Front & rear blowers stopped working, no power going to fuse. Replaced relay, still not working. put direct DC to fuse fan blower comes on. Any suggestions on troubleshooting?

fan control relay. go online for parts and location

Manual or automatic climate control ? Which orange wire . There are two . Blower motor relay for high speed . FRT/ HVAC fuse 30 amp located in the under hood fuse/relay box . HTR-A/C fuse 25amp. located in the left I/P fuse box .

Yes it's the heater relay. There is no power activating your relay
Replace it

Need wiring diagrams in order to learn what is in the
circuit & how it works & were to do your testing

I think most people know that, but have no experience
working with wiring diagrams

I won't go near a vehicle or check anything at all, without
studying a wiring diagram first

You did the component testing part, but you usually do the
power or voltage drop testing & grounds to components first

Unplug it & check power to the blower
& try battery voltage to the blower

Doesn't matter how you put power to
a blower or fan they are dc motors &
run either direction

At the moment, I think something wrong with "totally integrated power module", some people call this the bcm. There is no relay or fuse for front blower motor, there is a relay for rear blower. The dark blue wire is voltage from bcm or if you wish totally integrated power module. You could check the wire circuit/dark blue wire. With hvac turned on, check for voltage at the blower module and bcm, you could also check continuity, no voltage on the system.

I would start if you haven't already by checking the fuse. Below is a fuse layout diagram for your vehicle. The yellow arrow is pointing to the 40 amp fuse for the blower motor and the red arrow is pointing to the blower motor relay. If the fuse is good and having someone helping, while touching the relay with your finger have the other person turn the A/C fan on and see if you feel a click inside the relay. If you do not you may be dealing with a bad relay. You can also check to make sure you are getting power at the brown and yellow wire at the blower motor itself. Use a separate ground than the other wirw at the blower motor connector. You should have battery voltage there. If all is good so far you can put direct power and ground to the blower motor to see if it works and if it does you may be looking at the blow motor resister or the controller. I would need to know if you have a manual or automatic climate controlled system in prder to help further. This is all assuming you are talking about the front A/C system and not the rear or aux. A/C system. Hope this helps.....

Check for current at the blower motor using a test light to ground. If there isn't any, then the blower relay will have to be replaced, or check for a blown fuse.

C-19 Blower motor fuse 25A located in cabin fuse box. Left hand footwell on LHD vehicles, right hand dashboard on RHD vehicles.
Start by checking blower relay B-36 in the engine compartment fuse and relay box. Remove the relay. Jumper directly from battery to pins 85 and 86. (also see here: http://www.fixya.com/cars/r5544622-wire_relay if you dont know about relays) The relay should click Now measure across pins 30 and 87. Measurement should be 0 ohm.
Remove the blower motor(3 screws on the bottom of the unit under the passenger side dash) and connect jumper leads from the battery directly to the blower motor to see that it operates.
The blower motor resister is mounted on the ducting between the motor housing and the heating unit. Remove to test
Measure :

• pin 1-2 : 2.4 ohm
• pin 2-4 : 0.9 ohm
• pin 2-6 : 0.28 ohm
• pin 2-3 : 0 ohm

need to repair