TM 9-2320-364-20-3 2-1932 2.  CTIS INOPERATIVE (CONT). 7. Replace CTIS controller (Para 13-7). Verify repair, go to Step 11 of this Fault. YES NO Heater operates indicating 24   vdc are input to circuit breaker   CB17. System air pressure is greater   than 110 psi (758 kPa). CTIS lines and components   not leaking. No lights illuminated on   controller. CTIS wire harness connections   OK. Voltage regulator OK. CTIS protection device OK. Circuit breaker CB17 OK. Wire 1880 OK. Wire 1435 OK. CTIS controller faulty. Wire 1065 faulty. Front manifold faulty. Wire 1064 faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. STE/ICE-R #89. If 22 to 28 vdc are not present at CTIS controller connector MC111, terminal 10, CTIS controller is faulty. WARNING 8. Are 22 to 28 vdc measured on wire 1065 at connector MC109, terminal 10? Repair wire 1065 (see schematic Fig 2-48) or notify DS Maintenance. Verify repair, go to Step 11 of this Fault. YES NO Heater operates indicating 24   vdc are input to circuit breaker   CB17. System air pressure greater   than 110 psi (758 kPa). CTIS lines and components   not leaking. No lights illuminated on   controller. CTIS wire harness connections   OK. Voltage regulator OK. CTIS protection device OK. Circuit breaker CB17 OK. Wire 1880 OK. Wire 1435 OK. CTIS controller OK. Wire 1065 faulty. Front manifold faulty. Wire 1064 faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Voltage test. STE/ICE-R #89. If 22 to 28 vdc are not present at connector MC109, terminal 10, wire 1065 is faulty. Are 22 to 28 vdc measured at CTIS controller connector MC111, terminal 10? WARNING Read   WARNING on Page 2-1933 Read   WARNING on Page 2-1933