USA car answer, all other electrics good.?
no engine told and fuse boxes located different.
the cab blower must blow air, does it?
the dash AC lamp glows too. if not ,relay stays off
first is fuses.
IDPM under hood
fuse 79 must not be blown. ,frankly I check all fuses. why skip any?
the relay A/c is in the iDPM (and its fuses)
we scan the OBD2 scan port. this AC needs Can_bus network to fully functional or this A/C can go dead./
the Hi/low pressure switch R134 will trip it all off line if too low
or too high both,someone overfilled it. oops, off line it goes.
The IDPM under hood IS A computer, and does not nothing if can_bus fails.
IPDM E/R (Intelligent Power Distribution Module Engine Room)
ahhhhhhhhhhm, i see why you ask this,
the IPDM many relays there(LOTS) do NOT REMOVE.
NO socket for A/C relay and NO Rn R number assigned
but is there
the cars users guide is useless for any specific fuse or relay.
only the service manual covers all.
fuses are first, never relays first
then scan the PCM is 2nd.
lots to fail here, it is NOT simple. like in 1980
more here
https://fuse-box.info/infiniti/infiniti-m35-m45-y50-2006-2010-fuses-and-relays/amp
fuse F12 cab JB powers ESC ,compressor control valve. at pin2 above.
if the HVAC main controls "ATC" does not send a DEMAND for AC
the CLUTCH does not Energized ever.
the blower must work
JB fuses for ATC must be good, cab box
Fuse #6 ,10,11,12 and 19.
ignition relay dead ,so be AC/ relay, but engines runs. so not this.
if the ATC sees any damper motor dead, it may stop A'/C
also most modern cars have s HVAC self test try that?
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