Page 1093 of 1395
Component Location
lndex
EVAPORATORReplacement, page 22-48Overhaul, page 22-49
SERVICE VALVEILOW-PRESSURE SIDE}
CONDENSERReplacement, page 22-70
A/C PRESSURE SWTTCHWhen the refrigorant pressure is below 200 kPa 12.0 kglc.r|r,28 psi) or abov€ 3,200 kPa (32 kgflcmr, 455 psi), the AJC pressureswitch opens the circuit to the Ay'C switch and stops the airconditioning to protect the compressor.
Replacement, page 22-62Clutch Inspection, page 22-65Clutch Overhaul, pago 22-66Thermal Protector Replacement, page 22-68Relief Valve Replacem€nt. page 22-68
SERVICE VALVEIHIGH-PRESSURE SIDEI
,
[\,
-il
(cont'd)
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Page 1094 of 1395
Component Location
lndex (cont'dl
SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS
section (24) before performing repairs or service.
BLOWER UNITReplacement, page 22-46Ovethaul, page 22 47
/alowen ruoronl
\Test, page 22-16 /
EVAPORATORFeplacement, page 22-48Overhaul, page 22,49
RECIRCULATIONCONTROL MOTORReplacement, page 22 42
HEATER UNITReplacement, page 22 50Overhaul, page 22 52
lest, pag.e 22 42
A/C FILIERReplacement. page 22-50VALVE CABLEAdjustment, page 22-53
RECIRCULATIONCONTROL SWITCH
a/c swtTcH
MODEMOTOR
REAR WINDOWDEFOGGERSwlTCHSee section 23Replacement, page 22-41Test, page 22-41MODE CONTROLDIAL
HEATER CONTROLPANELReplacement, page 22 46
swtTcH
22-4
CONTROL
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Page 1095 of 1395
SLOWER MOTOR RELAY,RADIATOR FAN RELAY.CONDENSER FAN REI-AY,COMPRESSOR CLUTCH RELAY(Located in the undeFhood fuse/relay box)Test. page 22-45
CONDENSER FAN 2P CONNECTOB
RADIATOR FAN2P CONNECTORA/C PRESSURE SWITCH2P CONNECTOR
COMPARTMENTWIRE HARNESS
{cont'd)
1P CONNECTOR
22-5
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Page 1096 of 1395
Component Location
Index (cont'dl
SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS
section (24) before performing repairs or service.
BECIRCULATION CONTROL MOTOR4P CONNECTOR
EVAPORATOR TEMPERATURE SENSORTesl, page 22-44POWER TRANSISTOR3P CONNECTOR
AIR MIX CONTROL MOTORReplacement, page 22-43lest, page 22-13
BLOWER MOTOB2P CONNECTOR
BLOWER MOTOR HIGH RELAYTest, page 22-45
HEATER SUB.HARNESS
7P CONNECTOR
DASHBOARD WIRE HARNESS
HEATER CONTROL PANEL8P AND 2OP CONNECYORS
22-6
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Page 1097 of 1395
Description
The air conditioner system removes heat from the passenger compartment by circulating refrigerant through the systemas shown below.
High'temperature/ High-temperature/
high-pressure gas h igh-pressure liquid
Suction and compression Radiation of heat
High-temperature/
high-pressu re liq uidr raps oeons,
and removes
motsture
More liquidified
row-pressure vapor
EVAPoRAToR (-l EXPANSToN vAL
SUCTION LINEtLow-PRESSURE S|OEt
LIOUID LINE
CONDENSER
coMpREssoR Il- coruoerusenl* necetve
Less moisturized
low-pressure vapor
Absorption of heat
DISCHARGE LINEIHIGH.PRESSURE SIDEI
This vehicle uses HFC-I34a (R-l34a) refrigerant which does not contain chlorofluorocarbons. Pay attention to the follow-ing service items:
. Do not mix refrigerants CFC-12 (R-12) and HFC-l34a (R-134a). They are not compatible.. Use only the recommended polyalkyleneglycol (PAG) refrigerant oil (SP-10) designed for the R-134a compressor.Intermixing the recommended (PAG) refrigerant oil with any other refrigerant oil will result in compressor failure.. Afl Ay'C 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/charging stationthat is U.L.iisted and is certified to meet the requirements of SAE J2210 to service R-134a air conditioning system.. Always recover the refrigerant R-134a with an approved recovery/recycling/charging station before disconnecting anylVC fitting.
EVAPORAYOR
22-7
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Page 1099 of 1395
cnNj@_snN
GRY
PNK/BLK
NED/8LU
REO/YEL
YEL/BLU
8RN/WHT
GRNI/VHT
GRN/RED
POWERTRANSISTOR
c401c402
22-9
4
ORNMHT
Fg"{
EVAPONATORTEMPERATURE SENSOR
fi3'.Hfi|$l#i9D>
"'"-
DASH LTGHTS _/4EE|GHTNESS < l_ REDCONTROLLER -!
REAR
fllf$!S,* (l aLurrLRELAY
O:8P coNNEcToR
n :20P c0NN€CToR
YEL/RED
GRN/YEL
8LU/8LK
BRN
YEL
s5v s coM
AMD P AIR MIXCONTROLMOTOB
HOT
VENT
B/LI/lODEH CONT8OLl
10T0RH/D MDEF
HEATER CONTROL PANEI-
8LK
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Page 1100 of 1395
Troubleshooting
Symptom Ghart
For electrical malfunctions which are indicated by the self-diagnostic system, reter to selt-diagnosjs function (see next
page).
Note these items before troubleshooting a symptom.
. Check the engine coolant level, and allow the engine to warm up before troubleshooting.
. Anv abnormality must be corrected before continuing the test.
. Because of the precise measurements needed, use a digital multimeter with an output of 1 mA or less at the 20 kO
range when testing.
. Before performing any troubleshooting procedures check:
- Fuses No. 47 17.5 AJ, No. 55 (40 A), No. 56 (20 A), No. 57 (20 A) in the under-hood fuse/relay box, and No. 17 {7.5 A) in
the under-dash fuse/relay box.._ Grounds No. G101, G201, G202, G401, G4O2
- Cleanliness and tightness of all connectors
SymptomSse pags
Mode control motor does not run, or one or more modes are inoperative.
Recirculation control door does not change between Fresh and Recirculate.22-24
Radiator fan does not run at all (but condenser fan runs with the AVC on).
Condenser fan does not run at all {but radiator fan runs with the Ay'C on).22-29
Both fans (radiator and condenser) do not run for engine cooling. but they both run with the A,/C
on.
Both fans do not run with the Ay'C on22-33
Compressor clutch does not engage.22-34
AJC svstem does not come on (both fans and compressor).22-37
Both heater and A/C do not work,22-39
22-10
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Page 1102 of 1395
Troubleshooting
Air Mix Control Motor
Recirculation indicator light indicates Diagnostic Trouble Code (DTC) 1: A problem in the air mix control motor circuit.
The air mix control motor regulates the mixture of cool/hot air according to outputs from the heater control panel.
Selt-diagnosis circuit check indi-cates a Droblem in the air mixcontrol motor circuil.
Chock the air mix control moior:1. Disconnect the air mix controlmotor 5P connector,2, Test the air mix control motor(see page 22-43).
Check the air mix control linkagoand doors:1. Remove the air mix controlmotor (see page 22'43).2. Check the air mix control linkage and doors for smooth
ls the air mix control motor OK?
Do the air mix control linkage anddoors move smoothly?
Reolacelhe air mix conlrol motor.
Check Ior a short in the wires:1- Remove the heater controlpanel (see page 22-46).2. Check tor continuity betweenbody ground and the heatercontrol panel 20P connectorterminals No. 1, 6, 9, 17 and18 individually.
Ropair any short in the wire(s)betwoon th. heater co.rtrol panel
and the air mix conlrol motor.
HEATER CONTROL PANEL 2OP CONNECTOR
PNK/BLK
RED/BLU
Wire side of female terminals
To page 22-13
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