The PCM would not relate to a short on the comfort fuse circuit. Is the fuse blowing, or the battery going dead? When you press and hold off and warmer, it should display any codes for each module, or no XXX codes if there are no codes in the respective module. When it says PCM, and you press fan up, it should select PCM, and fan down will scroll options like PCM override, PCM codes, PCM data, etc. Highlight PCM codes and press fan up again, it should display codes. Or, scroll to VTD codes, and perform the same procedure.
Saturday, August 29th, 2020 AT 1:59 PM