This goes for you, too. Say your team members are good at delivering projects on time, but otherwise are difficult to reach via phone or e-mail. No one knows what irks you unless you speak up. Often, you'll find the neglect is benign, and team members will be quite responsive if you express your concerns. Be trusted yourself.
Soldiers follow trusted leaders into battle, and good managers earn the trust of their team.
Slack off and the team will come to expect it from you and slack off, too. Morale will slip, and distrust will grow, even among those outside the team who rely on your group. Honesty and performance begets trust. Know when to meet. Conference calls, video conferencing, e-mail and the like are ideal for updates, status reports and general schmoozing amongst team members.