static unsigned char counter=0;

void __interrupt() INTERRUPT_InterruptManager (void)
{
    if(PIE4bits.TMR2IE == 1 && INTCONbits.PEIE == 1 && PIR4bits.TMR2IF == 1)
    {
        PIR4bits.TMR2IF = 0; // Clear IF
        if(counter==4)
            counter=0;

        LATC = (1 << (4+counter)) | (LATC & 0x0f);

        counter+=1;
    }
}