__CONFIG _CONFIG3H, _CCP2MX_OFF_3H puts ccp2 onto portb.3
use

DEFINE CCP2_REG PORTB 'Channel-2 port
DEFINE CCP2_BIT 3 'Channel-2 bit

or
__CONFIG _CONFIG3H, _CCP2MX_ON_3H


or set trisb.3 to 0 and trisc.2 to 0 and CCP2CON=12



from data sheet
bit 0 CCP2MX: CCP2 Mux bit
1 = CCP2 input/output is multiplexed with RC1
0 = CCP2 input/output is multiplexed with RB3