Blower motor is full blast even when the controls are off?

SPEEDHOBBIT

MEMBER
2010 NISSAN ROGUE
2.5L
4 CYL
125,232 MILES

The blower motor is full blast even when the controls are off. I have changed the AC amp control as well as the blower relay. Where do I go from there?

Saturday, November 11th, 2017 AT 8:00 PM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,967 POSTS

It looks like the motor is controlled by the air conditioner amplifier. You will need to run some wiring/power and ground testing before you confirm the amplifier is out.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/how-to-check-wiring

M50 is the AC amplifier in the diagrams (below).

Please run some tests and get back to us.

Cheers, Ken

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