Saturday, November 5, 2011

Heater Saga

on going heater saga;

Since the weather has started getting colder the heater issue has moved it self to the forefront. I had thought I checked all the basic things but some peeps suggested I check the fuses. If I checked them then I must have had my eyes closed. The 7.5 fuse that runs the heater was blown. I replaced it and now I have power to the heater control panel ( hmmmmm, go figure). I ran the self check and here is what I got;

(Fault code - description - problem area)

01 - circuit open - ambient temp sensor
02 - circuit open - in-vehicle temp sensor
03 - circuit open - solar sensor input circuit
04 - circuit open - front panel blower/fan control input
05 - circuit open - front panel mode control input
06 - circuit open - blend air door feed back circuit
07 - circuit open - mode door feedback circuit
16 - feedback to low - blower/fan feedback circuit
26 - coolant temp message missing - collision detection c2d bus inputs
27 - vehicle speed message missing - collision detection c2d bus inputs
28 - engine RPM message missing - collision detection c2d bus inputs

I took the blower motor resistor out, mainly to have a look, found that the cavity that it sits in was full of tree debris (really weird) and that the heat sink (the finned metal piece that the resistor sits against) had a small burn mark on it. Put it back together and no heat. The blower doesn't kick on and I get no heat. The heater control display shows an error and when I do the self-check I get the same fault codes.

Question is;

Where do I go from here and what should I check?