Quote:
Originally Posted by D_Ryan
All;
Looks like it is time to open the unit and visually inspect the runs and touch up the solder connections. One question, is it readily identifiable which relay corresponds to which function switch, or will I need to trace the wire runs?
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I would clean the relays before breaking out the soldering iron.
If the fan kicks on when Defrost or Bi-level is selected, but
not when normal a/c or EC is selected, the problem is the K-3 relay. The K-2 and K-3 relay are esentially wired in parallel. (The K-2 bypasses the cold engine lock-out switch (and powers the blower) in the Defrost and Bi-level modes only.)
Note: My reference is the 1982 300D wiring schematic.