The Blower Motor in my RSX-S wont shut off unless the Blower Control Relay is removed. I bought another relay and that did not fix the problem. I did a diagnostic and the code was 12 (Blower Control Circuit). Ive worked on electronics and cars for years and have never seen where something fails to stop working which to me indicates an open circuit. Is this right? and should I keep replacing relays to troubleshoot?

To repair this replace the blower motor speed control resistor module first. There is also a possibility the blower motor relay is stuck on.

Yes both relay and switch are possible.Needs to be inspected.
Blower motor replacing for all vehicles? http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

Blower motor Resistor shorting problem?

http://schematicsdiagram.blogspot.com/2011/12/blower-motor-resistor-shorting-problem.html

How to remove Blower control switch? http://howtobyme.blogspot.in/2012/02/how-to-remove-blower-control-switch-on.html

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Where is blower motor relay located ? http://technoanswers.blogspot.in/2012/02/where-is-blower-motor-relay-located-on.html

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This will help.Thanks.

COULD HAVE CORROSION INSIDE FUSE AND RELAY BOX CAUSING POOR CONTACT IN ELECTRICAL CIRCUITS. REMOVE FUSE AND RELAYS TO CONTROL CIRCUITS SPRAY A LITTLE ELECTRONIC CLEANER ALLOW IT TO DRY.CHECK BLOWER MOTOR RELAY IT COULD BE BAD OR BLOWER MOTOR RESISTOR BAD HOT BLOWER MOTOR TO SEE IF BLOWER WORK IF NO YOU HAVE FAULTY BLOWER MOTOR. IF BLOWER MOTOR WORKS WHEN YOU HOT WIRE BLOWER MOTOR CONTROL SWITCH COULD BE BAD.RADIO AND POWER PROBLEM COULD BE IN THE FRONT CONTROL MODULE IF CLEANING OUT CONTACT WITH ELECTRONIC CLEANER.DEALERSHIP HAS TO CHECK IT OUT.

CHECK HEATER AND AC IGNITION 10 AMP FUSE UNDER HOOD JUNCTION BOX.IF ALL IS GOOD CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL LOOKS GOOD. TURN ON CONTROL SWITCH TO CHECK TO SEE IF POWER GOING TO BLOWER MOTOR IF YES BLOWER MOTOR BAD.IF NO POWER GOING TO BLOWER MOTOR FUSE AND RELAY GOOD.YOU HAVE BROKE WIRE BETWEEN SWITCH AND BLOWER MOTOR OR CONTROL SWITCH FAULTY. TO GET TO BLOWER MOTOR ITS LOCATED UNDER THE DASH ON PASSENGER BEHIND GLOVE COMPARTMONT YOU DONT HAVE TO REMOVE GLOVE BOX ITS JUST BELOW IT FAR BACK.YOU NEED TURN OFF RADIO FIRST THEN DISCONNECT NEGATIVE BATTERY CABLE WAIT 20 MINUTES THIS DISABLE AIRBAGS AND THE BCM.REMOVE BLOWER MOTOR HOTWIRE IT TO SEE IF ITS WORKS. IF NO BLOWER MOTOR NO GOOD.IF BLOWER MOTOR GOOD THE AC AND HTR CONTROL SWITCH IS BAD DEALERSHIP FIX.

the swicth is bad in dash were the swicth goses off and 1 though 4 or 5

If you have a test light,check for power at the blower motor,see if it will come on with a wire from battery positive ,to the positive on the blower motor,if it does not,check to see if the motor is grounded,then check to see if the relay has 12 volts to it.The relay should have 12 volts to it,with the switch off.Turn the switch on,and use test light only,touch the probe to all the terminals on the relay,one at a time,with the relay plugged up,when the test light touches the ground,on the relay,it will activate the blower motor,ground the test light of course.Use a test light to chase down the problem,it is the best toll for this,and is not exspensive.

I believe that this is what you are looking for.....
Fuse and relay locations--2nd generation power distribution box Layout- I think this is a good sticky candidate--



Fuses are listed here

* = maxi fuse

1*=50A I/P fuse panel
2*=40A blower motor relay
3*= 50A 4 wheel ABS module
4*=20a Main light switch-Instrument cluster
5*=50A Ignition switch, starter relay

6*=20A Transfer case relay
7*= NOT USED
8*=20A Auto Ride Control Switch/on off switch
9*=40A Auto Ride Control relay
10*=30A PCM power relay

mini fuses
1=10A A/C relay
2=20A Aux power point
3= not used
4=15A Fog lamps-Daytime lamps
5=10A Air Bag diagnostic monitor
6=10A Powertrain Control Module (PCM)
7=30A 4WABS module
8=30A PCM relay
9=20A Fuel Pump relay and RAP module
10= 15A Horn relay
11=15A Park Lamp relay-Main Light Switch
12=30A Main light switch--Multi Function switch
13=15A Heated O2 sensors, EGR Vacuum Regulator, EVR solenoid,Camshaft position (CMP) Sensor,
Cannister Vent Solenoid, A4LD Auto Transmission
14=30A Generator-Voltage regulator


Interior fuse panel (mini fuses)

1=7.5A Power mirror switch
2=7.5A Blower motor relay,PAD module,Air Bag diagnostic monitor
3=7.5A Trailer tow connector
4=10A Left headlamp
5=10A Data link connector (DLC)
6=7.5A Air bag diagnostic monitor, Blower motor relay, Passive deactivation Module (PAD)
7=7.5A Trailer Tow connector
8=10A Right headlamp, Daytime running lamps (DRL) module, Foglight relay
9=7.5A Stop Lamp switch
10= 7.5A Speed control-amplifier assembly,Brake pressure switch, Generic electronoc Module (GEM)
Shift lock actuator, Blend door actuator, Main light switch, RABS resistor, A/C heater assembly
Flasher
11= 7.5A Instrument cluster, Main light switch, RABS resistor
12= 10A Power window relay, Washer pump relay
13= 20A Stop lamp switch, Brake pressure switch
14= 20A Rear Anti Lock Brake system (RABS) module
**10A 4WABS module**

15=7.5A Instrument cluster
16= 30A Windshield wiper Motor, Wiper Hi-lo relay, wiper run/park relay
17=7.5A Cig lighter
18=15A Drivers unlock relay-All unlock relay
19=25A PCM power diode
20=7.5A RAP module GEM module, Radio
21=15A Flasher (hazard)
22=20A Aux power socket
23=15A Turn signals
24===not used
25= 7.5A GEM module, Instrument cluster
26= 10A Battery saver relay, Electronic Shift relay, Interior lamp relay
Power window relay,Electronic shift control module, transmission control
27=15A Switch,DRL, Backup lamp switch, DTR sensor,Instrument illumination dimming control module
Dome/map lamp, GEM,electronic shift,Interior lights,Glove box lamp and switch
28=7.5A GEM module-Radio
29= 15A Radio
30=15A Park lamps, trailer Tow relay
31===not used
32=10A rear blower
33=15A Headlamps, DRL module, Instrument cluster
34=7.5A Rear integrated control panel, CD
35=10A RABS test connector
36=7.5A CD, rear integrated control panel, memory seat, Message center Attached images __________________

Probably a stuck fan control relay.
Find the relay and remove it - if this stops the fan. replace the relay with a new one.

replace the blower motor speed control module, it is shorted.

BlowerMotor Relay is Located On Driver Side in Engine Compartment and is the LARGE Relay in center of box CLOSEST to you If you are Standing On the Driver side of Car This is A Culpret, Also the "BLOWER MOTOR RESISTOR" also can Cause What You describe.
I HAVE PICTERS AND Manual Info But need Email Address to send as FixYa Wont Exept this Type of Files

Blower Unit Components Replacement

Note these items when overhauling the blower unit:


The recirculation control motor, the power transistor ), the blower motor (C), and the dust and pollen filters (D) can be replaced without removing the blower unit.

• Before reassembly, make sure that the recirculation control linkage and doors move smoothly.
• After reassembly, make sure the recirculation control motor runs smoothly.