. lf necessary, replace the switch or adiust pedal
height (see section '12).

Circuit Diagram
UNDER-HOOD FUSE/RELAY 8OXIGNITIONSWITCH
WHT/8LI( +WHT
Brake systsm light
passenger's airbag
l----ltlI DUMMY II BESISTOR I
tll
tl
la rl
MEMORY ERASESIGNAT IMES)CONNECTOR I2P)
GRY{GRN)
I
BRN BRN
tl.-l- .-r-\./ \./
ECM/PCM SERVICECHECKCONNECTOR
ILT 8LU
I
t'7
DATA LINKCONNECTOR{DLC) {r6P)
GRY GRY(GRN) IGNN)
V:
G801
Teminalside oi thal€ terminals
24-6
4''
SRS UNIT TERMINALSG40tG402
SBS INDICATOR CIRCUIT{ln the gauge assembly)
PGM_FI
DRIVER'SAIRBAGINFLATOR
10 14 r 13 6 7(VAl 3{VBlSRS UNIT16 17 t5 9 18 8