Angular 2 AuthGuard Service with redirect?

In AuthGuard do the following:

@Injectable()
export class AuthGuard implements CanActivate {
  constructor(private authService: AuthService, private router: Router) {}

  canActivate() {
    if (/*user is logged in*/) {
      this.router.navigate(['/dashboard']);
      return true;
    } else {
      this.router.navigate(['/Login']);
    }
    return false;
  }
}