dtc HONDA CIVIC 1998 6.G Workshop Manual

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(From page 19-64)
Check tor chipped pulser gear.
Replace the drivesh.tt or hubunil. (Chipped pulser g€ar)
DTC 11, 13, 15. 17: Roplace theABS control unil.OfC 12, 11.16, 18: The ABS con-trol unit may have detected sig-naldisturbance.
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19-65

Troubleshooting
Solenoid
Diagnostic Trouble Code {DTC} 31-38: Solenoid Diagnosis
YES
ABS CONTROL UNIT 22P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 26P CONNECTOR
FL.OUT (YEL/ALK)- With the ignition switch ON(lll, ABS indicator light doesnol go oft. or ABS indic.to.light comes on while ABS i3functioning.- With the SCS servico connec-tor connected ls€. pag€ 19-561,DTCa 31-38 are indicstod.
Check for a short lo powor in thosol6noid circuitl1. Disconnect the ABS controlunit 22P and 26P connectors.2. Sta rt the engine.3. Measure the voltage betweenthe ABS control unit connectorappropriate solenoid circuitterminal* and body ground.
Ropri. short to powor in thcappropriate solanoid ci.cuit wirobotw6.n ths ABS cont.ol unitand modulrtor unit.
ls there battery voltage?
Check for a short to body groundin the 3olenoid circuit:Check tor continuity between theappropriate solenoid circuit termi-nal* and body ground.
. Repair short to body ground inlhe .ppropriato solonoid circuitwire betwoan th6 ABS controlunit and modllato. unit.. Replaco the modul.tor unit.
Check th€ ABS control unit:'1. Turn the ignition switch OFF.2. Connect the ABS control unit22P and 26P connectors.3. Connect the SCS service con-
4. Turn the ignition switch ON {ll}.5. Measure the voltage betweenthe ABS control unit 26P con-nector appropriate CONI circuitterminal++ and body ground.
Check for loos€ ABS control unhconnectora. It naceslrry, aub3ti-tutc . known-good ABS controlunit tnd recheck.
ls there approx. 3 V?
DTCAppropriateConnectorAppropriateTerminal
31: FRJN22PNo. 1
32: FR-OUT22PNo.12
33i FL'IN22PNo. 11
34: FL OUT22PNo.10
3s: RRIN26PNo.13
36: RR-OUT22PNo. 21
37: RLIN26PNo.25
38: RL-OUT26PNo.12RL.OUT IYEL}
Wire side of female terminals
DTCAppropriateTerminal
31: FR-lNNo. 2: SCOM
32: FR-OUTNo. 2: SCOM
33i FLINNo. 1: rcOM
34: FL-OUTNo. l: PCOM
35: RR{NNo.1:PCOM
36: RR-OUTNo. 1: rcOM
37rRL'lNNo. 2: SCOM
38: RL-OUTNo. 2: SCOM
RL.OUT (YEL}
19-66
(To page 19-671

(From page 19 66)
Check tor an op€n in th€ solenoidcircuit:Measure the voltage between theABS control unit connector appro-priate solenoid circuit terminal*and body ground.' Repsir opon in the appropriateCOM circuit wiro botwoon theABS control unit and modulatolunit.' Repair open in ihe appropriatesol€noid ci.cuit wiro betweentho ABS control unit and modu-lator unit.. Roplaco the modulator unil.
ls there approx.3 V?
Check loi loGe ABS control unitconnoctors. It necessarv, substi-tute a known-good ABS controlunit and recheck.
te
ABS CONTROL UNIT 22P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 25P CONNECTOR
\J
FL.OUT {YEL/BLK}DTCConn€clorTerminal
31: FB-lN22PNo. 1
32: FR'OUT22PNo. 12
33: FL IN22PNo.1l
34: FL-OUT22PNo. 10
35: BR-lN26PNo. 13
36: RR-OUT22PNo.2l
37: BL-lN26PNo. 25
38:8I-OUT26PNo. 12
BL.OUT (YELI
Wire side of female terminals
19-67

Troubleshooting
ABS Pump Motor
Diagnostic Trouble Codo {DTC} 51-53r ABS pump Motor Diagnosis
YES NOTE: Short the PMR terminat to body
NOTE: Reinstall ground for a moment, and recheck the fuse.
the fuse if it is OK lf the fuse is blown, check for a short to bodyground in the MCK circuit.
AAS CONTNOL UNIT 22P CONNECTOR
7At0tl
1211192l22
PMR IYEL/RED} I JUMPERI WIRE
Wire side of female terminals
NO
NO
YES
NOTE: Reinstallthe fuse if it is OK.
NOTE: Short the PMF terminal to booyground for a moment, and recheck the fuse.lf the fuse is blown, check for a short to bodyground in the wire between the under-hoodABS luse/relaV box and pumD motor.
- With the ignition switch ON(ll), ABS indicator lighr doosnot go otf.- With tho SCS s€rvico conneetor conn€cted lsee page 19661,OTCa 51-53 aro indicated.
Check the MTR CHECK (7.5 A) fuse.
Repl.ce the fuse .nd recheck.
Replaco tho tuse and rocheck.
Rcphce th€ pump motor rol6y.
Check the pump motor powersource circuit:Turn the ignition switch ON (ll).
Ch€ck for a short to !'ows. in thopumP motor power 3ource ciacrrit:Remove th6 purnp motor relay,
Does the pump motor operate?
Bopair sho.t to powsr in the wir€botwoen the under-hood A8Stuse/.elay box and ABS pumpmotor.
Does the pump motor operate?
Check tor loGe ABS control unitconnoctors. lf nocessary, substi-tute a known-good ABS controlunit and roch€ck,
(To page 19-69)
19-68

tfMain Relay
Diagnostic Trouble Code {DTC} 54: Msin Relay Diagnosis
YES
NOTE: Reinstallthe fuse if it is OK.
ABS CONTROL UNIT 26P CONNECTOR
Wire side of female terminals
ABS CONTROL UNIT 22P CONNECTOR
B1{WHT/GRNI
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PCOMIGRN/WHT}scoM{BLK/WHTI
(cont'd)
19-71
Wire side of female terminals
- With the ignition switch ON
{ll), ABS indic.tor light doesnot go off.- With the SCS 3ervica connoc-
tor connected (s€e pag€ 19-561,
DTC 54 is indicated.
checkthe ABS +B (20 Alfuse.
Replace th6 fuso and rechock.
Ch€ck for an op€n in the 81, 82
circuit:Measure the voltage betweenbody ground and the ABS control
unit 26P connector terminal No. '14
and No. 15 individually.
Repair open in the wire betweonthe ABS control unit and under-hood ABS tuse/relav box.
Check for a short lo body ground
in the PMR circuit:1- Turn the ignition switch OFF.
2. Remove the pump motor relay.
3. Disconnect the ABS controlunit 22P connector.4. Check for continuity betweenterminal No. 19 and bodygrouno.
Repair short to body ground in
the wire between the undor-hood ABS fuse/relay box andABS control unit.
ls there continuity?
Check tor a short to body ground
in the PCOM, SCOM circuit:1. Disconnect the ABS controlunit 26P connector.2. Check for continuity betweenbody ground and the ABS con-trol unit 26P terminals No. 1
and No.2 individually.
. Bepai. short to body ground in
tho PCOM circuit wire betwoenthe ABS control unit and under-hood ABS fu3e/.olay box.. Repair 3hort to body ground inthe PCOM or SCOM circuit wirebetween the ABS control unitand moduletor unit.. Rcplace th6 modulator unit.(Short circuit insido tho unit)
ls there continuity?
{To page 19 72)lr

lgnition Voltage
Diagnostic Trouble Code (DTC) 61: lgnhion Voltage Diagno3is
A8S CONTROL UNIT 26P CONNECTOR
IG2IBLK/BLU}
]Wire side of lemale terminals
- With tha engin€ running, ABSindicator lighl is ON.- With the SCS s€rvice connec-to. conn€ctod ls€€ page 19-561,DTC 61 is indicated.
Problem v€rification:1. Erase the DTC.2. Start the engine.3. Make sure that the ABS ind;cator light comes on and DTC61 is indicated.
ls DTC 61 indicated?The system b OK .t this time.
Check the lG2 cilcuii:Measure the voltage between theABS control unit 26P connectorterminal No. 3 and body ground.
ls there 18 V or above?
lf the vohage is 0 V, check lor anopon in the lG2 circuit.It there is 12 - 17 V. substitute aknown-good ABS colrtrol unit andJecheck.
It
19-73

Troubleshooting
Central Processing Unit (CPUI
Diagnostic Troublo Code IDTC) 81: CPU Disgnosis
- With the ignition switch ON{lll. ABS indicator light doesnot go oft.- With tho SCS servi@ connec-tor conn€cted lsee page 19{6},DTC 81 is indicated.
P.oblem vedfication:1. Erase the DTC.2. Test-drive the vehicle.3. Make sure that the ABS indi,cator light comes on and DTC81 is indicated.
ls DTC 81 indicated?R€pllc6 th. ABS control unh.
The system k OK rt this time.
19-74

Troubleshooting -'99 - 00 Models
Self-diagnosis Function
The heater control panel has a self-diagnosis function.
Running the Self-diagnosis Funqtion
Set the mode control dial to the Vent position, and turn the ignition switch ON fll). Within six seconds after turnang the igni_tion switch on. press the recirculation control switch the required number of times depending on the recirculation indicatorlight status:
.lftheindicatorlightisON,presstherecirculationcontrolswitchfivetrmes.
.lftheindicatorlightisOFF,presstherecirculationcontrol switch six rrmes.The recirculation indicator light will come on for two seconds. then blink the Diagnostic Trouble code {DTc} to indicate afaulty component. lf no DTc's are found, the indicator light will not blink after the initial two second liqht.
DTC Indication Pattern (S6e DTC 2l:
Recirculationindicato.light on
Recirculationindicatorlight off2 sec
,/1.5 soct
' 0,3 secWithin six seconds atter theignition switch is turned ON (lll,pross the recirculation controlswitch the required number ottimes depending on the rocircu-lation indicetor light status
0.3 sec
VENT POSITIONMODE CONTROL DIAL
RECIRCULATIONCONTROL SWTCH
DTC Troubleshooting Index
Diagnostic
trouble
code (DTCI
Rgcirculation
indicator lightComponent with problemPossible causeSee page
One blinkAir mix control motorObstructed door, laulty motor21-21
2Two blinksAir mix control motorOpen or short circuit21-23
ln case of multiple problems, the recirculation indicator light will indicate only one DTc with the least number of blinks.
Resetting the Self-diagnosis FunctionTurning the ignition switch OFF will cancel the self-diagnosis function, After completing repair work, run the setf diagnosisfunction again to make sure that there are no other malfunctions.
21-20
@
At
V'

Air Mix Gontrol Motor
Recirculation indicator light indicates Diagnostic Trouble code (DTC) 1l A problem in the air mix control linkage, door and
motor.
The air mix control motor regulates the mixture of cool/hot air according to outputs from the heater control panel'
Self-diagnosis circuit check indi'
cates a Problem in the air mix
conlrol motor circuit,
Check th6 aii mix conirol motor:
1. Disconnect the air mix control
motor 5P connector.
2. Test the air mix control motor(see page 21-46).
check the air mix control linkage
and doors:1. Remove the air mix control
motor (see Page 21-46)
2. Check the air mix control link-
age and doors lor smooth
movement.
ls the air mix control motor OK?
Do the air mix control linkage and
doors move smoolhlY?
R€olace the air mix control motor'
Check tor a short in the wiles:
1. Disconnect the heater controlpanel 20P connector-2. Check for continuitY between
body ground and the heater
control panel 20P connector
terminals No.3 and 4 individ'
uaIY.
Ropair any short in th€ wire{s}
betweon the heater control Paneland the air mix control motor'
HEATER CONTROL PANEL 2OP CONNECTOR
RED/WHTRED/YEL
Wire side ot female terminals
(cont'd)
fo page 21-22
21-21

RecirculationindicatorIightindicatesDiagnosticTroublecode(DTc)2:AprobIemintheairmixcontro|motorcircuit.
The air mix control motor regutates the mi)dure of cool/hot air according to outputs from the heater control panel'
Self-diagnosis circuit check indi-
crl6s a problgm in tho air mix
contiol motor circuit.
Check th6 rir mix control motor:
1. Disconnect the air mix control
motor 5P connector'
2. Test the air mix control motor(see page 21-46).
Check the air mix control linkage
and doors:1. Remove the air mix control
motor (see page 21'46).
2. Check the air mix control link-
age and doors for smooth
ls the air mix control motor OK?
Do the air mix control linkage and
doors move smoothlY?
Roglace the air mix conlrol motor.
Check for r short in the wiresl
1. Disconnect the heater controlpanel 20P connector.2. Check for continuity between
body ground and the heater
control panel 20P connector
terminafs No. 3,4. 12,15 a^d
20 individually
Bep.ir any short in the wire{s)
between the h€rter control panel
and th6 air mix control motor.ls there continuity?
HEATER CONTROL PANEL 2OP CONNECTOR
BEO/WHTREO/YEL
PNK/BLK
Wire side of female terminals
(cont'd)
Io page 21-24
21-23