1998 HONDA INTEGRA Workshop Manual

J
Troubleshooting
Reference Chart
. Any abnormality must be corrected before continuing the test.. Because of the precise measurements needed, use a multimeter when testing.
Before performing any troubleshooting procedures check:. Fuses No, 56 (20 A), No. 57 (20 A) in the under-hood fuse/relay box, and No. 17 {7.5 A) in rhe under-dash fuse/relay box.. Grounds No. G401, G201, G151, G101. Cleanliness and tightness of all connectors
I'IT
I
I
SYMPTOMREMEDY
Radiator fan does not run at all.Perform the procedures in the flowchart {see page 22-8).
Condenser fan does not run at all,Perform the procedures in the flowchart (see page 22-1O1.
Both fans {radiator and condenser) do not
run for engine cooling, but they both run
with the IVC on.
Perform the procedures in the tlowchart (see page 22-12).
Both fans do not run at all.Perform the procedures in the flowchart (see page 22-13).
Compressor clutch does not engage.Perform the procedures in the flowchart (see page 22-14).
l'lc system does not come on
{compressor and both fans).Perform the procedures in the flowchart (see page 22-15).
22-7

Troubleshooting
Radiator Fan
RADIATOR FAN RELAY 4P SOCKET
El2F-lt--T-- |
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",-*rrro [--l .u^rrrr
E lw'RE
l2-
trI
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8LK BLK/RED
View from wire side\
Radiator lan does not run at all.
Chock the No. 57 (20 A) fuse in
the undeFhood fuse/relay box.
Remove the radiator tan relayfrom the under-hood fuse/rolaybox, and test it (see page 22-19).
Measuro the voltag€ betwogn theNo.2 terminal (+) and bodyground (-).
ls there battery voltage?
Connect the No. 1 and No. 2 ter-minals with a jumper wire.
Does the radiator fan run?
Check for continuity in the BLK/RED wire between the No. 1 ter-minal and the radiator fan.
Repair open in tho BLK/RED wir6b6twaon the undor-hood fuso/r6l6v box and the radirtorf6n.ls there continuity?
Check Ior continuity in the BLKwire between the radiator lanand body ground.
Chock for.n opon in tho BLKwiro botween tho .adiator fanand body ground, It tho wire i3OK, check for poor ground rtG201 and G401.
ls there continuity?
Roolace the radiator tan motor.
10 page 22-9
22-8

From page 22 8
RADIATORFAN RELAY
l-'--l
| 2 |
[T;]
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RELAY 4P SOCKET
Disconnect the,umper wire andturn the ignition switch ON (II).
Measure the voltage between theNo. 4 terminal (+i and bodyground ( ).
Ropair op€n in the GRN wire be-tween the undor-hood Iuse/.elay box and the A/C diode.
ls there battery voltage?
Repair open in the BLK/YEL wirebotwean the under-hood tuse/relay box snd the under-daahfuso/relay box,
22-9

Troubleshooting
Condenser Fan
0
Remove the condenser fan relayfrom the underhood fuse/relaybox, and test it (see page 22-19).
Roplaco the condenser fan rgley.
Measure the voltage between tlieNo. 2 terminal {+) and bodyground (-).
Connect the No. 1 and No. 2 ter-minals with a jumper wire.
Does the condenser fan run?
Check for continuity in the BLU/BLK wire between lhe No. 1 ter'minal and the condenser fan.
Ropair open in the BLU/BLK wir.between tho undor-hood fu3e/relay box and lh€ condan3er fan.ls there continuity?
Check for continuity in the BLKwire between the condenser fanand body ground.
Check tor an ooen in the BLKwir6 betwoen the condan3er fanand body ground. lf the wire isOK, check for poor ground atGr51.
ReDlace the condenser fan motor,
CONDENSER FAN RELAY 4P S(rcKET
ls the relay OK?
YES
RoDlace the undor-hood tuse/r€lay box.JUMPERWIRE
To page 22 11
',,/-i, /
cr-i,
View from wire sideq
BI-U/BLX
22-

Disconnect the jumper wire andturn the ignition switch ON (ll).
Measu16 tho voltagg botween theNo.4 terminal {+) and bodyground (-),
R.prir op.n In th. BLK/YEL wir.batwaen tha undar-hood fuaa/ral.y box and tho undar.daahfuro/rclay box.
R€move the A,/C diode from thsund6r-hood tuso/relav box.
ls the A,/C diode OK?
R.prir op.n in tha BLU/YEL wir.batw..n th. und.r.hood tu../rol.y box .nd th. A/C dlod..
From page 22-10
CONDENSER FAN RELAY IP SOCKET
I
22-1

Troubleshooting
Engine Coolant Temperature(ECT}Switch
Both fans (radiator and con-denserl do not run for enginecooling, but they both run withthe A,/c on.
Disconnect the engine coolanttemperature lECT) switch 2P con
Turn the ignirion switch ON ( ll).
Measure the voltage between theGRN wire terminal (+) and bodyground (-)-
Repair open in the GRN wire b€-tween the ECT switch and theunder-hood luse/rel6v box,ls there battery voltageT
Turn the ignition switch OFF andcheck for continuity in the BLKwire between the ECT switch andbody ground.
Check for en ooen in the BLKwire between the ECT switchand body ground. ll th. wire isOK, check lor poor ground atG101.
ls there continuity?
Check the temperature gauge.
Does it read above normal?
View from wire side
GRN (+)

BothFans
)
Eoth lans do not run et all.
Removo the A,/C diode from theunder-hood fuse/relay box.
ls the IVC diode OK?
Repeir open in the BLU/RED wirebetween the A/C diode and theA/C Dr€ssure swhch.
22-13

Troubleshooting
- Compressor
Remove the compressor clutchrelay trom the unde.hood tuse/relay box, and test it {see page
22-19t.
Measure the voltage beNveen theNo.2 terminal (+) and bodyground (-).
ls there battery voltage?
Connect the No. 1 and No. 2 terminals with a jumper wire.
Discon nect the compressorclutch 1P conoector.
Check lor continuity in the REDwire betlveen the No. 1 terminaland the compressor clutch.
Reprir open in tha BED wirabotwoon th6 undar-hood fusc/rolay box and lhs comp.osrorclutch.
In3p6ct th€ compre3sor clulchclear'nc€ and the comDressorcfutch ti€fd coil (se€ ptge22-321.
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COMPRESSOR CLUICH RELAY 'P SOCKET
JUMPERWIRE
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To page 22-15
22-14
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