Blower Switch Test

NOTE: This test is to be performed with the A/C Mode Selector in the VENT position and the Ignition Switch in the RUN position.

Remove the connector from the Blower Resistors. Measure the voltage to ground at the connector to the Blower Switch on the A/C Control Head with the connector still in place.

Blower Switch Test.:

^ If any of the voltages above are not correct, check the YEL, TAN, and LT BLU wires for opens or shorts. If wires are OK, install a new A/C Control Head.
^ If voltage is not present at any terminal, check the BRN/WHT wire (64) for an open. If wire is OK complete the A/C Mode Selector Test. A/C Mode Selector Test