Pack 1 Pressure Inlet Sensor Fault

TASK 21-61-00-810-822-A
Pack 1 Pressure Inlet Sensor Fault

1. Possible Causes

P1 PRESS INL SENSOR [16HH]
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-61-00-710-001	Operational Test of the Pack Temperature-Control System
AWM 216104
AMM 21-61-16-000-001	Removal of the Pack-Inlet Pressure Sensor
AMM 21-61-16-400-002	Installation of the Pack-Inlet Pressure Sensor

3. Fault Confirmation
Subtask 21-61-00-710-092-A ** ON A/C NOT FOR ALL

A. Do the operational test of the pack temperature-control system AMM 21-61-00-710-001.

NOTE: If a fault is detected, the PC gives a fault code for shop maintenance in addition to the related CFDS message(s) (refer to TSM chapter 21-63-00, page block 301).

4. Fault Isolation
Subtask 21-61-00-810-114-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message P1 PRESS INL SENSOR:

replace the P1 PRESS INL SENSOR [16HH] AMM 21-61-16-000-001 and AMM 21-61-16-400-002.

(1) If the fault continues:

do a check and repair the wiring between:
CONNECTOR (7559VC) pin C and PC 1 (7HH) connector AA/10C,
CONNECTOR (7559VC) pin B and PC 1 (7HH) connector AA/10D,
CONNECTOR (7559VC) pin A and PC 1 (7HH) connector AB/15C,
CONNECTOR (7559VC) pin D and PC 1 (7HH) connector AB/15D AWM 216104 and AWM 216104.

Subtask 21-61-00-710-093-A ** ON A/C NOT FOR ALL

B. Do the test as given in the Para. 3.A.

5. Close-up
Subtask 21-61-00-860-071-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:24:54 UTC