PORTB pins 10, 11, 12, 13 don't work as digital I/O (PIC24FJ256GB106) (Rogério A. Morais)

Hello, I've "#pragma config JTAGEN = OFF" in my code, but pins don´t work as digital I/O. Analog is disable (AD1PCFG = 0xFFFF). Any idea? Thanks,Rogerio AM..