Test B: A/C Mode Selector Test

Backprobe connector C1 to the Heater and A/C Control Assembly and measure the voltage to ground with the connector still in place.

Test B A/C Mode Selector Test:

^ If Battery voltage is at terminal E, but not at terminal D, repair or replace Heater and A/C Control Switch Mode Selector.
^ If Battery voltage is not present at terminal E, check the BRN wire (50) for an open circuit back to Fuse 7.