My vehicle has a dual climate control system and the conditioned air that
is
emitted from the driver's vents is substantially warmer than that
out of the passenger vents. This condition exists when both controls are
set for the same temperature in dual mode as well as when set by the
driver's control in non-dual mode. For instance left side air output is
72
degrees when the right side air output is 47 degrees.
The left side blend control motor and the exterior air temp sensor were
both
replaced with no apparent effect. The a/c technician working on my car
said
he got a 105 code when he ran the BCM diagnostics using the climate
control
system switches. He said the 105 code indicates a bad left side blend
motor
control motor and this code was present even after replacing the motor
with
a new one. He also said he was able to manually move the blend door from
the full heat to the full cool when he had the motor out and could detect
no
binding during the full travel of the door. Unfortunately, he was not
able
to isolate the problem.
I suspect there is a wiring problem causing this situation but without a
wiring diagram I don't know where to start. Any suggestions you have on
isolating this problem will be greatly appreciated.
Ray
