1998 HONDA INTEGRA ground

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 (+)

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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COMPRESSOR CLUTCH RELAY 'P SOCIGT
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ECM CONNECTOR A (32PI
BLK/f,ED
WIRE SIDE OF FEMALE TERMINALS
ECM CONNECTOR C {31P}
BLU/RED
Connect the backprobe adapters to the stacking patch cords, and connect the cords to a mul-timeter. Using the wire insulation as a guide lor the contoured tip oI the backprobe adapter,gently slide the tip into the connector trom the wire side until it comes in contact with the ter-minalend ofthe wire {see section l1).
From page 22-14
*How to use the backprobe sets
Turn the ignition switch ON {11}.
i/leasure the voltage between theNo. 4 wire terminal (+) and bodyground {-).
Rcp.ir opon in tho BLK/YEL wirobetwsen tha undor.dash tu3a/rehy box rnd the undor.hoodfw6/i6lry box.
Turn tho ignition switch OFF, andreinstall the compressor clutch
Make suro the !y'C and heater fanswitches are OFF.
Turn the ignition switch ON {l1).
Using a *Backprobe Set (T/N
07SAZ - 001000A), measure th€voltage between the No. 17 termi-nal oI the ECM connocror A (32P)
and body ground wirh the ECMconnectors connected.
R.pair op.n in tho BLK/R€O wirobgtweon thg undor-hood fu!a/relly box 6nd th. ECM.
Using a *Backprobe Set (T/N
07SM - 001000A), moasure thevoltage betwe€n the No. 5 termi-nal of the ECM connector C (31P)
and body ground with the ECMconnectors connected.
Ropair op6n in tho BLU/RED wircbctwccn tho A/C diodc rnd theECM,
Subiiituto . known-good ECMrnd rochock. lt symptom/indicr-tion 90o3 away, .6placc the origi-n.l ECM.
WIRE SIOE OF FEMALE TERMINALS
22-15

Troubleshooting
A/C System
I
A/C sy3tem doe! not coms on{cornDrcssor lnd bolh fan3),
Disconnect the A/C pressure
switch 2P connector.
Turn the ignition switch ON (ll).
Measure the voltage between theBLU/RED wire terminal (+) andbody ground {-).
Repeir opon in the BLU/RED wirobotwoon the A/C D.ossuro3witch and the A,/C diode.
Turn the ignition switch OFF.
Check for continuity between theNo. 1 and No. 2 torminals of theA,/C pressure switch.
Check for Ay'C system pressure.
Recon nect the A/C pressure
switch 2P connector.
Repbce the A/C pro$ur6 3witch.
View from wire side
YEL/WHTBLU/RED l+l
fo page 22-17
22-16
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JView from wire sideFrom page 22-16
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8LK/YEL l+)
YEL/WHT {+}
View from wire side
BLU/FED
(cont'd)
Turn the ignition switch ON {ll).
Measure the voltago between theBLK/YEL wire terminal (+) andbody ground (-).
Reprir opon in th€ BLK/YEL wir€batween the under-d.sh tuse/relay box rnd the A/C therm6tlt.
ls there battery vohageT
Moasure tho voltage between theYEL,A/VHT wire terminal (+) andbody ground (-).
Repair op6n in the YEL/WHTwire betwGen the A/C pressure
switch snd the A/C thermostat.ls th6re battery voltage?
Turn the ignition switch OFF.
Reconnect the A,/C thermostat 3Pconnector and connect the BLU/RED wire terminal to ground with
Do the radiator and con-denser fans run and thecompressor clutch engage?
Turn the ignition switch OFF anddisconnect the jumper wire.
To page 22'18
22-17

Troubleshootang
A/C System (cont'd)
8
Ftom page 22-17
Disconnect the heater controlpanel 'l4P connector.
Turn the ignition switch ON (ll).
Measure the voltage between theBLU/RED wire terminal (+) andbody ground (-).
Ropair open in the BLU/RED wirebetween the A/C thermostat andthe heater control Danel,
Turn lhe ignition switch OFF.
ls the PVC switch OKI
Disconnect the heater fan switch6P connector.
Check lor continuity in the GBNwire between the heater controlpanel and the he6ter fan switch,
Repair open in the GRN wire be-tween the hester control panel
and the heater fan switch.
Check for continuity in the BLKwire between the heater fanswitch and body ground.
Check for an ooen in the BLKwire between the hetter fanswitch and body ground. ll rhewire is OK, check for poorground at G401 and G402.
ls there continuity?
Reolace the heater fan switch.
Remove the heater control panel(see page 21-25).No.'11 BLU/RED {+)
View from wire side
View from wire side
22-1

A/G Thermostat
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Connect battery power to terminal C and ground termi-
nal B, and connect a test light between terminals A and
c.
NOTE: Use a 12 V, 3 W- 18 Wtest light.
Dip the Ay'C thermostat into a cup filled with ice water,
and check the test light.
The light should go off at 37'F (3"C) or less. and should
come on at 39'F (4"C) or more.
lf the light doesn't come on and go off as specified,
replace the Ay'C thermostat.
12V,3W-18W
ABC
Relays
Test
There should be continuity between the No.1 and No.2
terminals when power and ground are connected to the
No.3 and No.4 terminals, and there should be no conti-
nuitv when Dower is disconnected.
Radiator fan relay
Condenser fan relay
Ay'C compressor clutch relay
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ln P'Y )
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l--l''-u...r.
22-19

Compressor
a
a
Clutch Overhaul (cont'dl
Remove the screw from the field coil ground termi,
nal. Remove snap ring A with snap ring pliers, then
remove the field coil.
. Be careful not to damage the field coil and com-presso. during removal/installation.
. Once snap ring A is removed, replace it with a
SNAP RING AReplace.
5. Install in the reverse order of removal, andl
install the field coil with the wire side facing
down (see above).
clean the pulley and compressor sliding surfaceswith non-petroleum solvent.
check the pulley bearings for excessive play.
make sure the snap rings are in the groove prop-
efly.
apply locking agent to the threads of the center
bolt, and tighten it securely.
make sure that the pulley turns smoothly after
it's reassembled.
Relief Valve Replacement
Recover the refrigerant with Recovery/Recycling/
Charging System lsee page 22-221.
Remove the relief valve and the O-ring. Plug the
opening to keep foreign matter from entering the
system and the compressor oil from running out,
NOTE:
. Do not let the compressor oil run out.
. Make sure there is no foreign matter in the sys-
tem.
RELIEF VALVE13.2 N.m (1.35 kgf.m,9.76lbtft)
3. Clean the mating surfaces.
4. Replace the O-ring with a new one at the relief
valve, and apply a thin coat of refrigerant oil (ND-
OIL 8: P/N 38897-PR7-A01AH or 38899-PR7-A01)
before installing it.
5. Charge the system (see page 22-39), and test itsperformance (see page 22-241.
6. Check for leaks, and insert the cap in the top of the
FIELD
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22-34