Well - had an Ac issue - looked on this forum and i saw that most people had issue with the Ac clutch really
so i have followed from another tread - that was posted here .... got new relay .... and it was a no go
found the manual pdf's for IS 300 ( have an 04 ) and started looking
one thing after looking at the schematic for all inputs that enable Ac to run - the inside display did not show
the outside temperature - it was all " - - - " - which ties to a Ambient temp sensor
the sensor is located behind the lower grille - close to the fog light - did not want to take a lot of stuff off
so took the upper grille off - then partially took off the plastics of the bottom of the car - still had issue to getting to it
also took some of the wheel well plastic partially off too ..... had a hell of a time taking off the ambient sensor plug
off ..... after taking the plug off - the wires seemed a bit loose - pulled a bit and the plug and like 2" of cable came out of the harness
so in other words had both leads to the ambient sensor broken ( cut ? ) ...
got in the harness - witch was a pita also ( without taking the bottom off as i said before ) - started looking for the
damaged wires - while i was looking i found that one of the wires of the sensor that is on front of the ac condenser
was damaged too - so went to stripping the shield on the harness again more back ....
after hooking up ( splicing the 3 wires ) ..... was out of black tape ( so orange it is lol )
all works good ..... thx to all that posted their issues on this forum and to the person that posted the
PDF's for the Is 300 ..... all that was a lot of help
thx
