Table of Contents 752 Air Conditioning and Climate Control Charging Precautions ....................................................................... 102 Determining Non-Condensables ...................................................... 103 Storage Cylinders ............................................................................. 104 Pressure – Temperature Graph R-12; R-134a; R-1234yf ................. 105 Section 5: A/C Section 5 Topics ............................................................................... 111 Temperature Control ........................................................................
112 Heater Control Valve ........................................................................ 113 Directing Air Flow ............................................................................. 113 Air Mixing .......................................................................................... 114 Blend Door ........................................................................................ 114 A/C ECU Controlled Servo-motor ..................................................... 115 Blower Motor ....................................................................................
116 Dual-Plane ........................................................................................ 116 Duty-cycle Blower Speed Control ..................................................... 117 Integrated Controller ......................................................................... 118 Brushless-type Motor ........................................................................ 118 Cabin Air Filter .................................................................................. 119 Plasmacluster ...................................................................................
119 Precautions ....................................................................................... 119 Air Distribution Control ...................................................................... 120 Air Flow and Outlet Modes ............................................................... 121 Air Outlet Modes ............................................................................... 122 Air Distribution Systems ................................................................... 123 System Controls Air Inlet Damper ............................................................................
123 Blower Motor ................................................................................ 123 Air Mix Temp. Control ................................................................... 123 Max Cool Damper ......................................................................... 123 Outlet Mode Damper .................................................................... 123 Mode Position Diagram .................................................................... 124 Damper Operation Chart .................................................................. 125 Air Damper Construction ..................................................................
126 Detached Membrane ........................................................................ 127 Rotary Air Mix Control Door .............................................................. 128 Section 6: Automatic Temperature Section 6 Topics ............................................................................... 129 Automatic A/C ................................................................................... 130 Based on the Basic A/C System ....................................................... 130 Automatic A/C Functions ...................................................................
131 Inputs & Outputs ............................................................................... 132 HVAC Recirculation Control ............................................................. 133 Control Operating Conditions ..................................................................... 133 Operation ....................................................................................... 133 Customer Override ........................................................................ 133 A/C ECU ........................................................................................... 134 iv Technical Training