Fault Message:

[ACSC2-B] RH PCK IN PRESS XDCR /WRG

Fault Code:

2164415ECS

Associated CAS:

R PACK AUTO FAIL
(Caution)

R PACK FAULT
(Advisory)

Right Pack Inlet Pressure Transducer has been detected out of range by Air-Conditioning System Controller (ACSC) 2.

• Air-Conditioning System Controller (ACSC) 2 (A88)
• Pack Inlet Pressure Sensor 2 (MT108)
• Junction Box (JB6)
• Associated Wiring

Advisory Wire/Service Bulletin:

• AW700-21-0160 - "PACK FAULT" CAS message while CAIMS / OMS is active

Forum Articles/Infoservice/Newsletter: None

1. Check CAIMS status of the Pack Inlet Pressure sensor (CAIMS path: SYSTEM DIAG/21-00 AIR CONDITIONING/ACSC 2-B/LRU TEST/R ACSC CH. B PACK TEMP SENSOR DATA).

   1. If system checks are good, do close out.
   2. If fault remains, continue with next step.

2. Swap Pack Inlet Pressure sensor 2 with Pack Inlet Pressure sensor 1.

   1. If system checks are good, replace Pack Inlet Pressure sensor 2 and Perform step 1 again.
   2. If fault remains, continue with next step.

3. Swap ACSC 2 with ACSC 1.

   1. If system checks are good, replace ACSC 2 and Perform step 1 again.
   2. If fault remains, continue with next step.

4. Perform wiring checks between Pack Inlet Pressure sensor and ACSC 2.

   1. If wiring checks are not good, repair defective associated wiring and do close out.
   2. If wiring checks are good, continue with next step.

5. Remove JB6 and perform a wiring checks of all wiring / circuit involved with the Pack Inlet Pressure sensors power source.

   1. If wiring checks are not good, repair defective associated wiring and do close out.
   2. If wiring checks are good, continue with next step.

6. Perform continuity check of JB6.

   1. If there is continuity, repair defective associated wiring as required and do close out.
   2. If there is no continuity, continue with next step.

7. Replace JB6.
8. Do close out.