HFT-Voice Control Switch Test/Replacement
  1. Measure resistance between the No. 3 and No. 4 terminals in each switch position according to the table.

    HFT-Voice Control Switch

    Position
    Resistance
    OFF
    About 1 kΩ
    HFT Talk button pressed
    About 227 kΩ
    HFT Back button pressed
    About 47 kΩ

  1. If the resistance is not as specified, replace the switch.