Fault Codes - Fault Isolation Procedure Index

TASK 21-31-00-810-803-A
Fault Codes - Fault Isolation Procedure Index

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 21-31-00-810-801-A	Cabin Pressure Controller 1 Fault
TSM TASK 21-31-00-810-804-A	Outflow Valve Auto Motor 1 or 2 Fault
TSM TASK 21-31-00-810-805-A	Outflow Valve Feedback Assembly Fault (CPC 1)
TSM TASK 21-31-00-810-806-A	Cabin Pressure Controller 2 Fault
TSM TASK 21-31-00-810-807-A	Outflow Valve Fault (05), (11), (24), (25), (26), (29), (60)
TSM TASK 21-31-00-810-826-A	Outflow Valve Feedback Assembly Fault (CPC 2)
TSM TASK 21-31-00-810-828-A	Outflow Valve Fault (33) (81)
TSM TASK 21-31-00-810-829-A	Outflow Valve Electronic Module 1 Fault (04)
TSM TASK 21-31-00-810-830-A	Outflow Valve Electronic Module 2 Fault (04)
TSM TASK 21-31-00-810-831-A	Outflow Valve Electronic Module 1 Fault (52)
TSM TASK 21-31-00-810-832-A	Outflow Valve Electronic Module 2 Fault (52)
TSM TASK 21-31-00-810-833-A	Outflow Valve Electronic Module 1 Fault (07), (31), (64), (65), (66), (67), (72), (76), (83), (87), (93)
TSM TASK 21-31-00-810-834-A	Outflow Valve Electronic Module 2 Fault (07), (31), (64), (65), (66), (67), (72), (76), (83), (87), (93)
TSM TASK 21-31-00-810-835-A	Outflow Valve Electronic Module 1 Fault (77)
TSM TASK 21-31-00-810-836-A	Outflow Valve Electronic Module 2 Fault (77)
TSM TASK 21-31-00-810-837-A	Cabin Pressure Controller 1 Fault (51)
TSM TASK 21-31-00-810-838-A	Cabin Pressure Controller 2 Fault (51)
TSM TASK 21-31-00-810-839-A	Cabin Pressure Controller 1 Fault (59)
TSM TASK 21-31-00-810-840-A	Cabin Pressure Controller 2 Fault (59)
TSM TASK 21-31-00-810-846-A	Cabin Pressure Controller 1 Fault (06)
TSM TASK 21-31-00-810-847-A	Cabin Pressure Controller 2 Fault (06)
TSM TASK 21-31-00-810-848-A	Outflow Valve Electronic Module 1 Fault (68)
TSM TASK 21-31-00-810-849-A	Outflow Valve Electronic Module 2 Fault (68)

3. Fault Confirmation
Subtask 21-31-00-710-052-A

A. Read-out
(1) For Class 1 Faults
(a) Do a read-out of the LAST LEG and the PREVIOUS LEG REPORTS of the cabin pressure control system.

NOTE: If a fault is detected, these reports show fault codes for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.

(2) For Class 3 Faults
(a) Do a read-out of the CLASS 3 FAULTS of the cabin pressure control system.

NOTE: If a fault is detected, these reports show fault codes for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.

(3) From the fault code/s given in the reports refer to the list which follows for the applicable fault isolation procedure.

4. Fault Isolation
Subtask 21-31-00-810-175-A

A. CFDS Message, Fault Code and Task Reference List
(1) Fault Codes (00), (01), (08), (12), (13), (18), (22), (34), (36), (37), (38), (39), (40), (41), (42), (43), (45), (46), (47), (48), (49), (53), (59), (61).
(a) For the CFDS messages and associated fault codes which follow,

PRESS CONTROLLER 1 (00),
PRESS CONTROLLER 1 (01),
PRESS CONTROLLER 1 (08),
PRESS CONTROLLER 1 (12),
PRESS CONTROLLER 1 (13),
PRESS CONTROLLER 1 (18),
PRESS CONTROLLER 1 (22),
PRESS CONTROLLER 1 (34),
PRESS CONTROLLER 1 (36),
PRESS CONTROLLER 1 (37),
PRESS CONTROLLER 1 (38),
PRESS CONTROLLER 1 (39),
PRESS CONTROLLER 1 (40),
PRESS CONTROLLER 1 (41),
PRESS CONTROLLER 1 (42),
PRESS CONTROLLER 1 (43),
PRESS CONTROLLER 1 (45),
PRESS CONTROLLER 1 (46),
PRESS CONTROLLER 1 (47),
PRESS CONTROLLER 1 (48),
PRESS CONTROLLER 1 (49),
PRESS CONTROLLER 1 (53),
PRESS CONTROLLER 1 (58),
PRESS CONTROLLER 1 (61),
refer to (Ref. TSM TASK 21-31-00-810-801).
PRESS CONTROLLER 2 (00),
PRESS CONTROLLER 2 (01),
PRESS CONTROLLER 2 (08),
PRESS CONTROLLER 2 (12),
PRESS CONTROLLER 2 (13),
PRESS CONTROLLER 2 (18),
PRESS CONTROLLER 2 (22),
PRESS CONTROLLER 2 (34),
PRESS CONTROLLER 2 (36),
PRESS CONTROLLER 2 (37),
PRESS CONTROLLER 2 (38),
PRESS CONTROLLER 2 (39),
PRESS CONTROLLER 2 (40),
PRESS CONTROLLER 2 (41),
PRESS CONTROLLER 2 (42),
PRESS CONTROLLER 2 (43),
PRESS CONTROLLER 2 (45),
PRESS CONTROLLER 2 (46),
PRESS CONTROLLER 2 (47),
PRESS CONTROLLER 2 (48),
PRESS CONTROLLER 2 (49),
PRESS CONTROLLER 2 (53),
PRESS CONTROLLER 2 (58),
PRESS CONTROLLER 2 (61),
refer to (Ref. TSM TASK 21-31-00-810-806).

(2) Fault Code (04)
(a) For the CFDS message and associated fault code which follows,

OUTFLOW VALVE ELEC 1 (04),
refer to (Ref. TSM TASK 21-31-00-810-829).
OUTFLOW VALVE ELEC 2 (04),
refer to (Ref. TSM TASK 21-31-00-810-830).

(3) Fault Codes (05), (11), (24), (25), (26), (29), (60).
(a) For the CFDS message and associated fault code which follows,

OUTFLOW VALVE (05),
OUTFLOW VALVE (11),
OUTFLOW VALVE (24),
OUTFLOW VALVE (25),
OUTFLOW VALVE (26),
OUTFLOW VALVE (29),
OUTFLOW VALVE (60),
refer to (Ref. TSM TASK 21-31-00-810-807).

(4) Fault Code (06)
(a) For the CFDS messages and associated fault code which follows,

PRESS CONTROLLER 1 (06),
refer to (Ref. TSM TASK 21-31-00-810-846).
PRESS CONTROLLER 2 (06),
refer to (Ref. TSM TASK 21-31-00-810-847).

(5) Fault Codes (33), (81)
(a) For the CFDS messages and associated fault codes which follow,

OUTFLOW VALVE (33),
OUTFLOW VALVE (81),
refer to (Ref. TSM TASK 21-31-00-810-828).

(6) Fault Code (51)
(a) For the CFDS messages and associated fault code which follows,

PRESS CONTROLLER 1 (51),
refer to (Ref. TSM TASK 21-31-00-810-837).
PRESS CONTROLLER 2 (51),
refer to (Ref. TSM TASK 21-31-00-810-838).

(7) Fault Code (52)
(a) For the CFDS messages and associated fault code which follows,

OUTFLOW VALVE ELEC 1 (52),
refer to (Ref. TSM TASK 21-31-00-810-831).
OUTFLOW VALVE ELEC 2 (52),
refer to (Ref. TSM TASK 21-31-00-810-832).

(8) Fault Code (59)
(a) For the CFDS messages and associated fault code which follows,

PRESS CONTROLLER 1 (59),
refer to (Ref. TSM TASK 21-31-00-810-839).
PRESS CONTROLLER 2 (59),
refer to (Ref. TSM TASK 21-31-00-810-840).

(9) Fault Codes (07), (64), (65), (66), (67), (72), (76), (83), (87) and (93)
(a) For the CFDS messages and associated fault codes which follow,

OUTFLOW VALVE ELEC 1 (07),
OUTFLOW VALVE ELEC 1 (64),
OUTFLOW VALVE ELEC 1 (65),
OUTFLOW VALVE ELEC 1 (66),
OUTFLOW VALVE ELEC 1 (67),
OUTFLOW VALVE ELEC 1 (72),
OUTFLOW VALVE ELEC 1 (76),
OUTFLOW VALVE ELEC 1 (83),
OUTFLOW VALVE ELEC 1 (87),
OUTFLOW VALVE ELEC 1 (93),
refer to (Ref. TSM TASK 21-31-00-810-833).

(b) For the CFDS messages and associated fault codes which follow,

OUTFLOW VALVE ELEC 2 (07),
OUTFLOW VALVE ELEC 2 (64),
OUTFLOW VALVE ELEC 2 (65),
OUTFLOW VALVE ELEC 2 (66),
OUTFLOW VALVE ELEC 2 (67),
OUTFLOW VALVE ELEC 2 (72),
OUTFLOW VALVE ELEC 2 (76),
OUTFLOW VALVE ELEC 2 (83),
OUTFLOW VALVE ELEC 2 (87),
OUTFLOW VALVE ELEC 2 (93),
refer to (Ref. TSM TASK 21-31-00-810-834).

(10) Fault Code (68)
(a) For the CFDS messages and associated fault code which follows,

OUTFLOW VALVE ELEC 1 (68),
refer to (Ref. TSM TASK 21-31-00-810-848).
OUTFLOW VALVE ELEC 2 (68),
refer to (Ref. TSM TASK 21-31-00-810-849).

(11) Fault Code (77)
(a) For the CFDS messages and associated fault code which follows,

OUTFLOW VALVE ELEC 1 (77),
refer to (Ref. TSM TASK 21-31-00-810-835).
OUTFLOW VALVE ELEC 2 (77),
refer to (Ref. TSM TASK 21-31-00-810-836).

(12) Fault Code (78)
(a) For the CFDS messages and associated fault code which follows,

OUTFLOW VALVE ELEC 1 (78) or,
OUTFL.V FEEDB ASSY 1 (78),
refer to (Ref. TSM TASK 21-31-00-810-805).
OUTFLOW VALVE ELEC 2 (78) or,
OUTFL.V FEEDB ASSY 2 (78),
refer to (Ref. TSM TASK 21-31-00-810-826).

(13) Fault Code (88)
(a) For the CFDS messages and associated fault code which follows,

OUTFL.V AUTO MOTOR 1 (88),
OUTFL.V AUTO MOTOR 2 (88),
refer to (Ref. TSM TASK 21-31-00-810-804).

[Rev.8 from Aug 2018] 2026.04.04 04:24:41 UTC