Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Forester 1999-2004 Approved Subaru Forester 2004 5 - Body HVAC SYSTEM (AUTO AC) (DIAGNOSTICS) AC Control Module IO Signal

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AC Control Module IO Signal


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                                 A/C CONTROL MODULE I/O SIGNAL
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)

4. A/C Control Module I/O Signal
A: ELECTRICAL SPECIFICATION




                        10 9 8 7 6 5 4 3 2 1                                8 7 6 5 4 3 2 1
                        20 19 18 17 16 15 14 13 12 11                       16 15 14 13 12 11 10 9


                             To B:    i49                                     To A:     i48




                                                                                                                  AC-00099


Connector &                                                                                                    Specified
                                 Content                                  Measuring condition
Terminal No.                                                                                                    value
    B9                                                        Changes outlet from VENT to DEF.
               Mode door actuator                                                                                  *2
    B8                                                        Changes outlet from DEF to VENT.
    B7                                                        Changes air mix door from COOL to HOT.
               Air mix door actuator                                                                               *1
    B6                                                        Changes air mix door from COOL to HOT.
    B5         IGN power supply                               Ignition switch: ON                            Battery voltage
    B4         Battery power supply                           Ignition switch: OFF, ACC, ON                  Battery voltage
                                                              Ignition switch: ON and under normal sunload
    B3         Sunload sensor                                                                                     3V
                                                              (without sunload: 5 V)
    B2         Evaporator sensor                              Ignition switch: ON                              5 V or less
                                                              Air mix door: COOL position                         0.5 V
    B1         Air mix door actuator P.B.R. signal
                                                              Air mix door: HOT position                          4.5 V
    B20                                                       Air inlet: FRESH (other positions: 12V)              0V
    B19        Intake door actuator signal                    Air inlet: MIX (other positions: 12 V)               0V
    B18                                                       Air inlet: RECIRC (other positions: 12 V)            0V
    B17        A/C ON signal                                  A/C: ON (A/C OFF: 0 V)                            8 -- 10 V
    B16        Blower motor control                           *3                                                    *3
                                                              When blower fan running (when blower fan not
    B15        Blower fan ON signal                                                                               0V
                                                              running: 12 V)
    B13        Engine coolant temperature sensor              When the engine coolant is at 49



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