radio HONDA CIVIC 1996 6.G Workshop Manual

Troubleshooting
Troubleshooting Procedures (cont,dl
ll, Engine Control Module (ECM)/powertrain Control Module (pCM) Reset procedure
NoTE: Resetting the EcM/PcM will erase any stored DTcs and any freeze data. lt will also restart all readiness codemonitors.
Either of the following actions will reset the ECM/PCM.
. Use the OBD ll scan tool or Honda pGM Tester to clear the EClM,s/pCM,s memory.
NorE: see the oBD ll scan tool or Honda PGM Tester user's manuals for specific operating instructions.
' Turn the ignition switch oFF. Remove the BACK uP (7.5 A) fuse from the under-hood fuse/relay box for 10 sec-onds.
NorE: Bemoving the BACK uP (7 5 A) fuse cancels the clock and the radio presets. Make note of the customer,spresets so you can reset then
lll. Final Procedure (this procedure must be done after any troubleshoottng)
1. Remove the SCS Service Connector if it is connected.
NoTE: If the Scs service connector is connected and there are no DTcs stored in the EcMipcM, the MtL will stayon when the ignition switch is turned ON 0l).
2. Do the ECM/PCM Reset procedure.
3. Turn the ignition switch OFF.
1-82

Fuel Supply System
System Description
The fuel supply system consists of a fuel tank, in-tank
high pressure fuel pump, PGM-FI main relay, fuelfilter,
fuel pressure regulator, fuel injectors. and fuel delivery
and return lines. This system delivers pressure-regu-
lated fuel to the fuel injectors and cuts the fuel delivery
when the engine is not running.
Fuel Pressure l'96 Modelsl
Relieving
Before disconnecting fuel pipes or hoses, release pres-
sure from the system by loosening the 6 mm service
bolt on top of the fuel filter.
. Do not smoke whil6 working on the fuel system.
Kgsp opon flames or sparks away from youl work
area.
. Be sure to relieve fuel pressure while the ignition
switch is off.
1. Write down the frequencies for the radio's preset
buttons.
2. Disconnect the battery negative cable from the bat-
tery negative terminal.
3. Remove the fuelfill cap,
4. Use a box end wrench on the 6 mm service bolt at
the fuel filter while holding the special banjo bolt
with another wrench,
5. Place a rag or shop towel over the 6 mm service bolt.
6, Slowly loosen the 6 mm service bolt one complete
rurn.
. A fuel pressure gauge can be attached at the 6 mm
service bolt hole.
. Always reDlace the washer between the service
bolt and the special banjo bolt whenever the ser-
vice bolt is loosened.
. Replace all washers whenever the bolts are
removeo.
11-230
Inspoction
1. Relieve fuel pressure.
2. Remove the service bolt on the fuel filter while hold-
ing the banjo bolt with another wrench. Attach the
special tool.
FUELPRESSUREGAUGE07406 - 00ir0(x)1
Start the engine. Measure the fuel pressure with the
engine idling and the vacuum hose of the fuel pres-
sure regulator disconnected from the fuel pressure
regulator and pinched. lf the engine will not start,
turn the ignition switch ON (ll), wait for two sec-
onds, turn it off, then back on again and read the
fuel pressure.
Pr€3sure should bo:
260 - 310 kPa (2.7 - 3.2 kgt/cmr, 38 - 46 psi)
Reconnect vacuum hose to the fuel pressure regulator,
Pressure should bo:
200 - 25O kPa l2.O - 2.5 kgf/cm', 28 - 36 psil
lf the fuel pressure is not as specified, first check the
fuel pump {see page 11-2361. lf the fuel pump is OK,
check the following:
. lf the fuel pressure is higher than specified,
inspect for;- Pinched or clogged fuel return hose or line.- Faulty fuel pressure regulator (see page 11-234).. lf the fuel pressure is lower than specified, inspect
for:- Clogged fuelfilter.- Faulty fuel pressure regulator {see page 11-234).- Fuel line leakage.
REGULATOB

tJFuel Pressure {'97 and later Models)
ReliGving
Before disconnecting tuel pipes or hoses, release pres-
sure from the system by loosening the 12 mm banjo
bolt on top of the fuel filter.
@o Do not smoke whilo working on the fuel sy3lom.
Ksgp op€n flames or sparks away tlom Your work
arga.
. Be sure to relieve fuel pressule while the ignition
swhch is off.
1. Write down the frequencies for the radio's preset
buttons,
2. Disconnect the battery negative cable from the bat-
tery negative terminal.
3. Remove the fuel fill cap.
Use a box end wrench on the 12 mm banjo bolt at
the fuel filter while holding the fuel filter with anoth-
er wrench.
Place a rag or shop towel over the 12 mm banio bolt.
Slowly loosen the 12 mm banjo bolt one complete
turn.
4.
I
12 mm BAtt OBOLT33 N.m (3.i1 kgf m,25 tbf.f0
NOTE: Replace all the washers whenever the 12
mm banio bolt is loosened or removed.
Inspaqtion
1. Relieve fuel pressure.
2. Remove the 12 mm banjo bolt from the fuel filter
while holding the fuel Jilter with another wrench
Attach the special tools.
3. Start the enginethe fuel Pressure with the
engine idling and the vacuum hose of the fuel pres-
sure regulator disconnected from the fuel pressure
regulator and pinched lfthe engine will not start, turn
the ignition switch ON {ll), wait for two seconds, turn
it off, then back on again and read the fuel pressure'
Pr$3uro ehould be:
excepi 816A2 sngine:
260 - 310 kPa {2'7 - 3.2 kgf/cm" 38 - {6 Fi}
B16A2 engine:
27O -32O kPa P.8 - 3'3 kgf/cm', '10 - 47 psi)
4. Reconnect vacuum hoso to the fuel pressure regulator'
Pre33ure 3hould be:
except B16A2 engin€:
2OO - 250 kPa {2.0 - 2'5 kgf/cm', 28 - 36 psi)
B16A2 engino:
210 - 260 kPa 121 - 2.6 ksf/cm', 30 - 37 psi)
lf the fuel pressure is not as specified, first check the
fuel pump (see page 11-236) lfthetuel pumpisoK,
check tho following:
. lf the fuel pressure is higher than specified,
inspect for:- Pinched or clogged fuel return hose or line.
- Faulty fuel pressure regulator (see page 11-
2341.
. lf the fuel pressure is lower than specified, inspect
for:- Clogged fuel filter.
- Faulty fuel pressure regulator (see page l1-
2341.- Fuel line leakage.
FUEL PRESSUREADAPTER BOLT, 12 mm
tguxt8-PD6-0101
CLAMP
REGULATOR
11-231

Troubleshootin g Procedures
Chccking the Diagnostic Trouble Code IDTC)with an OBD ll Scan tool or Honda PGM Tester
when the PCM senses an abnormality in the input or output systems, the pl indicator light in the gauge assembly willblink. When the 16P Data Link Connector (DLC) (located under the dash on the driver,s side) is connected to the OBD llScan Tool or Honda PGM Tester as shown, the scan tool or tester will indicate the Diagnostic Trouble Code (DTC) whenthe ignition switch is turned ON{ll).
lf the El indicator light or the MIL has been reported on, or lf a driveability problem is suspected, follow this procedure:
1. Connect the OBD ll Scan Tool (conforming to SAE J19781 or Honda PGM Tester to rhe 16p DLC. (See the OBD ll ScanTool or Honda PGM Tester user's manual for specific instructions. lf you are using the Honda PGM Tester, make sure itis set to the SAE DTC type.)
2. Turn the ignition switch ON (lll, and observe the DTC on the screen,3, Record all fuel and emission DTCS, A/T DTCS, and freeze data.4 lf there is a fuel and emissions DTC, first checkthe fuel and emissions system as indicated bythe DTC (except for DTCP0700). DTC P0700 means there is one or more A,/T DTC, and no problems were detected in the fuel and emissions cir-cuit of the PCM.
5. Write down the radio station oresets.
6. Reset the memory with the PGM Tester or by removing the BACK UP fuse in the passenger's under-dash fuse/relay boxfor more than 10 seconds.
7. Drive the vehicle for several minutes at speeds over 30 mph (50 km/hr), and then recheck for DTCS. lf the A"/T DTCreturns, go to the Symptom-to Component Chart on pages 14-52 and 14-53 for'96 - 98 models, and pages 14-54 and14-55 for the'99 - 00 models, lf the DTC does not return, there was an intermittent problem within the circuit. Makesure all pins and terminals in the circuit are tight, and then go to step g.
8. Reset the radio preset stations, and set the clock.
OBD ll SCAN TOOL orHONDA PGM TESTER
DAYA LINK CONNECTOR {16P}
14-44

PCM Reset Procedure
1. Turn the ignition switch off.
2. Remove the BACK UP fuse (7.5 A) from the under-hood fuse/relay box for '10 seconds to reset the PCM'
NOTE:
. Disconnecting the BACK UP fuse also cancels the radio preset stations and clock setting Make note of the radio
presets before removing the luse so you can reset them
. in" gCfU memory can also be cleared by using the OBD ll Scan Tool or Honda PGM Tester'
Final Procedure
NOTE: This procedure must be done after any troubleshooting.
1. Turn the ignition switch OFF.
2. Reset the PcM.
3. Disconnect the oBD ll scan Tool or Honda PGM Tester from the Data Link connector, or remove the special tool from
the Service Check Connector.
4. Turn the ignition switch ON (ll), and set the radio presets and clock setting'
5'ToVerifytheprob|emisrepaired,test.drivetheVehic|eforseveralminutesatspeedsover30mph(48km/h).
14-51

Troubleshooting Procedures
l. How To Begin Troubleshooting
When the E indicator light has been reported on, use the appropriate procedure below to diagnose and repatr theproDlem.
A. When the @ indicator light has come on:
l connect the Honda PGM Tester or an oBD ll Scan Tool to the 16P Data Link Connector (DLc) located near the leftkick panel.
Turn the ignition switch ON (ll).
Check the DTC and note it. Also check and notethe freeze frame data.
Refer to the Diagnostic Trouble Code Chart andbegin troubleshooting.
INOICATORLIGHT
NOTE: SeetheOBDll Scan Tool or Honda PGM Tester user's manuals for specific operating instructions.
Some PGM-FI problems will also make the E indicator light come on. After repairing the pGM-Fl system, disconnect theBACK UP fuse (7.5 Al in the under-hood fuse/relay box for more than l0 seconds to reset the TCM or PCM memory, rnenrecheck.
NOTE: Disconnecting the BACK UP fuse also cancels the radio preset stations and the clock setting. Make note of theradio presets before removing the fuse so you can reset them,
2.
3.
o0\e--loo
OATA LINK CONNECTOB I16P}
14-234

ll. TCM Reset Plocedure
1. Turn the ignition switch off.
2. Remove the BACK Up fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the TCM or PCM.
NOTE:
. Disconnecting the BACK UPfuse also cancelsthe radio preset stations and the clock setting Make nole ofthe radio
presets before removing the fuse so you can reset them
BACK UPt7.s Al FusE
. The TCM or PCM can also be cleared by using the OBD ll Scan Tool or Honda PGM Tester'
DATA LINK CONNECTOR {16PI
lll. Final Procedut€
NOTE: This procedure must be done after any troubleshooting
'1. Turn the ignition switch off.
2. Reset the TcM or PCM.
3. Disconnect the OBD ll Scan Tool or Honda PGM Tester from the Data Link Connector (16P), or remove the special tool
from the Service Check Connector.
4. Turn the ignition switch ON (ll), and set the radio presets and clock setting.
OBD ll SCAN TOOL o.PGM TESTER
14-237

lf the self-diagnostic E indicator light does not blink. perform an inspection according to the table below.
SYmPtom
IDI indicator light does not come on for two seconds after ignition switch
is first turned ON (ll).
lE1 indicator light is on constantly (not blinking) whenever the ignition
switch is ON { ll).
InspectionRef. page
14-284
14-290
NOTE:
. lf a customer described the symptom for code Pl706 (6), it will be necessary to recreate the symptom by test driving,
then recheck the DTC.
. iometimes, tfre E indicator light and the Malfunction Indicator lamp (MlL) may come on simultaneously lf so, repair
the PGM-Fl system accordrng to the DTC, then reset the memory by removing the BACK UP RADIO fuse in the under-
hood fuse/relay box for more than 10 seconds. Drive the car for several minutes at a speed over 30 mph {50 km/h)' then
recheck the DTC.
14-241

Dashboard
Gomponent Removal/lnstallation
(cont'd)
Center panel removal:
1. Remove:
. Center dashboard lower cover (see page 20-69)
. Radio {see section 23)
2. Remove the rear window defogger switch and haz-
ard warning switch, then disconnect the connectors.
>: Screw locations, 5 >: Clip locationsA>,4 B>,3
fii*-)
CENTERPANEI.
rt-xR.
W
IHAZARDWARNINGswlTcH
r44 "
F.IZvl
IIREARwtNoowOEFOGGERswtrcH
MtxCONTNOLCABLE
3. Disconnect the air mix control cable, and remove the
screws, then pull out the center panel.
4. Disconnect the connectors from the heater control
u nit.
5. Installation is the reverse of the removal procedure.
NOTE:
. Make sure the connectors are connected properly.
. Adjust the air mix control cable (see section 21).
20-70
Removal
SRS components are located in this area. Review the
SRS component locations, precautions, and procedures
in the SRS section (24) before preforming repairs or ser-
vice.
NOTE:
. An assistant is helpful when removing and installing
the dashboard.
. Take care not to scratch the dashboard, body and
related parts.
1. Remove:
o Front and rear consoles (see page 20-67)
. Console panel (see page 2O 67),
. Driver's dashboard lower cover and knee bolster(see page 20-68)
. Glove box (see page 20-69)
. Center dashboard lower cover (see page 20-69i
2. Lower the steering column (see section 17).
@ To avoid accidental deplovment and
possible injury, always disconnect the driver's
airbag connector belore lowering the steering col-
umn lsee section 241.
NOTE: To prevent damage to the steering column,
wrap it with a shop towel.
3. Disconnect the dashboard wire harness connectors,
remove the nuts, then move the under-dash fuse/
relay box. Disconnect the antenna lead and moon-
roof relay connectors.
DASHBOARD cltPs
CONNECTORS(for some models)
MOONROOFRELAY
ANTENNALEAO
FRAME
SRS MAINHARNESS
9.8 N.m (1.0 kgf m,7.2lbt.ltl
DATACONNECTOR WIRE HARNESSDetach. CONNECTORS

Under-dash Fuse/RelaY Box
Removal/lnstallation
SRS components are located in this area. Review lhe
SRS component locations, precautions, and procedures
in the SRS section (24) before performing repairs or ser-
vice.
Removal:
1. Make sure you have the anti-lheft code for the radio
then write down the frequencies lor the radio's pre-
set buttons ('99 - 00 modelsl.
2. Disconnect the battery negative cable. then discon
nect the positive cable, and wait at least three min
utes,
3. Disconnect the airbag connectors (see section 24)'
4. Remove the driver's dashboard lower cover and
knee bolster (see section 20)
5. Remove the two mounting nuts, and pull the under
dash fuse/relay box out from under the dash'
6. Disconnect the connectors from the under-dash
fuse/relay box, and take out the under-dash fuse/
relay box (see section 24).
lnstallation:
1. Connect the connectors to the under-dash tuse/
relay box, then install the under dash fuse/relay box
in the reverse order of removal (see section 24)'
2. Install the driver's dashboard lower cover (see sec
tion 20).
3. Connect the airbag connectors {see section 24)
4. Connect the battery positive cable, then connect the
negative cable.
5. Enter the anti-theft code lor the radio, then enter the
customer's radio station presets ('99 - 00 models)'
6. Confirm that all sYstems work properly'
23-45