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AC(diag)-8 Auto A/C Control Module I/O Signal HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) *1: Battery voltage cannot be measured because of digital signal. B: WIRING DIAGRAM 1. AIR CONDITIONER AUTO A/C MODEL <Ref. to WI-111, WIRING DIAGRAM, Air Conditioning System.> 20 Intake door actuator drive signal When intake door actuator is operating 0.7 V or less 40 21 Ignition power supply Ignition switch: ON Battery voltage 22 Pressure switch signal Ignition switch: ON Normal: ON Abnormal: OFF 24 Air mix door actuator (driver’s side) Air mix door: Maximum cool position 4 V Air mix door: Maximum hot position 1 V 25 After-evaporator sensor signal Changes by the temperature after the evaporator 1 — 4.5 V 26 VER switching signal (FOOT switch) When switching FOOT 0 V 27 Sensor ground Always 0 V 28 Control module ground Always 0 V 32 Heater main relay drive signal Ignition switch: ON Battery voltage 33 RAM monitor ON signal RAM monitor ON 0 V 34 Heater control panel communication — *1 35 Heater control panel communication — *1 Terminal No. Remarks Measuring condition Standard |