page 176 HONDA CIVIC 1998 6.G User Guide

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Linear Solenoid
NOTE: Record all freeze data before vou troubleshoot,
Po$ible Caus6
. Disconnoctod lineaJ solonoidconnectot. Short or open in linoar solenoid
' Faulty linoar solonoidLINEAR
Terminal side ol male terminals
PCM CONNECTOR B I25PI
Wire side of female terminals
SOLENOID CONNECTOR
l;r]l
TT
YI
LI
REDWHT
OBO ll Scan Tool indicates CodeP176a.Self-diagnosi3 E indicatorlight indicates Code 16,
Measure Linear Solenoid Resist-ance at the Solenoid Connecto.:1. Turn the ignition switch OFF.2. Disconnect the 2P connectorlrom the linear solenoid connector,3. Measure the resistance ofthelinear solenoid.
ls the resistance approx. 5.0 O?
Check Linear Solenoid for a ShonCircuit:1. Disconnect the B 125P) connec-tor from the PCM.2. Check for continuity betweenthe body ground and the B1terminal and 82 terminal inda-vidually.
Repair short in the wires bgtwoenthe Bl and 82 terminab and thelineti solsnoid.
Meaaure Linoar Solenoid RGi3t-anc€:1. Connect the linear solenoidconnector.2, Meas u re the resistancebetween the 81 and 82 termi-nals,
Ropair looso terminal or open inthe wires botwe€n the 81 and 82telminals end the linear solenoid.
ls the resistance approx. 5.0 O?
To page 14-73
14-72

Electrical Troubleshooting ('96 - 98 Models)
Troubleshooting Flowchart - Lock-up Control System
NOTE: Record all freeze data before vou troubleshoot.
Possible Cause
Faulty Lock-up cont.ol system
NOTE: Do not continue with this troublesnoonnoother DTCS have been corrected.until the causes of any
. OBD ll Sc6n Tool indicatG Codem7{0.. Self-diagnosis E indicator lightindicates Code 40.
Check tor Another Code:Check whether the OBD ll scantool or the E indicato, lightindicates another code.
Perform lhe Troublo3hooiingFlowchart tor the indicatedCode(s). Recheck for cod. P07il0lilol aftor iroubl€3hooting.
Does the OBD ll scan tool orthe E indicator light indicateanother code?
Tast Line Pressure:Measure the line pressure (seepage 14-119 and 14-120).
Repair tho hydreulic aystem a3necessary {3ee page 14-119).
Replace the Lock-up ControlSolenoid Valve Assembly andR6check;1. Beplace the lock up controlsolenoid valve Ay'B assembly(see page 14-105).2. Turn the ignitaon switch OFFand reset the PCM by removing the BACK UP (7.5 A) fusein the underhood fuse/relaybox for more than 10 seconds,3. Using the scan tool, check tobe sure that the engine coolant temperature is in 176'F(80'C) and above.4. Drive the vehicle at 55 mph(88 km/h) constantly for morethan one minute.5. Recheck for code P0740 (40).
Does the OBD ll scan toolindicate code P0740 {40)?The systom k OK at this time.
l'.
14-74

Troubleshooting Flowchart - Linear Solenoid
NOTE: Record all freeze data before you troubleshoot.
Poitibl. Cau3.
. Disconnacted linoaJ tolanoidconnaclol. Shorl or opon in linolr solonoid
. Flulty linoar 3olenoid. ODon in VB SOL wit.. ODen in PG linoPCftI @NNECTORS
Wire side ol female terminals
PCM OONNECTOR B I25PI
LGT (BNN/BLKI LG2 {BBN/BLKI
Wir6 side of Iemale terminals
LINEAF SOITNOID OONNECTOR
Flr-11=T=T
olYI
L_l
Terminal side of mal€ termanals
(cont'd)
B t25Pl D {16P1
. OBD ll Scln Tool indic.t.t CodoP1768.. Self-diagnosis E indicltol indi-
cat6 Cods 16.
Moasur. VB SOL Voltago:1. Turn the ignition switch OFF.2. Disconnect the B {25P) and D(16P) connectors from thePCM.3. Turn the ignition switch ON (lll.
4. Measure the voltage between
the D5 and 820 or 822 termi-
nals.
Ropair opan or thort in dla wi.9hrw..n th. D5 t.rminrl .nd th.
und.r-d.rh fu ta/r.l.y box.
Ch.ck th. Ground Circuit:1. Turn the ignition switch OFF.2. Check lor continuity betwoenthe terminals 82 and 822 and
between terminals 810 and820.
Rapair opal| in tfr wi|! batlwaoth. tcrrnln.l. 82, B10, B:20. .ndBZI .id Gt01. R.p.ir poor ground
tG10rl.
M.!sure Linea. SolenoidRcai3tancc rt tha SolanoidConn6ctor:1. Disconnect the linearsolenoidconnectol,2. Measure the resistance of thelinear solenoid.
ls the resistance approx. 5 O?
To page 14-98
1+97

Troubleshooting Flowchart - Lock-up Control System
NOTE: Record all freeze data before vou troubleshoot.
Possibl€ Cause
Faulty Lock-up control sy3tem
NOTE: Do not continue with this troubleshootingother DTCS have been corrected.until the causes of any
OBD ll Scan Tool indicates Codem14/J.S€lf-diagnosis .D4l indicalor lightindicates Code 40.
Check for Another Code:Check whether the OBD ll scantool or the :E indicator lightindicates another code,
Perform the TroubleshootingFlowchart tor the indicatedCodels|. Rocheck to. code P0740(40) .fter troublBhooting.
ooes the OBD ll scan tool orrhe E indicator light indicateanother code?
Test Line Pressure:Measure the line pressure (see
page 14 119 and 14-120).
Repair the hydrrulic sy3tem asn6c6ssary (see page 14-1191.ls the lane pressure within theservice limit?
Replace the Lock-up ControlSolenoid Valve Assembly andRecheck:1. Replace the lock-up controlsolenoid valve A/B assembly(see page 14-105).2. Turn the ignition switch OFFand reset the PCM by removing the EACK UP (7.5 A) fusein the underhood {use/relaybox for more than 10 seconds.3. Using the scan tool, check tobe sure that the engine cool-ant temperature is in 176'F(80'C) and above.4. Drive the vehicle at 55 mph(88 km/h) constantly for morethan one minute,5. Recheck for code P0740 {40).
Does the OBD ll scan toolindicate code P0740 (40)?The svstem i3 OK .t this time.
14-99