my a/c blows only cold air .

2000 JAGUAR S-TYPE
135,000 MILES
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TERRAPHARMA
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Not getting any heat . Dccv fuse is good . My Tec says dccv valve tested OK, wiring to hvac module OK ,found bulletin for hvac module update . Tec says update required . So before driving to the Jaguar dealer , I read this tsb and (# jtb00103) notice the subject: a/c unable to lower outlet temperature . This is the opposite of the problem I am experiencing . The question then remains , what is the real problem ? Would I be wasting a lot of diagnostic time looking into that tsb ? Anyone had this situation crop up?
Nov 8, 2011 at 5:39 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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