TEST OR INSPECTION
Connect two-way radio interface wire harness connector on two-way radio and
intercom. Disconnect passenger side intercom cable connector from passenger side
intercom jack. Connect passenger side intercom cable connector into driver side
intercom jack. While an assistant monitors two-way radio, press headset push-to-talk
button (WP 0004). Check if intercom keys up to transmit two-way radio (WP 0004).
If intercom keys up two-way radio, replace intercom cables and
connectors (WP 0395).
If intercom does not key up two-way radio, replace two-way
radio (WP 0430).
Inspect remote intercom cable connectors at remote intercom, interface adapter, crew
cab intercom wire harness connector, and intercom for loose connections (WP 0395),
(WP 0422), (WP 0445).
If connections are loose tighten or push connectors into seat.