Fan not running

hello~ I have some trouble about xavier agx.
Fan is not running…

input : sudo cat /sys/devices/pwm-fan/target_pwm
output : 255

but fan is not running…

input : sensors
output :
iwlwifi -virtual -0
adapter : virtual device
temp 1: +51.0 degree

         thermal -fan -virtual - 0
         adapter : virtual device
         temp 1: + 60.1 degree

how can i solve this probelm…?

Did you already check out the fan mode control options?

Thank you for your reply.
I changed my fan mode by referring to the site you linked me to. But this error occurred.

~$ sudo /usr/sbin/nvpmodel -d cool
/usr/sbin/nvpmode : invalid option – ‘d’
Nvidia Power model Tool Version 1.1.2

~$ sudo /usr/sbin/nvpmodel -q
NV Power Mode:MAXN

and According to the site,

To change the default fan mode
Set the default fan mode by putting the following property in nvpmodel.conf:
<FAN_CONFIG DEFAULT=<fan_mode> >

but i can’t find <FAN_CONFIG DEFAULT = <fan_mode> >

hello xmfxhddl,

may I know what’s the software modification you had done,
could you please verify fan functionality with the default JetPack release image?