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HEATERS AND MANUAL
AIR CONDITIONING
Troubleshooting
5543
TROUBLESHOOTING QUICK-REFERENCE TABLE
Compressor doesn’t operate.
no.
Method
Probable cause
Inspection
point
Magnetic
clutch
condition
Sound is noted
Remedy
Replace magnetic
clutch.
Apply battery voltage to
magnetic clutch terminal
(1) to check if sound is de-
veloped during operation.
Faulty magnetic clutch
Blower switch
Faulty blower switch
Check for continuity be-
tween switch terminals.
(Refer to P
Check for continuity be-
tween switch terminals.
(Refer to P
Continuity
3
Air condition-
ing switch
Continuity
Faulty air conditioning
switch
Replace air conditioning
switch.
Replace magnetic
clutch relay.
Check for continuity be-
tween
(2) and (4)
Continuity
Faulty air magnetic clutch
relay
Magnetic
clutch relay
With battery voltage ap-
plied between terminals (2)
and
check for continu-
ity between terminals (1)
and (3)
Connect adapter valve and
gauge manifold to service
plug to measure high pres-
sure side refrigerant pres-
sure.
5
Liquid pipe
Within range of 2,100 to 2,700
(299 to 384 psi)
Correct places where
gas leaks.
Gas leakage
6
Dual-pres-
sure switch
Replace dual-pressure
switch.
Check for continuity be-
tween switch terminals.
Check for continuity be-
tween thermostat termi-
nals. (Refer to
Continuity
Continuity
Faulty dual-pressure
switch
Faulty thermostat
7
Thermostat
Replace thermostat.
3
sensor
Measure resistance across
terminals at a sensing tem-
perature of
(77°F)
Within range of 3.9 to 4.1
Faulty
sensor
Replace
sen-
sor.
Faulty air inlet sensor
Replace air inlet sensor.
Air inlet sen-
sor
Measure resistance across
terminals at a sensing tem-
perature of
(77°F)
Within range of 0.9 to 1
If no abnormality is noted at each inspection point after inspection conducted in the sequence shown in
quick-reference table it is suspected
that the compressor is inoperative because of faulty air conditioning control unit. Therefore, replace the air
unit.
Interior temperature does not lower
(No cold air coming out)
Probable cause
R e m e d y
Ref. page
Excessive refrigerant
Discharge refrigerant.
Clogged receiver
Replace receiver.
55-48
Clogged expansion valve
Replace expansion valve.
Defective compressor
Replace compressor.
55-39
TSB Revision
Summary of Contents for 1992 3000GT
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Page 104: ...13 2...
Page 118: ...13A 14 MULTIPORT FUEL INJECTION Special Tools TSB Revision...
Page 394: ...NOTES...
Page 460: ...NOTES...
Page 532: ...NOTES...
Page 536: ...21 4 CLUTCH Troubleshooting Excessive wear of clutch disc facin I LJ 1 TSB Revision...
Page 556: ...NOTES...
Page 570: ...22 14 MANUAL TRANSAXLE AWD Special Tools SPECIAL TOOLS Oil seal installer TSB Revision...
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Page 600: ...I I I LJ LJ I L...
Page 609: ...AUTOMATIC TRANSAXLE Troubleshooting 23 I 9 L L 1 TSB Revision...
Page 668: ...NOTES...
Page 692: ...NOTES...
Page 752: ...33 2 NOTES...
Page 766: ...NOTES...
Page 809: ...REAR SUSPENSION AWD Special Tools 34 23 B lMB990244 i TSB Revision...
Page 810: ...34 24 REAR SUSPENSION AWD Troubleshooting TROUBLESHOOTING TSB Revision...
Page 946: ...NOTES...
Page 958: ...NOTES...
Page 960: ...37 2...
Page 964: ...37A 4 STEERING Snecial Tools SPECIAL TOOLS Preload socket General service TSB Revision...
Page 994: ...NOTES...
Page 1006: ...NOTES...
Page 1068: ...42 62 BODY Sunroof SUNROOF SWITCH CONTINUITY CHECK 18FO403 TSB Revision...
Page 1070: ...NOTES I...
Page 1103: ...52 1 i INTERIOR CONTENTS INTERIOR 52A SUPPLEMENTAL RESTRAINT SYSTEM SRS 528 i...
Page 1104: ...52 2 NOTES...
Page 1220: ...NOTES dl...
Page 1307: ...1 1 I I I 1 I 1 1 I I I j I i i i I i I j j...
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