Freightliner Hvac Blower Motor Wiring


Freightliner Hvac Blower Motor Wiring - span class news dt dec 09 2015 span nbsp 0183 32 hello i have a freightliner business class m2 the blower motor will not run i did a pin to pin continuity check on the harness and all wires ring out we replaced both the blower motor and the control head fuse is good also no bulkhead fault codes p div div class qbrs data data appns serp data k 5497 div li 04 freightliner m2 no power to heater motor that is the speed signal for the blower the hvac controller requires a speed signal on the blower motor so it knows the power and the ground are the heavier wires of the two the connector you will see in the schematic will be the bulkhead if there is power to the motor and it doesn t turn yes p div div class qbrs data data appns serp data k 5500 div li freightliner hvac wiring diagram you have 12 volts on pin four of blower motor connector and a ground on pin three of blower motor connector if all.
this is good your blower motor is bad this need to also restore your a c problem to due to the fact the front control unit senses blower motor rpm on pin 1 to show a c seize on p div div class qbrs data data appns serp data k 5503 div li span class news dt aug 01 2019 span nbsp 0183 32 there are 2 problem spots for blower motor problems on an m2 1 there is a plug that is about 12 away from blower motor follow connector from motor towards center of dash easy to find get rid of connector and butt connect wires if not bad now will be later 2 fuse box under hood lt blue wire in green fuse box connector is direct power to blower motor unplug connector and look at terminal if p div div class qbrs data data appns serp data k 5506 div li the 1996 aeromaster freightliner hvac system consists of blower motor blower switch blower motor resistor ac switch thermo switch power distribution system and.
ground the following schematic depicts the 1996 aeromaster freightliner hvac system wiring diagram p div div class qbrs data data appns serp data k 5509 div li 04 freightliner m2 no power to heater motor submitted 7 years ago category i am using ground off battery on test light what is small blue wire on motor plug for mechanic replied 7 years ago that is the speed signal for the blower the hvac controller requires a speed signal on the blower motor so it knows when to turn on the hvac p div div class qbrs data data appns serp data k 5512 div li air conditioning solutions for any application video gallery ac tech tips air conditioning system wiring diagrams return warranty terms and conditions contact us air conditioning solutions for any application freightliner blower motor business class cascadia century class columbia coronado fl series and sprinter delivery p div div class qbrs data.
data appns serp data k 5515 div li the blower motor should e on and blower at any time also the hvac controller must see blower rpm if it does not see blower speed it will not mand the clutch to e on as well so if your blower is not working i would start there it uses a 4 wire blower 1 hot 1 ground signal and return p div div class qbrs data data appns serp data k 5518 div li span class news dt aug 31 2013 span nbsp 0183 32 2005 freightliner m2 blower motor relay location posted by anonymous on aug 31 2013 blower operation is handled by the hvac control module which gets its power from the 10a hvac fuse in the instrument panel fuse block the problem is probably the blower motor resistor pack or the wiring connector for it these are located near the p div div class qbrs data data appns serp data k 5521 div li span class news dt feb 18 2013 span nbsp 0183 32 blower motor wont work in a.
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