Relays
Test
There should be continuity between the No. 1 and No.3
terminals when power and ground are connected to the
No. 2 and No. 4 terminals, and there should be no conti-
nuity when power is disconnected.
3
o Blower motor relay
. Blower motor high relay
,I It)
In P
I)
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 oower is disconnected.
Rsdiator fan relay
Condenser fan relay
Compressor clutch relay
a
a
.I I
tr€
II
F)'"
,2-4.._.
22-45
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A/C Service Tips and Precautions
The air conditioner system uses HFC-'134a (R-134a) refrigerant and polyalkyleneglycol {PAG) refrigerant oil*, which are not
compatible with CFC-12 (R-12) refrigerant and mineral oil. Do not use R-12 refrigerant or mineral oil in this system, and do
not attempt to use R-12 servicing equipmenu damage to the air conditioner system or your servicing equipment will
resutr.
*KEIHIN SP-10:
. P/N 38897 - Pl3 - A01AH: 120 m{ (4 fl.oz, il.2 lmp.oz)
. P/N 38899 - Pl3 - A01: 40 mf 11113tl.oz,1.4 lmp.oz)
Use only service equipment that is U.L.-listed and is certified to meet the requirements of SAE J2210 to remove R-134a
from the air conditioner system,
CAUTION: Exposure to air conditioner refrigerant and lubricant vapor or misl can irritats eyes, nose and throat. Avoid
breathing the air conditioner refrigerant and lubricant vapor or mist,
lf accidental system discharge occurs, ventilate work area before resuming service.
R 134a service equipment or vehicle air conditioner systems should not be pressure tested or leak tested with compressed
air.
E@ Some mixtures of air and R-13,1a have been shown to be combustible at elevat€d pressures and can result
in fire or explosion causing iniury or property damage. Never use complessed air to pressure test R-l3,[a service equip-
ment or vehicle air conditioner systems.
Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.
1. Always disconnect the negative cable from the battery whenever replacing air conditioning parts.
2. Keep moisture and dust out of the system. When disconnecting any lines, plug or cap the fittings immediately; don't
remove the caps or plugs until just before you reconnect each line.
3. Before connecting any hose or line. apply a few drops of refrigerant oilto the O-ring,
4. When tightening or loosening a fitting, use a second wrench to support the matching fitting.
5. When discharging the system, use a R l34a refrigerant recovery/recycling/charging station; don't release refrigerant
into the atmosphere.
6. Add refrigerant oil after replacing the following parts.
Note these items when handling refrigerant oil:
o To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refriger-
ant oils.
. lmmediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
. Do not spill the refrigerant oil on the vehicle; it may damage the painu if the refrigerant oil contacts the paint, wash
it off immediately.
Condenser . 25 ml (5/6 tl.oz, 0.9 lmp.oz)
Evaporator.,................................40 m/ 11 113ll.oz,l.4 lmp.ozl
Line or hose ........... 10 ml (1/3 fl.oz, 0.4 lmp.oz)
Receiver/Dryer....... 10 ml (1/3 fl.oz, 0.4 lmp.oz)
Leakage repair............................ 25 m/ (5/6 ll.oz, 0.9 lmp.oz)
Compressor.......,..., For compressor replacement, subtract the volumg ol oil drained from the removed
compressor from 130 m{ (4 113 tl.oz, 1,6lmp.ozl, and drain the calculatsd volume of
oif from the now comprossor: 130 ml (,1 113 tl,oz, 1.6lmp'ozl - Volume of removed
compressor = Volume to drain from new compressor.
NOTE: Even if no oil is drained trom the removed compressor, don't drain more than
50mt 11 213ll,oz,1.8 lmp.oz) from the newcompressor.
22-54I
rso m r rr:0.o., r.s r-o.o.t
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A/C System Torque Specifications
EVAPORATOR
SUCTION LINE
SUCTION HOSE
RECEIVER LINE ARECEIVEN LINE B
RECEIVER/ORYER
O Discharge hos€ to the compressor {6 x 1.0 mml.... 9.8 N.m 11.0 kgrf.m.7.2lbtftl
@ Condenser line to the condenser (6 x 1.0 mm)
@ Condensor line to the receiver/dryer {6 x 1.0 mm) ........9.8 N.m {1.0 kgf.m, 7.2 lbt.ft)
O Receiver line A to the receivor/dryer (6 x 1.0 mm) ...... ....................... 9.8 N.m {1.0 kgf.m.7.2 lbf.ft}
@ Receiver line B to th€ receive. line A
O R€ceiver tine C to the receivor line B
@ Recoiver line C to the evaporator (6 x 1'0 mml9.8 N'm (1.0 kgf.m,7.2lbtftl
O Sustion line to the evaporatot 16 x 1.0 mml
@ Sustion line to the suction hose...... 31 N.m (3.2 kgl.m, 23 lbf.ft)
@ Sucion hose to the qompressor (6 x 1.0 mm) .....'...' 9 8 N'm (1 0 kgt'm, 7'2 lbf'ftI
@ Compressor to the compressor bracket {8 x 1.25 mm) ... 24 N.m l2.il kgf'm, 17 lbf'ft}
@ Compressor bracket to the cylindsr block (10 x 1.25 mm) ................ ......... il,t N'm (4.5 kgt'm, 33 lbf'ft)
@ ldler pulley bracket to the compressor bracket (10 x 1.25 mm)..................... ,14 N.m (/r.5 kgf'm, 33 lbf'ft)
@ Lock nut of the sdiusting boh to the compressor bracket ......................... 24 N'm (2./t kgt'm, 17 lbf'ft)
@|d|erpu||eytotheid|orpu||eybracket.....'..........................'....\
.'.....'........'....44N.m(4.5kg''m'33|bf.f)
@ compressor bracket to the left front mount (12 x 1.25 mml ................... ............................ 59 N'm (6.0 kgt'm, /l:| lbf'ft1
22-55
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A/C System Service
Pressure Test Chart
NOTE: Performance Test is on page 22-56.
Test resultsRelatad symptomsPrcbable caus€Remody
Discharge (high)pressure 6bnormallyhagh
After stopping compressor, pressuredrops to about 200 kPa 12.0 kgtlcm,,28 psi) quickly, and then lalls gradualty.
Air in systemDischarge, evacuate, and rechargewith specified amount.Evacuation: see page 22-60Charging: see page 22-61No bubbles in sight glass whencondenser is cooled by waterExcessive refrigerant in systemDischarge, evacuate, and rechargewith specilied amount.Reduced or no air flow throughcondenser. Clogged condenser or radia-tor fins. Condenser or radiator fannot wo.king properly
CleanCheck voltage and fan rpm.Check fan direction.
Line to condensor is excossivelv hot.Restricted flow of relrigerant insy$emFestricted lines
Discharge pressureabnormally lowExcessive bubbles in sight glass;condenser is not hot.Insufficient retrigerant inCheck for leak.Charge system.High and low pressures are balancedsoon after stopping compressor. Lowside is higher than normal.
. Faulty compressor discharge
. Faulty compressor seal
Replace the comprossor.
Outlet ot expansion valve is notfrosted, low-pressure gauge indicates
' Faulty expansion valve. Moisture in system. Replace. Discharge, evacuate, andrecharge with specified amount.Suction {low) pros,sure abnormallyExcessive bubbles in sight glass;condenser is not hot.Insufficiont relrigerant inRepair the leaks.Discharge, evacuate, andrecharge with specified amount.Charge as r€quired.Expansion valve is not frosted, andlow-pressure line is not cold. Low-pressure gauge indicates vacuum.
' Frozen expansion valvelMoisture in system). Faulty expansion valve
. Discharge, evacuate, andrecharge with specitied amount.. Replace th€ expansion valve.Discharge temperature is low, and theair llow trom vents is restricted.Frozen evaporatorRun the fan with compressor off,then check evaporator tempera,ture sensor.Expansion valve is frosted.Clogged expansion valveClean or replace.Feceiver/dryer outlet is cool, and inlotrs w6rm (should be warm duringoperation).
Clogged receiver/dryerReplace
Suction pressureabnormally highLow-pressure hose and check joint arecooler than tho temperature aroundevaporator.
. Expansion valve open too long. Loose expansion capillarytube
Repair or roplace.
Suction pressure is lowored whencondenser is cooled by water.Excessive refrigerant in systemDischarge, evacuate, and rechargewath specified amount.High and low-pressure are equalizedas soon as tho compressor is stopped,and both gauges tluctuate whilerunning.
Faulty gasketFaulty high-pressure valveForeign panicle stuck in high-
Replace the compressor.
Slction and dis,charge pressutesabnormally high
Reduced air flow through condens€r,. Clogged condenser orradiator tins. Condenser or radiator fannot working properly
CleanCheck voltage and fan rpm.Check Ian direction.
No bubbles in sight glass whencondenser is cooled by walerExcessive refrigerant jn systemDischarge, evacuate, and rechargewith specified amount.Suction and dis-charge pressureabnormally low
Low-pressure hose and motalendareas are cooterlhan evaporator.Clogged or kinked low-pressure hose pansRepair or replace.
Temperature around expansion valvers too low compared with that aroundClogged high-pressure lineRepair or replace.
Refrigerant leaksCompressor clutch is diny.Compressor shaft seal leakingReplace the compressor.Compressor boltls) are dirty.Leaking around bolt(s)Tighton bolt{s) or replacecompressor.Compressor gasket is wet with oil.Gasket leakingReplace the compressor,
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Compressor
Replacement
lf the compressor is marginally operable. run the
engine at idie speed, and let the air conditioner
work for a few minutes. then shut the engine off.
Disconnect the negative cable from the battery.
Recover the refrigerant with a recovery/recycling/
charging station (see page 22-59).
Disconnect the condenser fan connector. Remove
the compressor clutch connector and the wire har-
ness clip from the condenser fan shroud, then dis-
connect the compressor clutch connector. Remove
the mounting bolts and the condenser fan shroud,
CONDENSER FANCONNECTOR
6x1.0mm7 N.m 10.7 kg{.m, 5 lbl.ftl
'L
2.
5. Remove each bolt, then disconnect the suction and
discharge lines from the compressor. Plug or cap
the lines immediately after disconnecting them to
avoid moisture and dust contamination,
6x1.0mm9.8 N.m 11.0 kgf.m,7.2 lbf.ft)
DISCHARGE LINE
Remove the power steering pump belt (see section
17t.
Loosen the pivot bolt of the idler pulley bracket and
the adiusting bolt, then remove the Ay'C compressor
belt from the pulleys. lf necessary, remove themounting bolts from the left front mount, thenremove the A,/C compressor belt through the gap
between the bodv and the left front mount.
6.
7.
PIVOT BOLT10 x 1.25 mmAIUUSTING 4,t N.m (4.5 kgf.m, 33 tbf.ftlt€FTFRONTMOUltlT
10x 1.25 mm COMPRESSOR/t4 N.m (4.5 kgl.m,33 lbtftl BELI
LINE
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Gondenser
't.
Replacement
Recover the refrigerant with a recovery/recycling/
charging ststion (see page 22-59)
Remove the front grille (see section 20).
Remove the coolant reservoii, but do not discon-
nect the reservoir hose Jrom the coolant reservoir
and the radiator.
Remove the bolts and the suction line bracket as
shown. Remove the bolts and the upper mount
brsckets from the radiator.
UPPER MOUNTBRACKETS
Remove each bolt, then disconnect the discharge
and condenser lines from the condenser, Plug or
cap the lines immediately after disconnecting them
to avoid moisture and dust contamination.
6x1.0mm9.8 N.m 11,0 kgf.m, 7.2 lbfttl
t\,l/
ait- -:
i..
6x1.0mm
6xl.0mm9,8 N.m 11.0 kgf'm' 7.2lbf'ft)
22-70
DISCHARGE LINE
CONDENS€R LINE
6. Remove the mounting bolts, then remove the con-
denser by lifting it up as shown. Be careful not to
damage the radiator and condenser fins when
removing the condenser.
Install in the reverse order of removal. Make note of
the following items.
. lf you're installing a new condenser, add refriger-
ant oil (sP-10) (see page 22-54]..
o Replace the O-rings with new ones at each fit-
ting, and apply a thin coat of refrigerant oil
before installing them. Be sure to use the right
O-rings for HFC-134a (R-134a) to avoid leakage.
. Be careful not to damage the radiator and con-
denser fins when installing the condenser.
. Be sure to install the lower mount cushions of
condenser securely into the holes,
. Charge the system (see page 22-61), and test its
performance (see page 22-56).
7.
1,0 mm
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Gonnector ldentification and Wire Harness Routing
Engine Compartment Wire Harness
Connector ol
Terminal
Number of
CavitiesLocationConnects toNotes
c20'l
c202
c203
c204
c205
c206
c207
c208
c209
c210
c212
c213
c2't4
c215
c216
c217
c21A
c218
14
2
2
1'l
2
10
Left side of engine compartment
Left side of engine compartment
Behind front bumper
Behind right headlight
Behind front bumper
Behind right headlight
Left side of engine compartment
Left side of engine compartment
Left side of engine compartment
Behind left headlight
Left side of engine compartment
Behind front bumper
Behind front bumper
Right side of engine compartment
Behind right headlight
Behind right headlight
Behind right headlight
Right side of engine compartment
Right side of engine compadment
Main wire harness (C307)
Cruise actuator
Rear window washer motor
Left front turn signal/side marker lights
Windshield washer motor
Left front parking light
Condenser fan motor
Front fog lights
IVC compressor clutch
Left headlight
IVC pressure switch
Left horn
Right horn
Radiator fan motor
Right headlight
Right front turn signal/side marker
lights
Right front parking light
Main wire harness 1C357)
Main wire harness (C357)
Optional
'97 - 98
models'99 - 00
mooets
G201
G202
Right side of engine companment
Left side of engine compartment
Body ground, via engine compartment
wire harness
Body ground, via engine compartment
wire harness
23-16
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Power Distribution
Fuse-to-Gomponent(sl Index (numerical sequence)
Under-hood Fuse/Rolay Box:
41
43
44
46
47
48
49
50
52
Capacity
'100 A
40A
7.5 A
15 A
40A
7.5 A
30A
204
204
15 A
10A
40A
40A
204
20A
Capacity
40A
204
7.5 A
wiro ColorFuseCircuit(s) Prot€cted
A
lgnition switch (BAT)
lntegrated control unit
Ceiling lights
Spotlights
PGM-Fl main relay
Not used
No. 7, 8, 10, 11 fuse in the under-dash fuse/relay box
Audio unit
Clock {'98 - 00 models)
Data link connector ('98 - 00 models)
ECM (VBU) {'98 - 00 models: M/T)
Heater control panel
PCM (VBU) (A./T)
Combination light switch (via under-dash fuse/relay box)
No. 20, 33 fuse in the under-dash fuss/relay box
Not used
Rear window defogger (via relay)
Door lock control unit
Hatch glass opener solenoid
Keyless door lock control unit ('98 - 00 models)
Horn relay
Horns (via relay)
via brake switch:
ABS control unit
Brake lights
Cruise control unit
ECM ('98 - 00 models: M/T)
High mount brake iight
PCM (4./T)
Trailer lighting connector
Turn signal/hazard relay (via switch)
Option connector (+B)
No. 6 fuse in the under-dash fuse/relay box
Blower motor (via relay)
Condenser fan motor (via relay)
Ay'C compressor clutch (via relay)
Radiator fan motor (via relay)
Wire Color Circuitls) Protoct
53
54
50
WHT/BLK
WHT/RED
WHT/BLK
WHT/BLU
WHT/BLU
WHT
WHT/GRN
WHT/GRN
WHT/GRN
WHT/BLK
WHT/RED
BLU/WHT
WHT
RED
BLK/RED
Under-hood ABS Fuss/nehy Box:
Fusg
61WHT
WHT/GRN
BRN/YEL
ABS pump motor {via relay}
ABS control unit
ABS control unit
{cont'd)
23-43
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