nsx22index.pdf

HVAC (Heating, Ventilation and Air Conditioning)
*: Read SRS precautions before working in this area
Special Tools
’91−’94 Models 22−2. . . . . . . . . . . .
’95−’96 Models 22−2. . . . . . . . . . . .
Component Location
Index 22−3. . . . . . . . . . . . . . . . . . . . .
Heater-Evaporator Door
Position 22−4. . . . . . . . . . . . . . . . . .
Description
Outline 22−6. . . . . . . . . . . . . . . . . . .
A/C Triple Pressure
Switch 22−7. . . . . . . . . . . . . . . .
Fan Control Unit 22−8. . . . . . . . . . .
Wiring/Connector
Locations 22−9. . . . . . . . . . . . . . . . .
Troubleshooting
Self−diagnosis Circuit
Check 22−12. . . . . . . . . . . . . . . . .
Function Selection and
Operation Check 22−13. . . . . . .
Symptom−to−Component
Chart 22−14. . . . . . . . . . . . . . . . . .
Climate Control Unit
Input/Output Signals 22−15. . .
Climate Control Unit
Replacement 22−54. . . . . . . . . . . . . .
Adjustment 22−55. . . . . . . . . . . . . . .
Air Mix Control Motor
Replacement 22−56. . . . . . . . . . . . . .
Test 22−57. . . . . . . . . . . . . . . . . . . . . .
Mode Control Motor
Replacement 22−57. . . . . . . . . . . . . .
Test 22−58. . . . . . . . . . . . . . . . . . . . . .
Recirculation Control Motor
Test 22−59. . . . . . . . . . . . . . . . . . . . . .
Replacement 22−59. . . . . . . . . . . . . .
Vent Door Control Motor
Test 22−60. . . . . . . . . . . . . . . . . . . . . .
Replacement 22−60. . . . . . . . . . . . . .
In−car Temperature Sensor
Replacement 22−61. . . . . . . . . . . . . .
Test 22−61. . . . . . . . . . . . . . . . . . . . . .
Outside Air Temperature Sensor
Replacement 22−62. . . . . . . . . . . . . .
Test 22−62. . . . . . . . . . . . . . . . . . . . . .
Sunlight Sensor
Removal 22−63. . . . . . . . . . . . . . . . . .
Test 22−63. . . . . . . . . . . . . . . . . . . . . .
Heater Core Temperature Sensor
Removal 22−64. . . . . . . . . . . . . . . . . .
Test 22−64. . . . . . . . . . . . . . . . . . . . . .
Evaporator Temperature Sensor
Removal 22−65. . . . . . . . . . . . . . . . . .
Test 22−65. . . . . . . . . . . . . . . . . . . . . .
Aspirator Fan Test 22−66. . . . . . . . . . . .
Relay Test 22−66. . . . . . . . . . . . . . . . . . .
Blower Unit
Replacement 22−67. . . . . . . . . . . . . .
Overhaul 22−68. . . . . . . . . . . . . . . . .
A/C Service Tips
and Precautions 22−69. . . . . . . . . . .
A/C System Service
Performance Test 22−70. . . . . . . . .
Pressure Test Chart 22−72. . . . . . .
Refrigerant Recovery 22−73. . . . . .
Evacuation 22−89. . . . . . . . . . . . . . .
Leak Test 22−90. . . . . . . . . . . . . . . . .
Charging 22−91. . . . . . . . . . . . . . . . .
Heater-Evaporator Unit
Replacement 22−74. . . . . . . . . . . . . .
Overhaul 22−76. . . . . . . . . . . . . . . . .
”DEF” Door Adjustment 22−77. . . .
”HEAT” Door Adjustment 22−77. .
Condenser
Description 22−78. . . . . . . . . . . . . . .
Replacement 22−79. . . . . . . . . . . . . .
Overhaul 22−80. . . . . . . . . . . . . . . . .
Compressor
Description 22−81. . . . . . . . . . . . . . .
Component Location
Index
’91−’92 Models 22−76. . . . . .
’93−’96 Models 22−82. . . . . .
Replacement 22−83. . . . . . . . . . . . . .
Clutch Inspection 22−85. . . . . . . . .
Clutch Overhaul 22−86. . . . . . . . . . .
Relief Valve
Replacement 22−87. . . . . . . . . .
Belt Adjustment 22−88. . . . . . . . . . .