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dmwise

02-26-2018 06:14 PM

2010 Mazda CX9 AC blower fan

Have a 2010 Mazda CX9, while driving today the front AC/heater blower fan would not come on, checked rear blower and it was fine. Check AC fuses all okay, swapped front and rear blower relays, rear still works but front doesn't. Could it mean blower motor is bad or could it be something else.

grim_reaper

02-27-2018 02:53 AM

You will need to cjeck for power & earth to the fan motor & test the fan itself. They are fairly easy to remove.

dmwise

02-27-2018 08:43 AM

Resister

Could the problem also be in faulty resister

grim_reaper

02-28-2018 03:22 AM

Possible, but usually when they die the fan only goes in full speed mode.

Using a volt meter at the fan will show the output of the resistor.

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