1998 ACURA INTEGRA Service Repair Manual

Mode Control Switch
Test
!;:l'#,",ion
contro,
m
lTit
l,
t'
,l
Switch
Test
Check for continuity between the terminals according to
the table below.
Terminal
Position56
Fresho1]
Recirculateo--o
Check for continuity between the termsssssafrinals according to
the table below.
Terminal
Position1237I
HeatG{
Heat/Defo-!
DefG-o
Go
Heat/Vent>'--o

Air Gonditioning
+Evaporator
Repf acement .........22-26
Overhauf ................22-27
Compressor
Description ............22-28
lf lustrated f ndex ............................... 22-29
Replacement .........22-30
Cf utch Inspection ....................... ...... 22-32
Cf utch Overhau1 ........................ ....... 22-33
Ref ief Vaf ve Replacement ............... 22-34
A/C Compressor Belt
Repf acement .........22-35
Adiustment ............22-36
Condenser
Repf acement .........22-37
A/C System Service
Evacuation .............22-38
Charging ................22-39
Leak Test ...............22-39
*: Read SRS precautions before working in
this area.

Special Tools
B€f. No. Tool NumborD€scriptionOty I Pago Roterencr
.o
@
07JGG - 001010A
07sAz - 0010004
Belt Tension Gauge
Backprobe Set
122-36
*lncluded in the Belt Tension Gauge Set. T/N 07TGG - 0010004
22-2

lllustrated Index
JSRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS
section (23) before performing repairs or service.
EVAPORATORReplacement, page 22,26Ove.haul. page 22-27
SERVICE VAI-VE
ILOW.PRESSURE SIDE)
SERVICE VALVE{HIGH.PRESSUEE SIDE}
SIGHT GLASS
CONOENSERReplacement, page 22 37
A/C PRESSURE SWITCHCOMPRESSOR
When the refrigerant pressure is below 200 kPa (2.0
kgllcm,, 28 psi) due to refrigerant leakage or above 3,'100kPa (32 kgtcm,,460 psi) due to relrigerant blockage, theA,/C pressure sw;tch opens the circuit to the A,/C switch andstops the air conditioning to protect the compressor.
page 22-30
22-3

Wiring/Connector Locations
A/C DIODE.BLOWER MOTOR BELAY,CONOENSER FAN RELAY.COMPRESSOR CLUTCH RELAY,RADIATOR FAN REI-AY(Located in the under-hood tuse/relay box)
A/C DIODECONNECTORlLocated above the right kick panel)
MAIN WIBE HARNESS
A/C WINE HARNESS
A/C WIRE HARNESS
A/C PRESSURE SWITCHCONNECTOR
CLUTCHCONNECTOR
22-4

Circuit Diagram
CONDENSERFANRELAY
!
BTKFED FEO
II
VIecu1xzrccl IT(l
tql
i.tli*, Tf7 r-
IBIU/RED
I-1
8LU/REO
.*.. *(if ) PRESSUFE
Y SWTCH
YEL/N4]T
lvcDIODE
- BLUiRED
I ,,,,^,-.,
IY
r.-'-"'-G8N
I,**',
Y ES:1i+31'
I
ts$'fts.,1
I
I
IBLK
I
G101
BLI(BED
I
I
I
,^r^r", IFANMoToRY
I
I
I
I8LK
T
G201G401
V
IBLU€LK
f7
IBLU/Y€L
V
IBLUMHT
V
IBLU
BLU/RED BLK,YEI
"fti.. i,, )
BLK
I
G151

Description
Outline
The air conditioner system delivers cooled air into the passenger companment by circulating retrigerant through the sys-
tem as shown below.
High-temperature/ H ig h-tem peratu rel Traps debris High-temperature/high-pressure gas high-pressure liquid and removes high-pressure liquidSuction and compression Radiation of heat moisture
covpnEsson -tl4con oetsen -rr{ REcEIvER/DRvER
More liqu idified
low-pressure vapor
Absorption of heat
Less moisturized
low-pressure vapor
EVAPORATOR -TEXPANS|ON VALVE
EVAPORATOR
CONDENSOR
This vehicle uses HFC-134a (R-134a) refrigerant which does not contain chlorofluorocarbons. Pay attention to the follow-ing service items:
. Do not mix refrigerants CFC-12 (R-12) and HFC-134a (R-134a). They are not compatible.. Use only the recommended polyalkyleneglycol (PAG) refrigerant oil (ND-OIL 8: P/N 38897-PR7-A01AH or 38899-PR7-A01) designed for the R-134a compressor. Intermixing the recommended (PAG) refrigerant oil with any other refriger-ant oil will result in compressor failure.
. All AVC system parts (compressor, discharge line, suction line. evaporator, condenser, receiver/dryer, expansion valve.O-rings for joints) have to be proper for refrigerant R-134a. Do not confuse with R-12 parts.
. Use a halogen gas leak detector designed for refrigerant R-134a.. R-12 and R-134a refrigerant servicing equipment are not interchangeable. Use only a Recovery/Recycling/ChargingSystem that is U.L.-listed and is certified to meet the requirements of SAE J2210 to service R-134a air conditioning sys-tems.
. Always recover the refrigerant R-134a with an approved Recovery/Recycling/Charging System before disconnectingany Ay'C fitting.
22-6

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