Check of the BSCU after BRAKES N/WS MINOR FAULT Caution message shown on the Upper Ecam Display Unit

TASK 32-46-00-040-001-A
Check of the BSCU after BRAKES N/WS MINOR FAULT Caution message shown on the Upper Ecam Display Unit

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.

WARNING: PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

1. Reason for the Job
MMEL 32-09-01B
BRAKES-N/WS MINOR FAULT ALERT
MMEL 32-09-01C
BRAKES-N/WS MINOR FAULT ALERT
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-009-A	Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page

3. Job Set-up
Subtask 32-46-00-860-067-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the panel 400VU, make sure that the L/G normal control lever is at down.
(2) On the panel 402VU, make sure that the A/SKID & NOSEWHEEL switch is at ON.
(3) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(4) On the MCDU, get the SYSTEM REPORT/TEST/L/G page (Ref. AMM TASK 31-32-00-860-009).

Subtask 32-46-00-941-061-A ** ON A/C NOT FOR ALL

B. Safety precautions
(1) Put a WARNING NOTICE(S) to tell persons not to:

operate the landing gear control lever,
operate the brake pedals,
pressurize the Green and the Yellow hydraulic systems.

Subtask 32-46-00-865-062-A ** ON A/C NOT FOR ALL

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33

4. Procedure
Subtask 32-46-00-740-056-B ** ON A/C NOT FOR ALL

A. Selection of the BSCU LAST LEG REPORT

NOTE: You must do this test before each flight when the BRAKES-N/WS MINOR FAULT caution message is shown on the Upper ECAM Display Unit.

NOTE: This test is for channel 1. For channel 2, use the indications between parentheses.

ACTION	RESULT
1.On the MCDU, push the line key adjacent to the BSCU 1(2) indication.	The BSCU CHAN 1(2) page comes into view.
2.Push the line key adjacent to the LAST LEG REPORT indication.	The BSCU CHAN 1(2)/LAST LEG REPORT page comes into view. Make sure that these CFDS fault messages are not shown: BRK ALTN PRESS TRANSDUCER (101GG) or (100GG) ABCU (95GG)/BRK NORM SEL VALVE XDCR (96GG)

5. Close-up
Subtask 32-46-00-860-068-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Make an entry in the logbook to tell persons that the BSCU is checked.
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 00:50:09 UTC