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0% found this document useful (0 votes)

61 views68 pages

FFCCCC

Vvvvcvc

Uploaded by

Syed Zeeshan

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

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You are on page 1/ 68

Customer : THY Manual : TSM

Type : A318/A319/A320/A321 Selected applicability : 151-155

Rev. Date : May 01, 2017
28-15-00 - INTERCELL TRANSFER

** ON A/C ALL

28-15-00 - INTERCELL TRANSFER

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

28-15-00 PB 201 CONF 00 - INTERCELL TRANSFER - FAULT ISOLATION PROCEDURES

TASK 28-15-00-810-801-A
Intercell XFR System Failure (Left Wing) - Both Valves Remain Shut At Fuel Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· Left Wing Forward Intercell XFR VALVE (27QM/70QM/9QP)
· Left Wing Rear Intercell XFR VALVE (28QM/71QM/11QP)
2 Job Set-up Information
A. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-053-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-050-A
B. Do the FLSS BITE Test Ref. AMM 28-46-00-740-001 .

NOTE: If the aircraft is already supplied with electrical power, reset the FQIC. (Open, then after 5
seconds, close the two C/Bs 1QT and 2QT). The FLSS BITE test is carried out once a short time
after power up. After a two minute delay to allow the FQIC to do the BITE test, continue.

NOTE: The intercell transfer valves (ICTVs) are not tested by the COMMAND FLSS BITE option. (This
option only available with 07 FQIC Software Standard).

Print Date: July 13, 2017 Page 1 of 68

© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
Customer : THY Manual : TSM
Type : A318/A319/A320/A321 Selected applicability : 151-155
Rev. Date : May 01, 2017
28-15-00 - INTERCELL TRANSFER

NOTE: The ICTVs are motor driven and the power for these circuits is derived from the main power. The
ICTVs are immobilized on battery power.

(1) If failures are detected examine the FLSS STATUS page for any of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 15QJ2
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(2) If none of the above messages are shown:
· go to step Para 4.
(3) If one or more of the messages identified in Para B.(1) are shown:
· trouble shoot the LRU(s) before you start more steps.
Do the trouble shooting procedure related to the failure message.
4. Fault Isolation
Subtask 28-15-00-810-050-A
A. Set the MCDU to SYSTEM REPORT/TEST (FUEL), then for:
· 06 FQIC Software Standard go to the FQIS STATUS page
· 07 FQIC Software Standard go to the FLSS STATUS page.
(1) If both the XFR Valve messages are shown:
· (Ref. TSM 28-15-00-810-803) for the Left Wing Forward Intercell XFR VALVE (27QM/70QM/
9QP) message
· (Ref. TSM 28-15-00-810-804) for the Left Wing Rear Intercell XFR VALVE (28QM/71QM/11QP)
message.

TASK 28-15-00-810-802-A
Intercell XFR System Failure (Right Wing) - Both Valves Remain Shut At Fuel Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· Right Wing Forward Intercell XFR VALVE (29QM/72QM/10QP)
· Right Wing Rear Intercell XFR VALVE (30QM/73QM/12QP)
2 Job Set-up Information
A. Referenced Information

REFERENCE DESIGNATION
(Ref. 28-15-00-810-805-A). Intercell XFR Valve 29QM/72QM/10QP (Right Forward) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-806-A). Intercell XFR Valve 30QM/73QM/12QP (Right Rear) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-865-054-A
A. Table of the circuit breakers used in this procedure:

Print Date: July 13, 2017 Page 2 of 68

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-051-A
B. Do the FLSS BITE Test Ref. AMM 28-46-00-740-001 .

NOTE: The intercell transfer valves (ICTVs) are not tested by the COMMAND FLSS BITE option. (This
option only available with 07 FQIC Software Standard).

NOTE: The ICTVs are motor driven and the power for these circuits is derived from the main power. The
ICTVs are immobilized on battery power.

(1) If failures are detected examine the FLSS STATUS page for any of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 15QJ2
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(2) If none of the above messages are shown:
· go to step Para 4.
(3) If one or more of the messages identified in Para B.(1) are shown:
· trouble shoot the LRU(s) before you start more steps.
Do the trouble shooting procedure related to the failure message.
4. Fault Isolation
Subtask 28-15-00-810-051-A
A. Set the MCDU to SYSTEM REPORT/TEST (FUEL), then for:
· 06 FQIC Software Standard go to the FQIS STATUS page
· 07 FQIC Software Standard go to the FLSS STATUS page.
(1) If both the XFR Valve messages are shown:
· (Ref. TSM 28-15-00-810-805) for the Right Wing Forward Intercell XFR VALVE (29QM/72QM/
10QP) message
· (Ref. TSM 28-15-00-810-806) for the Right Wing Rear Intercell XFR VALVE (30QM/73QM/
12QP) message.

TASK 28-15-00-810-803-A
Intercell XFR VALVE 27QM/70QM/9QP (Left Forward) Fault - Stays Closed When The Fuel In The Inner-cell Is At
Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

Print Date: July 13, 2017 Page 3 of 68

WARNING: WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT
THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR IN-
TRINSICALLY SAFE TEST EQUIPMENT: EN50020, UL913 OR EQUIVALENT). TEST EQUIP-
MENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L FWD SPAR ( 9QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. ESPM 20-53-21
Ref. AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer Valves
Ref. ASM 28-15-02
Ref. AMM 28-15-51-000-001 Removal of the Actuator
Ref. AMM 28-15-51-400-001 Installation of the Actuator
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-865-055-A
A. Table of the circuit breakers referred to in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27
121VU FUEL/XFR VALVE2/WING/R 4QP M23
121VU FUEL/XFR VALVE2/WING/L 3QP M22

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-052-A
B. Test
(1) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 16QJ2

Print Date: July 13, 2017 Page 4 of 68

· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (2)

· is shown, trouble shoot the LRU(s) before you do step (2). Refer to the Fault Symptoms List/
28-CFDS for the related Task number.
(2) Do the Functional BITE Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: The COMMAND FLSS BITE option does not test the intercell transfer valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 206PP,
28VDC, BUS 2 Ref. ASM 28-15-02. The ICTVs will not operate on battery power.

(a) Examine the FLSS STATUS page.

Look for the (left wing forward ICTV) message XFR VALVE 27QM/70QM/9QP.
(b) If the message:
· is shown, do Para. 4.A.

· is not shown, no work steps are necessary.

4. Fault Isolation
Subtask 28-15-00-810-052-A
A. Procedure
(1) Make sure that the C/B 3QP is closed.
(2) Open the C/B 4QP.
(3) Get access to the ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) Ref. AMM 28-15-51-000-
001 .
(4) Disconnect the electrical connector 9QP-A from the ACTUATOR-TRANSFER VALVE, L FWD SPAR
(9QP).
(5) Do a test, with a MULTIMETER - STANDARD, to see if 28VDC is available at pin A of the connector
9QP-A Ref. ASM 28-15-02.
(a) If the 28VDC:
· is available, do step (6)

· is not available, continue at step (7).

(6) Do a check of and replace, if necessary, the ACTUATOR-TRANSFER VALVE, L FWD
SPAR ( 9QP ) Ref. AMM 28-15-51-000-001 and Ref. AMM 28-15-51-400-001 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace all the unserviceable items found in (a).
(c) Do the test given in Para. 3.B.(2).
(7) Close the C/B 4QP.
(8) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-L WING TK LOW
LEVEL CHANNEL B (7QP) terminals A2 and X1 Ref. ASM 28-15-02.
(a) If the 28VDC:
· is not available, do step (9)

Print Date: July 13, 2017 Page 5 of 68

· is available, continue at step (10).

(9) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-L WING TK LOW
LEVEL CHANNEL B (7QP) and the C/B-FUEL/XFR VALVE 2/WING/L (3QP).
(a) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(b) Do the test given in Para. 3.B.(2).
(10) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-R WING TK LOW
LEVEL CHANNEL A (8QP) terminals A2 and X1 Ref. ASM 28-15-02.
(a) If the 28VDC:
· is not available, do step (11)

· is available, continue at step (12).

(11) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-R WING TK LOW
LEVEL CHANNEL A (8QP) and the C/B-FUEL/XFR VALVE 2/WING/R (4QP).
(a) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(b) Do the test given in Para. 3.B.(2).
(12) If the fault continues:
(a) Do a check of and replace, if necessary, the relays that follow:
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP) .
(b) Do the test given in Para. 3.B.(2).
(13) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between:
· the ACTUATOR connector 9QP-A, pin A and the RELAY 7QP, terminal A3
· the ACTUATOR connector 9QP-A, pin A and the RELAY 8QP, terminal B3
· the RELAY 7QP, terminal A1 and the RELAY 8QP, terminal B2
· the RELAY 7QP, terminal X2 and the RELAY 14QP, terminal A
· the RELAY 8QP, terminal X2 and the RELAY 14QP, terminal B
· the RELAY 14QP, terminal 1 and the FLSCU-2 rack connector 9QJ-AA, pin 11B
· the RELAY 14QP, terminal 3 and the FLSCU-1 rack connector 7QJ-AA, pin 11B.
(b) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(c) Do the test given in Para. 3.B.(2).

TASK 28-15-00-810-804-A
Intercell XFR Valve 28QM/71QM/11QP (Left Rear) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low
Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L REAR SPAR ( 11QP )

Print Date: July 13, 2017 Page 6 of 68

· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP)
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. ESPM 20-53-21
Ref. AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer Valves
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-865-056-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13
49VU FUEL/XFR VALVE1/WING/R 2QP A11
49VU FUEL/XFR VALVE1/WING/L 1QP A10

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-053-A
B. Test
(1) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 15QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (2)

Print Date: July 13, 2017 Page 7 of 68

NOTE: The COMMAND FLSS BITE option does not test the Intercell Transfer Valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 801PP,
28VDC, ESS BUS/SHEDDABLE Ref. ASM 28-15-01. The ICTVs will not operate on battery
power.

(a) Examine the FLSS STATUS page.

Look for the (left wing rear ICTV) message XFR VALVE 28QM/71QM/11QP.
(b) If the message:
· is shown, do Para. 4.A.

· is not shown, no work steps are necessary.

4. Fault Isolation
Subtask 28-15-00-810-053-A
A. Procedure
(1) Make sure that the C/B 1QP is closed.
(2) Open the C/B 2QP.
(3) Get access to the ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) Ref. AMM 28-15-51-000-
002 .
(4) Disconnect the electrical connector 11QP-A from the ACTUATOR-TRANSFER VALVE, L REAR
SPAR (11QP).
(5) Do a test, with a MULTIMETER - STANDARD, to see if 28VDC is available at pin A of the connector
11QP-A Ref. ASM 28-15-01.
(a) If the 28VDC:
· is available, do step (6)

· is not available, continue at step (7).

(6) Do a check of and replace, if necessary, the ACTUATOR-TRANSFER VALVE, L REAR
SPAR ( 11QP ) Ref. AMM 28-15-51-000-002 and Ref. AMM 28-15-51-400-002 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace all the unserviceable items found in (a).
(c) Do the test given in Para. 3.B.(2).
(7) Close the C/B 2QP.
(8) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-L WING TK LOW
LEVEL CHANNEL A (5QP) terminals A2 and X1 Ref. ASM 28-15-01.
(a) If the 28VDC:
· is not available, do step (9)

· is available, continue at step (10).

Print Date: July 13, 2017 Page 8 of 68

(10) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-R WING TK LOW
LEVEL CHANNEL B (6QP) terminals A2 and X1 Ref. ASM 28-15-01.
(a) If the 28VDC:
· is not available, do step (11)

· is available, continue at step (12).

(11) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between the RELAY-R WING TK LOW
LEVEL CHANNEL B (6QP) and the C/B-FUEL/XFR VALVE 1/WING/R (2QP).
(a) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(b) Do the test given in Para. 3.B.(2).
(12) If the fault continues:
(a) Do a check of and replace, if necessary, the relays that follow:
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) .
(b) Do the test given in Para. 3.B.(2).
(13) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between:
· the ACTUATOR connector 11QP-A, pin A and the RELAY 5QP, terminal A3
· the ACTUATOR connector 11QP-A, pin A and the RELAY 6QP, terminal B3
· the RELAY 5QP, terminal A1 and the RELAY 6QP, terminal B2
· the RELAY 5QP, terminal X2 and the RELAY 13QP, terminal A
· the RELAY 6QP, terminal X2 and the RELAY 13QP, terminal B
· the RELAY 13QP, terminal 1 and the FLSCU-1 rack connector 7QJ-AA, pin 5A
· the RELAY 13QP, terminal 3 and the FLSCU-2 rack connector 9QJ-AA, pin 5A.
(14) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(15) Do the test given in Para. 3.B.(2).

TASK 28-15-00-810-805-A
Intercell XFR Valve 29QM/72QM/10QP (Right Forward) Fault - Stays Closed When The Fuel In The Inner-cell Is At
Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R FWD SPAR ( 10QP )
· aircraft wiring
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

Print Date: July 13, 2017 Page 9 of 68

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-057-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27
121VU FUEL/XFR VALVE2/WING/R 4QP M23
121VU FUEL/XFR VALVE2/WING/L 3QP M22

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-054-A
B. Test
(1) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (2)

NOTE: The COMMAND FLSS BITE option does not test the Intercell Transfer Valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 206PP,
28VDC, BUS 2 Ref. ASM 28-15-02 . The ICTVs will not operate on battery power.

(a) Examine the FLSS STATUS page.

Print Date: July 13, 2017 Page 10 of 68

Look for the (right wing forward ICTV) message XFR VALVE 29QM/72QM/10QP.
(b) If the message:
· is shown, do Para. 4.A.

· is not shown, no work steps are necessary.

4. Fault Isolation
Subtask 28-15-00-810-054-A
A. Procedure
(1) Make sure that the C/B 4QP is closed.
(2) Open the C/B 3QP.
(3) Get access to the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) Ref. AMM 28-15-51-000-
001 .
(4) Disconnect the electrical connector 10QP-A from the ACTUATOR-TRANSFER VALVE, R FWD
SPAR (10QP).
(5) Do a test, with a MULTIMETER - STANDARD, to see if 28VDC is available at pin A of the connector
10QP-A Ref. ASM 28-15-02.
(a) If the 28VDC:
· is available, do step (6)

· is not available, continue at step (7).

(6) Do a check of and replace, if necessary, the ACTUATOR-TRANSFER VALVE, R FWD
SPAR ( 10QP ) Ref. AMM 28-15-51-000-001 and Ref. AMM 28-15-51-400-001 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace all the unserviceable items found in (a).
(c) Do the test given in Para. 3.B.(2).
(7) Close the C/B 3QP.
(8) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-L WING TK LOW
LEVEL CHANNEL B (7QP) terminals A2 and X1 Ref. ASM 28-15-02.
(a) If the 28VDC:
· is not available, do step (9)

· is available, continue at step (10).

· is available, continue at step (12).

(11) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-R WING TK LOW
LEVEL CHANNEL A (8QP) and the C/B-FUEL/XFR VALVE 2/WING/R (4QP).

Print Date: July 13, 2017 Page 11 of 68

(a) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(b) Do the test given in Para. 3.B.(2).
(12) If the fault continues:
(a) Do a check of and replace, if necessary, the relays that follow:
· the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· the RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP) .
(b) Do the test given in Para. 3.B.(2).
(13) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between:
· the ACTUATOR connector 10QP-A, pin A and the RELAY 8QP, terminal A3
· the ACTUATOR connector 10QP-A, pin A and the RELAY 7QP, terminal B3
· the RELAY 8QP, terminal A1 and the RELAY 7QP, terminal B2
· the RELAY 7QP, terminal X2 and the RELAY 14QP, terminal A
· the RELAY 8QP, terminal X2 and the RELAY 14QP, terminal B
· the RELAY 14QP, terminal 1 and the FLSCU-2 rack connector 9QJ-AA, pin 11B
· the RELAY 14QP, terminal 3 and the FLSCU-1 rack connector 7QJ-AA, pin 11B.
(b) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(c) Do the test given in Para. 3.B.(2).

TASK 28-15-00-810-806-A
Intercell XFR Valve 30QM/73QM/12QP (Right Rear) Fault - Stays Closed When The Fuel In The Inner-cell Is At
Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R REAR SPAR ( 12QP )
· aircraft wiring
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP)
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. ESPM 20-53-21
Ref. AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer Valves

Print Date: July 13, 2017 Page 12 of 68

REFERENCE DESIGNATION
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-865-058-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13
49VU FUEL/XFR VALVE1/WING/R 2QP A11
49VU FUEL/XFR VALVE1/WING/L 1QP A10

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-055-A
B. Test
(1) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 15QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (2)

NOTE: The COMMAND FLSS BITE option does not test the Intercell Transfer Valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 801PP,
28VDC, ESS BUS/SHEDDABLE Ref. ASM 28-15-01. The ICTVs will not operate on battery
power.

(a) Examine the FLSS STATUS page.

Look for the (right wing rear ICTV) message XFR VALVE 30QM/73QM/12QP.
(b) If the message:
· is shown, do Para. 4.A.

· is not shown, no work steps are necessary.

4. Fault Isolation
Subtask 28-15-00-810-055-A

Print Date: July 13, 2017 Page 13 of 68

A. Procedure
(1) Make sure that the C/B 2QP is closed.
(2) Open the C/B 1QP.
(3) Get access to the ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) Ref. AMM 28-15-51-000-
002 .
(4) Disconnect the electrical connector 12QP-A from the ACTUATOR-TRANSFER VALVE, R REAR
SPAR (12QP).
(5) Do a test, with a MULTIMETER - STANDARD, to see if 28VDC is available at pin A of the connector
12QP-A Ref. ASM 28-15-01.
(a) If the 28VDC:
· is available, do step (6)

· is not available, continue at step (7).

(6) Do a check of and replace, if necessary, the ACTUATOR-TRANSFER VALVE, R REAR
SPAR ( 12QP ) Ref. AMM 28-15-51-000-002 and Ref. AMM 28-15-51-400-002 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace all the unserviceable items found in (a).
(c) Do the test given in Para. 3.B.(2).
(7) Close the C/B 1QP.
(8) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-L WING TK LOW
LEVEL CHANNEL A (5QP) terminals A2 and X1 Ref. ASM 28-15-01.
(a) If the 28VDC:
· is not available, do step (9)

· is available, continue at step (10).

(9) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between the RELAY-L WING TK LOW
LEVEL CHANNEL A (5QP) and the C/B-FUEL/XFR VALVE 1/WING/L (1QP).
(a) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(b) Do the test given in Para. 3.B(2).
(10) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-R WING TK LOW
LEVEL CHANNEL B (6QP) terminals A2 and X1 Ref. ASM 28-15-01.
(a) If the 28VDC:
· is not available, do step (11)

· is available, continue at step (12).

Print Date: July 13, 2017 Page 14 of 68

· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) .

(b) Do the test given in Para. 3.B.(2).
(13) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between:
· the ACTUATOR connector 12QP-A, pin A and the RELAY 6QP, terminal A3
· the ACTUATOR connector 12QP-A, pin A and the RELAY 5QP, terminal B3
· the RELAY 6QP, terminal A1 and the RELAY 5QP, terminal B2
· the RELAY 5QP, terminal X2 and the RELAY 13QP, terminal A
· the RELAY 6QP, terminal X2 and the RELAY 13QP, terminal B
· the RELAY 13QP, terminal 1, and the FLSCU-1 rack connector 7QJ-AA, pin 5A
· the RELAY 13QP, terminal 3, and the FLSCU-2 rack connector 9QJ-AA, pin 5A.
(b) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(c) Do the test given in Para. 3.B.(2).

TASK 28-15-00-810-807-A
Intercell XFR Valve Failure (Left Forward) - Open When Fuel Not Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L FWD SPAR ( 9QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 103VU
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-059-A

Print Date: July 13, 2017 Page 15 of 68

A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-056-A
B. Test
(1) Read the:
(a) Paragraph titled Intermittent fault (Ref. TSM, 00-INTRO, 7.F(2)(b)2_).
(b) Technical Follow-Up (Ref. TFU 28.15.00.003).
(2) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (3)

· is shown, trouble shoot the identified LRU(s) before you do step (3).
(3) Do the Functional BITE Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: The COMMAND FLSS BITE option does not test the intercell transfer valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 206PP,
28VDC, BUS 2 Ref. ASM 28-15-02. The ICTVs will not operate on battery power.

(a) Examine the FLSS STATUS page.

Look for the (left wing forward ICTV) message XFR VALVE 27QM/70QM/9QP.
(b) If the message:
· is not shown, go to step (4)

· is shown, do Para. 4.A.

Print Date: July 13, 2017 Page 16 of 68

(2) Disconnect the electrical connector 9QP-A from the ACTUATOR-TRANSFER VALVE, L FWD SPAR
(9QP).
(3) With a MULTIMETER - STANDARD check to see if 28VDC is available at pin B of the actuator
electrical supply cable connnector Ref. ASM 28-15-02.
(4) If the 28VDC is available check/replace the ACTUATOR-TRANSFER VALVE, L FWD
SPAR ( 9QP ) , Ref. AMM 28-15-51-000-001 , and Ref. AMM 28-15-51-400-001 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(5) If the 28VDC is not available at pin B of the actuator electrical supply cable connector 9QP-A.
(a) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) terminals A2, X1, and the C/
B-FUEL/XFR VALVE 2/WING/L (3QP).
(c) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(d) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) terminals A2, X1, and the C/B-FUEL/
XFR VALVE 2/WING/R (4QP).
(f) Repair all the unserviceable wiring and connectors.
(6) Do the test given in Para 3.B.
(7) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
103VU .
(8) Do the test given in Para 3.B.
(9) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
103VU .
(10) Do the test given in Para 3.B.
(11) If the fault continues check/replace the RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
103VU .
(12) Do the test given in Para 3.B.
(13) If the fault continues do a wiring check Ref. ASM 28-15-02 of the aircraft wiring between:
· the pin B, ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) and the terminal B1, RELAY-R
WING TK LOW LEVEL CHANNEL A (8QP)
· the terminal B2, RELAY-R WING TK LOW LEVEL CHANNEL A(8QP) and the terminal A1, RELAY-
L WING TK LOW LEVEL CHANNEL B (7QP)
· the terminal X2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the terminal A, RELAY-L
OR R FWD XFR VALVE OPEN LATCH (14QP)
· the terminal X2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the terminal B, RELAY-
L OR R FWD XFR VALVE OPEN LATCH (14QP)
· the terminal 1, RELAY-L OR R FWD OPEN LATCH (14QP) and the pin 11B, connector AA,
FLSCU-2 (9QJ)

Print Date: July 13, 2017 Page 17 of 68

· the terminal 3, RELAY-L OR R FWD OPEN LATCH (14QP) and the pin 11B, connector AA,
FLSCU-1 (7QJ)
· the pin 1C, connector AA, FLSCU-1 (7QJ) and the C/B-FUEL/XFR VALVE 2/WING/R (4QP)
· the pin 1C, connector AA, FLSCU-2 (9QJ) and the C/B-FUEL/XFR VALVE 2/WING/L (3QP).
(14) Repair all the unserviceable wiring and connectors.
(15) Do the test given in Para 3.B.

TASK 28-15-00-810-808-A
Intercell XFR Valve Failure (Left Rear) - Open When Fuel Not Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L REAR SPAR ( 11QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) 103VU
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-060-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

Print Date: July 13, 2017 Page 18 of 68

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-057-A
B. Test
(1) Read the:
(a) Paragraph titled Intermittent fault (Ref. TSM, 00-INTRO, 7.F(2)(b)2_).
(b) Technical Follow-Up (Ref. TFU 28.15.00.003).
(2) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 15QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (3)

· is shown, trouble shoot the identified LRU(s) before you do step (3).
(3) Do the Functional BITE Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: The COMMAND FLSS BITE option does not test the intercell transfer valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 801PP,
28VDC, ESS BUS/SHEDDABLE Ref. ASM 28-15-01. The ICTVs will not operate on battery
power

(a) Examine the FLSS STATUS page.

Look for the (left wing rear ICTV) message XFR VALVE 28QM/71QM/11QP.
(b) If the message:
· is not shown, go to step (4)

· is shown, do Para. 4.A.

Print Date: July 13, 2017 Page 19 of 68

(4) If the 28VDC is available check/replace the ACTUATOR-TRANSFER VALVE, L REAR

SPAR ( 11QP ) , Ref. AMM 28-15-51-000-002 , and Ref. AMM 28-15-51-400-002 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(5) If the 28VDC is not available at pin B of the actuator electrical supply cable connector 11QP-A.
(a) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) terminals A2, X1, and the C/
B-FUEL/XFR VALVE 1/WING/L (1QP).
(c) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(d) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) terminals A2, X1, and the C/B-FUEL/
XFR VALVE 1/WING/R (2QP).
(f) Repair all the unserviceable wiring and connectors.
(6) Do the test given in Para 3.B.
(7) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
103VU .
(8) Do the test given in Para 3.B.
(9) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
103VU .
(10) Do the test given in Para 3.B.
(11) If the fault continues check/replace the RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP)
103VU .
(12) Do the test given in Para 3.B.
(13) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between:
· the pin B, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal B1, RELAY-R
WING TK LOW LEVEL CHANNEL B (6QP)
· the terminal B2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the terminal A1,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· the terminal X2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) and the terminal A, RELAY-L
OR R REAR XFR VALVE OPEN LATCH (13QP)
· the terminal X2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the terminal B, RELAY-
L OR R REAR XFR VALVE OPEN LATCH (13QP)
· the terminal 1, RELAY-L OR R REAR OPEN LATCH (13QP) and the pin 5A, connector AA,
FLSCU-1 (7QJ)
· the terminal 3, RELAY-L OR R REAR OPEN LATCH (13QP) and the pin 5A, connector AA,
FLSCU-2 (9QJ)
· the pin 1A, connector AA, FLSCU-1 (7QJ) and the C/B-FUEL/XFR VALVE 1/WING/L (1QP)
· the pin 1A, connector AA, FLSCU-2 (9QJ) and the C/B-FUEL/XFR VALVE 1/WING/R (2QP).
(14) Repair all the unserviceable wiring and connectors.

Print Date: July 13, 2017 Page 20 of 68

(15) Do the test given in Para 3.B.

TASK 28-15-00-810-809-A
Intercell XFR Valve Failure (Right Forward) - Open When Fuel Not Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R FWD SPAR ( 10QP )
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 103VU
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP) 103VU
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-061-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-058-A
B. Test
(1) Read the:

Print Date: July 13, 2017 Page 21 of 68

(a) Paragraph titled Intermittent fault (Ref. TSM, 00-INTRO, 7.F(2)(b)2_).

(b) Technical Follow-Up (Ref. TFU 28.15.00.003).
(2) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (3)

· is shown, trouble shoot the identified LRU(s) before you do step (3).
(3) Do the Functional BITE Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: The COMMAND FLSS BITE option does not test the intercell transfer valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 206PP,
28VDC, BUS 2 Ref. ASM 28-15-02. The ICTVs will not operate on battery power.

(a) Examine the FLSS STATUS page.

Look for the (right wing forward ICTV) message XFR VALVE 29QM/72QM/10QP.
(b) If the message:
· is not shown, go to step (4)

· is shown, do Para. 4.A.

Print Date: July 13, 2017 Page 22 of 68

· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)

· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(b) If the 28VDC is not available do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between
the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) terminals A2, X1, and the C/B-FUEL/
XFR VALVE 2/WING/L (3QP).
(c) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(d) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP).
(e) If the 28VDC is not available do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between
the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) terminals A2, X1, and the C/B-FUEL/
XFR VALVE 2/WING/R (4QP).
(f) Repair all the unserviceable wiring and connectors.
(6) Do the test given in Para 3.B.
(7) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
103VU .
(8) Do the test given in Para 3.B.
(9) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
103VU .
(10) Do the test given in Para 3.B.
(11) If the fault continues check/replace the RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
103VU .
(12) Do the test given in Para 3.B.
(13) If the fault continues do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between:
· the pin B, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal B1, RELAY-L
WING TK LOW LEVEL CHANNEL B (7QP)
· the terminal B2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the terminal A1, RELAY-
R WING TK LOW LEVEL CHANNEL A (8QP)
· the terminal X2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the terminal A, RELAY-L
OR R FWD XFR VALVE OPEN LATCH (14QP)
· the terminal X2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the terminal B, RELAY-
L OR R FWD XFR VALVE OPEN LATCH (14QP)
· the terminal 1, RELAY-L OR R FWD OPEN LATCH (14QP) and the pin 11B, connector AA,
FLSCU-2 (9QJ)
· the terminal 3, RELAY-L OR R FWD OPEN LATCH (14QP) and the pin 11B, connector AA,
FLSCU-1 (7QJ)
· the pin 1C, connector AA, FLSCU-1 (7QJ) and the C/B-FUEL/XFR VALVE 2/WING/R (4QP)
· the pin 1C, connector AA, FLSCU-2 (9QJ) and the C/B-FUEL/XFR VALVE 2/WING/L (3QP).
(14) Repair all the unserviceable wiring and connectors.
(15) Do the test given in Para 3.B.

TASK 28-15-00-810-810-A
Intercell XFR Valve Failure (Right Rear) - Open When Fuel Not Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

WARNING: WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT
THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR IN-

Print Date: July 13, 2017 Page 23 of 68

TRINSICALLY SAFE TEST EQUIPMENT: EN50020, UL913 OR EQUIVALENT). TEST EQUIP-

MENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R REAR SPAR ( 12QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) 103VU
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

3. Fault Confirmation
Subtask 28-15-00-865-062-A
A. Table of the circuit breakers used in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-059-A
B. Test
(1) Read the:
(a) Paragraph titled Intermittent fault (Ref. TSM, 00-INTRO, 7.F(2)(b)2_).
(b) Technical Follow-Up (Ref. TFU 28.15.00.003).
(2) Do the Functional BITE Test (of the FLSS) Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 15QJ2
· FLSCU1 7QJ

Print Date: July 13, 2017 Page 24 of 68

· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (3)

· is shown, trouble shoot the identified LRU(s) before you do step (3).
(3) Do the Functional BITE Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: The COMMAND FLSS BITE option does not test the intercell transfer valves (ICTVs).

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied from 801PP,
28VDC, ESS BUS/SHEDDABLE Ref. ASM 28-15-01. The ICTVs will not operate on battery
power.

(a) Examine the FLSS STATUS page.

Look for the (left wing rear ICTV) message XFR VALVE 30QM/73QM/12QP.
(b) If the message:
· is not shown, go to step (4)

· is shown, do Para. 4.A.

(4) AIRBUS recommends:
(a) If the two functional tests (in steps (2) and (3)) show NO FAULTS, the FLSCU-1 7QJ and the
FLSCU-2 9QJ are not replaced.
(b) No more work steps are necessary.
4. Fault Isolation
Subtask 28-15-00-810-059-A
A. Procedure
(1) Get access to the ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) Ref. AMM 28-15-51-000-
002 .
(2) Disconnect the electrical connector 12QP-A from the ACTUATOR-TRANSFER VALVE, R REAR
SPAR (12QP).
(3) With a MULTIMETER - STANDARD check to see if 28VDC is available at pin B of the actuator
electrical supply cable connector Ref. ASM 28-15-01.
(4) If the 28VDC is available check/replace the ACTUATOR-TRANSFER VALVE, R REAR
SPAR ( 12QP ) , Ref. AMM 28-15-51-000-002 , and Ref. AMM 28-15-51-400-002 .
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(5) If the 28VDC is not available at pin B of the actuator electrical supply cable connector 12QP-A.
(a) Check with a multimeter to make sure that 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) terminals A2, X1, and the C/
B-FUEL/XFR VALVE 1/WING/L (1QP).
(c) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(d) Check with a multimeter to make sure that 28VDC is available at:

Print Date: July 13, 2017 Page 25 of 68

· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)

· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) terminals A2, X1, and the C/B-FUEL/
XFR VALVE 1/WING/R (2QP).
(f) Repair all the unserviceable wiring and connectors.
(6) Do the test given in Para 3.B.
(7) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
103VU .
(8) Do the test given in Para 3.B.
(9) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
103VU .
(10) Do the test given in Para 3.B.
(11) If the fault continues check/replace the RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP)
103VU .
(12) Do the test given in Para 3.B.
(13) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between:
· the pin B, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal B1, RELAY-L
WING TK LOW LEVEL CHANNEL A (5QP)
· the terminal B2, RELAY-L WING TK LOW LEVEL CHANNEL (5QP) and the terminal A1, RELAY-R
WING TK LOW LEVEL CHANNEL B (6QP)
· the terminal X2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) and the terminal A, RELAY-L
OR R REAR XFR VALVE OPEN LATCH (13QP)
· the terminal X2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the terminal B, RELAY-
L OR R REAR XFR VALVE OPEN LATCH (13QP)
· the terminal 1, RELAY-L OR R REAR OPEN LATCH (13QP) and the pin 5A, connector AA,
FLSCU-1 (7QJ)
· the terminal 3, RELAY-L OR R REAR OPEN LATCH (13QP) and the pin 5A, connector AA,
FLSCU-2 (9QJ)
· the pin 1A, connector AA, FLSCU-1 (7QJ) and the C/B-FUEL/XFR VALVE 1/WING/L (1QP)
· the pin 1A, connector AA, FLSCU-2 (9QJ) and the C/B-FUEL/XFR VALVE 1/WING/R (2QP).
(14) Repair all the unserviceable wiring and connectors.
(15) Do the test given in Para 3.B.

TASK 28-15-00-810-811-A
Intercell XFR Valves (Left And Right Forward) - Fail To Latch At Fuel Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
· aircraft wiring
· the suppression diode across terminals X and Z of the RELAY 14QP

Print Date: July 13, 2017 Page 26 of 68

· FQIC ( 3QT )
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-02
Ref. AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC)

3. Fault Confirmation
Subtask 28-15-00-710-060-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 , (9 and 10QP
ONLY).

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

(1) Connect a MULTIMETER - STANDARD to the RELAY-L OR R FWD XFR VALVE OPEN LATCH
(14QP) as follows:
· the multimeter negative/low input to terminal Z
· the multimeter positive/high input to terminal X.
(2) Disconnect the lead from terminal 3 of RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP).
(3) After approximately 5 seconds to allow the valves to move, check that:
(a) The L and R XFR Valves show open on the FUEL System SD Page.
(b) The multimeter reads 28VDC.
(4) Reconnect the lead disconnected in (2) above.
(5) Check that:
(a) The L and R XFR Valves remain at open on the FUEL System SD Page.
(b) The multimeter reads 28VDC.
(6) Open C/Bs (3QP), M22 and (4QP), M23 at 121VU
(7) Close C/Bs (3QP), M22 and (4QP), M23 at 121VU
(8) On the FUEL System SD Page check that the Left and Right Transfer Valves return to the closed
position.
4. Fault Isolation
Subtask 28-15-00-810-060-B
A. If:
(1) The multimeter reads 28VDC during the period that the valves are open.

Print Date: July 13, 2017 Page 27 of 68

(2) The valves close when the lead is reconnected to terminal 3 in Para 3.A.(4).
(3) Check/replace the RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP) .
(4) Do the test given in Para 3.A.
(5) If the multimeter does not read 28VDC in Para 3.A.(3)(b) above do a wiring check Ref. ASM 28-15-
02 of the:
· aircraft wiring between the terminal X, of the RELAY 14QP and the pin C, of the connector AA, at
ACTUATOR 9QP
· aircraft wiring between the terminal X, of the RELAY 14QP and the pin C, of the connector AA, at
ACTUATOR 10QP
· aircraft wiring between the terminal Z, of the RELAY 14QP and the pin 9E, connector AB, at FQIC
3QT
· the suppression diode across terminals X and Z of the RELAY 14QP .
(6) Repair/replace all the unserviceable wiring, diodes, and connectors.
(7) Do the test given in Para 3.A.
(8) If the fault continues replace the FQIC ( 3QT ) Ref. AMM 28-42-34-000-001 and Ref. AMM 28-42-
34-400-001 .
(9) Do the test given in Para 3.A.

TASK 28-15-00-810-812-A
Intercell Transfer Valves (Left And Right Rear) - Fail To Latch At Fuel Low Level

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP)
· aircraft wiring
· suppression diode across terminals X and Z of the RELAY 13QP
· FQIC ( 3QT )
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-01
Ref. AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC)

Print Date: July 13, 2017 Page 28 of 68

3. Fault Confirmation
Subtask 28-15-00-710-061-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 , (11 & 12QP
ONLY).

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

(1) Connect a MULTIMETER - STANDARD to the RELAY-L OR R REAR XFR VALVE OPEN LATCH
(13QP) as follows:
· the multimeter negative/low input to terminal Z
· the multimeter positive/high input to terminal X.
(2) Disconnect the lead from terminal 3 of RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP).
(3) After approximately 5 seconds to allow the valves to move, check that:
(a) The L and R XFR Valves show open on the FUEL System SD Page.
(b) The multimeter reads 28VDC.
(4) Reconnect the lead disconnected in (2) above.
(5) Check that:
(a) The L and R XFR Valves remain at open on the FUEL System SD Page.
(b) The multimeter reads 28VDC.
(6) Open C/Bs (1QP), A10 and (2QP), A11 at 121VU
(7) Close C/Bs (1QP), A10 and (2QP), A11 at 121VU
(8) On the FUEL System SD Page check that the Left and Right Transfer Valves return to the closed
position.
4. Fault Isolation
Subtask 28-15-00-810-061-B
A. If:
(1) The multimeter reads 28VDC during the period that the valves are open.
(2) The valves close when the lead is reconnected to terminal 3 in Para 3.A.(4).
(3) Check/replace the RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) .
(4) Do the test given in Para 3.A.
(5) If the multimeter does not read 28VDC in Para 3.A.(3)(b) above do a wiring check Ref. ASM 28-15-
01 of the:
· aircraft wiring between the terminal X, of the RELAY 13QP and the pin C, of the connector AA, at
ACTUATOR 11QP
· aircraft wiring between the terminal X, of the RELAY 13QP and the pin C, of the connector AA, at
ACTUATOR 12QP
· aircraft wiring between the terminal Z, of the RELAY 13QP and the pin 10B, connector AB, at FQIC
3QT
· suppression diode across terminals X and Z of the RELAY 13QP .
(6) Repair/replace all the unserviceable wiring, diodes, and connectors.
(7) Do the test given in Para 3.A.
(8) If the fault continues replace the FQIC ( 3QT ) Ref. AMM 28-42-34-000-001 and Ref. AMM 28-42-
34-400-001 .

Print Date: July 13, 2017 Page 29 of 68

(9) Do the test given in Para 3.A.

TASK 28-15-00-810-813-A
Intercell Transfer Valves (Left And Right Forward) - Fail To Close (Delatch)

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· FQIC ( 3QT )
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. ESPM 20-52-21
Ref. ESPM 20-52-22
Ref. ESPM 20-53-21
Ref. ASM 28-15-02
AIPC 28150802
Ref. AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-46-34-000-001 Removal of the Fuel-Level Sensing Control-Unit (FLSCU)
Ref. AWM 93-01-03

3. Fault Confirmation
Subtask 28-15-00-865-065-A
A. Table of the circuit breakers referred to in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-062-A
B. Test

Print Date: July 13, 2017 Page 30 of 68

(1) In the forward avionics compartment, get access to the relay-box 103VU Ref. AMM 28-46-34-000-
001 Ref. AWM 93-01-03 AIPC 28150802.
(2) Connect a MULTIMETER - STANDARD to the RELAY-L OR R FWD XFR VALVE OPEN LATCH
(14QP) as follows:
· the multimeter positive/high input to the relay terminal Z
· the multimeter negative/low input to a suitable aircraft ground.
(3) Do the power on BITE test (of the FQIC 3QT) and monitor:
· the XFR Valve movement on the ECAM, FUEL System Display (lower ECAM DU)
· the multimeter reading.
(a) If the aircraft is already supplied with electrical power, reset the FQIC 3QT (to start a new test) as
follows:
1 Open the C/Bs 1QT and 2QT.
2 Wait 5 seconds.
3 Close the C/Bs 1QT and 2QT.

NOTE: The full FQIS BITE test (with ICTV movement) is done a short time after power on.

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these cir-
cuits is supplied from the main power. The ICTVs will not operate if only battery
power is available.

(b) If during the power on BITE test the voltage reading on the multimeter:
· changes from 0VDC to 28VDC (after an initial warm up period) and from 28VDC to 0VDC
(when the transfer-valves have moved to the closed position), no troubleshooting work steps
are necessary

· stays at 0VDC or 28VDC, do Para. 4.A.

NOTE: In normal operation the forward ICTV delatch is set during a refuel. The FQIC 3QT open-
circuits the pin 9E at 3QT-AB which causes the forward ICTVs to close Ref. ASM 28-15-
02.

4. Fault Isolation
Subtask 28-15-00-810-062-A
A. Procedure
(1) Replace the FQIC ( 3QT ) Ref. AMM 28-42-34-000-001 and Ref. AMM 28-42-34-400-001 .
(a) Do the test given in Para. 3.B.
(2) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-L OR R FWD
XFR VALVE OPEN LATCH (14QP), terminal Z and the FQIC connector 3QT-AB, pin 9E.
(b) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-R WING TK
LOW LEVEL CHANNEL A (8QP), terminal X2 and the RELAY-L OR R FWD VALVE OPEN
LATCH (14QP), terminal B.
(c) Do a wiring check of the aircraft wiring Ref. ASM 28-15-02 between the RELAY-L WING TK
LOW LEVEL CHANNEL B (7QP), terminal X2 and the RELAY-L OR R FWD VALVE OPEN
LATCH (14QP), terminal A.

NOTE: A wiring check means that you test the wire(s) specified as follows:

Print Date: July 13, 2017 Page 31 of 68

- for contiuity Ref. ESPM 20-52-21

- for a short circuit to ground Ref. ESPM 20-52-22
- for a short circuit to adjacent wires Ref. ESPM 20-52-22.
These checks are necessary to find a possible short-circuit to ground in the latch hold-on
(ground) wire. A short-circuit (as described) can cause the latch to stay on.

(d) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(e) Do the test given in Para. 3.B.

TASK 28-15-00-810-814-A
Intercell Transfer Valves (Left And Right Rear) - Fail To Close (Delatch)

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· FQIC ( 3QT )
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. ESPM 20-52-21
Ref. ESPM 20-52-22
Ref. ESPM 20-53-21
Ref. ASM 28-15-01
AIPC 28150802
Ref. AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC)
Ref. AMM 28-46-34-000-001 Removal of the Fuel-Level Sensing Control-Unit (FLSCU)
Ref. AWM 93-01-03

3. Fault Confirmation
Subtask 28-15-00-865-066-A
A. Table of the circuit breakers referred to in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

Print Date: July 13, 2017 Page 32 of 68

PANEL DESIGNATION FIN LOCATION

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-063-A
B. Test
(1) In the forward avionics compartment, get access to the relay-box 103VU Ref. AMM 28-46-34-000-
001 Ref. AWM 93-01-03 AIPC 28150802.
(2) Connect a MULTIMETER - STANDARD to the RELAY-L OR R REAR XFR VALVE OPEN LATCH
(13QP) as follows:
· the multimeter positive/high input to the relay terminal Z
· the multimeter negative/low input to a suitable aircraft ground.
(3) Do the power on BITE test (of the FQIC 3QT) and monitor:
· the XFR Valve movement on the ECAM, FUEL System Display (lower ECAM DU)
· the multimeter reading.
(a) If the aircraft is already supplied with electrical power, reset the FQIC 3QT (to start a new test) as
follows:
1 Open the C/Bs 1QT and 2QT.
2 Wait 5 seconds.
3 Close the C/Bs 1QT and 2QT.

NOTE: The full FQIS BITE test (with ICTV movement) is done a short time after power on.

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these cir-
cuits is supplied from the main power. The ICTVs will not operate if only battery
power is available.

· stays at 0VDC or 28VDC, do Para. 4.A.

NOTE: In normal operation the rear ICTV delatch is set during a refuel. The FQIC 3QT open-cir-
cuits the pin 10B at 3QT-AB which causes the rear ICTVs to close Ref. ASM 28-15-01.

4. Fault Isolation
Subtask 28-15-00-810-063-A
A. Procedure
(1) Replace the FQIC ( 3QT ) Ref. AMM 28-42-34-000-001 and Ref. AMM 28-42-34-400-001 .
(a) Do the test given in Para. 3.B.
(2) If the fault continues:
(a) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between the RELAY-L OR R REAR
XFR VALVE OPEN LATCH (13QP), terminal Z and the FQIC connector 3QT-AB, pin 10B.

Print Date: July 13, 2017 Page 33 of 68

(b) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between the RELAY-L WING TK
LOW LEVEL CHANNEL A (5QP), terminal X2 and the RELAY-L OR R REAR XFR VALVE OPEN
LATCH (13QP), terminal A.
(c) Do a wiring check of the aircraft wiring Ref. ASM 28-15-01 between the RELAY-R WING TK
LOW LEVEL CHANNEL B (6QP), terminal X2 and the RELAY-L OR R REAR XFR VALVE OPEN
LATCH (13QP), terminal B.

NOTE: A wiring check means that you test the wire(s) specified as follows:
- for contiuity Ref. ESPM 20-52-21
- for a short circuit to ground Ref. ESPM 20-52-22
- for a short circuit to adjacent wires Ref. ESPM 20-52-22.
These checks are necessary to find a possible short-circuit to ground in the latch hold-on
(ground) wire. A short-circuit (as described) can cause the latch to stay on.

(d) Repair all the unserviceable wiring and connectors Ref. ESPM 20-53-21.
(e) Do the test given in Para. 3.B.

TASK 28-15-00-810-815-A
Unwanted Fuel Transfer (Migration) Between The Outer and Inner Cells of The Same Wing When The ECAM
FUEL System Page ICTV Indications Show Correct

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· VALVE-AIR INLET ( 161QM )
· VALVE-AIR INLET ( 162QM )
· VALVE-AIR RELEASE, L WING TK ( 86QM )
· VALVE-AIR RELEASE, R WING TK ( 87QM )
· Intercell Transfer Valve (ICTV) Installation at Rib 15
· O-rings
· Recirculation Cooling System Fuel Return Pipe Installation at Rib 15
· Refuel Spill Pipe Installation at Rib 15
· Refuel Gallery Installation at Rib 15
· Center-Tank Vent (Pipe) Installation at Rib 15 (Left Wing Only)
· PROTECTOR-OVERPRESSURE, L WING TK ( 102QM )
· PROTECTOR-OVERPRESSURE, R WING TK ( 103QM )
· VALVE-FLOAT VENT, L WING TK OUTR ( 15QM )
· VALVE-FLOAT VENT, R WING TK OUTR ( 18QM )
· VALVE-FLOAT VENT, L WING TK INR ( 16QM )
· VALVE-FLOAT VENT, R WING TK INR ( 17QM )
· connector 4046VC1(2), part of harness 16QT1(2)
· connector 4045VC1(2), part of harness 15QT1(2)
· Wing-Tank Vent Duct at Rib 15
· Hydraulic Pipe 0.375 OD Blue System Pressure Installation at Rib 15
· Hydraulic Pipe 0.5 OD Blue System Return Installation at Rib 15
· Wing-Tank Scavenge System Jet-Pumps Supply Feed-line Installation at Rib 15
· Valve-Air Inlet 161QM(162QM) Through-pipe Installation at Rib 15

Print Date: July 13, 2017 Page 34 of 68

· RIB-15 Interfaces (Joints)

· fuel tank sealant
2 Job Set-up Information
A. Referenced Information

REFERENCE DESIGNATION
(Ref. 28-12-00-810-801-A). Fuel - Unwanted Transfer From The Left Wing Tank To The Center
Tank At Any Time
(Ref. 28-12-00-810-804-A). Fuel - Tank Venting, L(R) Wing Tank (Outer Cell) Overpressure Pro-
tector 102QM(103QM) Broken
(Ref. 28-15-00-810-803-A). Intercell XFR VALVE 27QM/70QM/9QP (Left Forward) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-804-A). Intercell XFR Valve 28QM/71QM/11QP (Left Rear) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-805-A). Intercell XFR Valve 29QM/72QM/10QP (Right Forward) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-806-A). Intercell XFR Valve 30QM/73QM/12QP (Right Rear) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-807-A). Intercell XFR Valve Failure (Left Forward) - Open When Fuel Not Low
Level
(Ref. 28-15-00-810-808-A). Intercell XFR Valve Failure (Left Rear) - Open When Fuel Not Low
Level
(Ref. 28-15-00-810-809-A). Intercell XFR Valve Failure (Right Forward) - Open When Fuel Not
Low Level
(Ref. 28-15-00-810-810-A). Intercell XFR Valve Failure (Right Rear) - Open When Fuel Not Low
Level
(Ref. 28-21-00-810-825-A). Internal Fuel Leak Which Causes a Fuel Imbalance or a Discharge
From a NACA Vent During Taxi or Flight
(Ref. 28-25-00-810-810-A). Refuel Gallery - Uncommanded Fuel Transfer From One Wing To The
Other Wing
AIPC 27140525
Ref. AMM 28-11-00-790-001 Leak Test with Fuel of the Wing-Tank Outer-Cell
Ref. AMM 28-12-00-200-001 Inspection of the Tank Venting System
Ref. AMM 28-12-43-000-001 Removal of the Vent Float-Valve
Ref. AMM 28-12-43-000-002 Removal of the Vent Float-Valve
Ref. AMM 28-12-43-400-001 Installation of the Vent Float-Valve
Ref. AMM 28-12-43-400-002 Installation of the Vent Float-Valve
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer Valves
Ref. ASM 28-15-01
Ref. ASM 28-15-02
Ref. AMM 28-15-41-000-001 Removal of the Transfer Valve
Ref. AMM 28-15-41-400-001 Installation of the Transfer Valve
AIPC 28210539
Ref. AMM 28-25-42-000-001 Removal of the Refuel Diffuser Assembly - Wing Tanks
Ref. AMM 28-25-42-400-001 Installation of the Refuel Diffuser Assembly - Wing Tanks
Ref. AMM 28-25-47-000-001 Removal of the Spill-Pipe Check-Valve
Ref. AMM 28-42-43-000-003 Removal of the Wing-Tank Outer-Cell Group A Harness
Ref. AMM 28-42-43-000-004 Removal of the Wing-Tank Outer-Cell Group B Harness
Ref. AMM 28-42-43-000-006 Removal of the Wing-Tank Inner-Cell Group A Harness

Print Date: July 13, 2017 Page 35 of 68

REFERENCE DESIGNATION
Ref. AMM 28-42-43-000-007 Removal of the Wing-Tank Inner-Cell Group B Harness
Ref. AMM 28-42-43-400-003 Installation of the Wing Tank Outer-Cell Group A Harness
Ref. AMM 28-42-43-400-004 Installation of the Wing-Tank Outer-Cell Group B Harness
Ref. AMM 28-46-00-740-001 Functional (BITE) Test
AIPC 29120522
Ref. AMM 51-76-12-300-001 Local Repair of the Fuel Tank Sealant
Ref. SRM 572134

3. Fault Confirmation
Subtask 28-15-00-865-064-A
A. Table of the circuit breakers referred to in this procedure:

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13
49VU FUEL/XFR VALVE1/WING/R 2QP A11
49VU FUEL/XFR VALVE1/WING/L 1QP A10

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHAN/2 2QT M27
121VU FUEL/XFR VALVE2/WING/R 4QP M23
121VU FUEL/XFR VALVE2/WING/L 3QP M22

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-084-A
B. Test (Prerequisite 1)
(1) Do the FLSS BITE test Ref. AMM 28-46-00-740-001 .
(a) Examine the FLSS STATUS page.
Look for one (or more) of the messages that follow:
· L LO LEVEL SENSOR 15QJ1
· L LO LEVEL SENSOR 15QJ2
· R LO LEVEL SENSOR 16QJ1
· R LO LEVEL SENSOR 16QJ2
· FLSCU1 7QJ
· FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
· is not shown, do step (2).

· is shown, trouble shoot the LRU(s) before you do step (2). Refer to the Fault Symptoms, at the
front of the TSM and/or chapter 28, for the related Task number.
(2) Do the Functional (BITE) Test of the Intercell Transfer Valves Ref. AMM 28-15-00-740-002 .

NOTE: This test lets you check the control system of the Intercell Transfer Valve (ICTV) actuators.

NOTE: The COMMAND FLSS BITE option does not test the ICTVs.

NOTE: The ICTVs are motor driven and the electrical power for these circuits is supplied as follows:
- Rear Spar, System 1 - 801PP,28VDC, ESS BUS/SHEDDABLE Ref. ASM 28-15-02
- Front Spar, System 2 - 206PP,28VDC, BUS 2 Ref. ASM 28-15-01.

Print Date: July 13, 2017 Page 36 of 68

The ICTVs will not operate on battery power.

(a) Examine the FLSS STATUS page.

Look for one of the intercell transfer valve messages that follow:
· XFR VALVE 27QM/70QM/9QP (left wing forward intercell)
· XFR VALVE 28QM/71QM/11QP (left wing rear intercell)
· XFR VALVE 29QM/72QM/10QP (right wing forward intercell)
· XFR VALVE 30QM/73QM/12QP (right wing rear intercell).
(b) If a message:
· is not shown, do Para. 3.C.

· is shown, trouble shoot the LRU(s) before you do Para. 3.C. Refer to the Fault Symptoms List/
28-CFDS for the related Task number.
Subtask 28-15-00-710-085-A
C. Test (Prerequisite 2)
(1) Do the Operational Check of Individual Transfer Valves to Ensure Valve Shaft Rotates Valve to Open
Position Ref. AMM 28-15-00-710-002 .

NOTE: Changes in the related inner and outer cell FQIs, on the ECAM fuel system display page, let
you see if there is fuel movement or transfer. This lets you check the position of a intercell
transfer valve during the test. Examples:
- if the outer-cell fuel content decreases and the inner-cell increases, the valve is open
- if there is no fuel movement, the valve is closed
- if the fuel movement stops, or there is a large decrease, the valve has moved to the closed
position.

(a) If the fuel flow:

· changes as specified, do the test in Para. 3.D.

· does not change when C/B-3QP is opened and closed, do the TSM procedures (Ref. TSM 28-
15-00-810-809) (Ref. TSM 28-15-00-810-805) and then Para. 3.D.

· does not change when C/B-4QP is opened and closed, do the TSM procedures (Ref. TSM 28-
15-00-810-807) (Ref. TSM 28-15-00-810-803) and then Para. 3.D.

· does not change when C/B-2QP is opened and closed, do the TSM procedures (Ref. TSM 28-
15-00-810-808) (Ref. TSM 28-15-00-810-804) and then Para. 3.D.

· does not change when C/B-1QP is opened and closed, do the TSM procedures (Ref. TSM 28-
15-00-810-810) (Ref. TSM 28-15-00-810-806) and then Para. 3.D.
Subtask 28-15-00-710-064-E
D. Test
(1) Read all of this paragraph before you continue or do the applicable work steps.

NOTE: When the wing-tank fuel pumps are in operation, there is a continuous flow of fuel (approxim-
ately 450 kg (1000 lb) per hour) to the scavenage jet pumps in the outer-cells. This is more
than sufficient to keep the outer-cells full. When an outer-cell is full, the (more than necessary)
fuel returns to the inner-cell through the spill pipe.

(2) Set, or make sure that, the aircraft fuel load on the related side is as follows Ref. AMM 28-11-00-790-
001 :

Print Date: July 13, 2017 Page 37 of 68

· Outercell - Full
· Innercell - Not more than a maximum of 3000 kg (6620 lb)
· Center Tank - Not Applicable.

NOTE: The calculated outer-cell fuel quantities (given in Para. 4.A.) are only applicable if the surface
level of the fuel in the inner-cell is lower than the bottom of Rib 15 at the end of the test. That
is correct if the inner-cell fuel load is set as specified or less. The reference given is for if you
want to defuel the inner-cell to empty.

(3) On the ECAM FUEL System Display page, monitor the Fuel On Board (FOB) and each of the tank
(cell) FQIs. Make a record of the applicable outer-cell final FQI value. The final outer-cell FQI value
can give an indication of the fuel leak location for use in Para. 4.A.

NOTE: The smallest movement (resolution) of the ECAM FQI digital display is 10 kg (20 lb). It is pos-
sible for the FQI displays to change, move up or down 10 kg (20 lb) when the aircraft is in a
level attitude (with no movement).

· if all the FQIs remain the same and stable, for an acceptable period, no work steps are necessary

NOTE: Acceptable period definitions are given at the end of this test.

· if there is a decrease of the outer-cell FQI equal to an increase of the related inner-cell FQI, do
Para. 4.A.

· if the unserviceable wing shows a decrease of the outer-cell FQI (equal to the sum of an increase
of the inner-cell FQIs in the same wing and the other wing) do Refuel Gallery - Uncommanded Fuel
Transfer From One Wing To The Other Wing (Ref. TSM 28-25-00-810-810)

NOTE: This TSM procedure tries to identify if there is a defective VALVE-AIR INLET ( 161QM ) (
VALVE-AIR INLET ( 162QM ) ) that stays in the open positon. This lets the related outer-cell
fuel move into the refuel gallery. Gravity, and the attitude of the aircraft can cause this fuel to
flow (to the down side) through the drain valve 31QM (32QM) into the left and/or right wing in-
ner-cell.

· if the unserviceable wing shows a decrease of the outer-cell FQI and the FOB decreases an equal
FQI, do the Leak Test with Fuel of the Wing-Tank Outer-Cell Ref. AMM 28-11-00-790-001

NOTE: This shows an external fuel leak.

· if there is an unwanted transfer from the left wing tank to the center tank, do (Ref. TSM 28-12-00-
810-801)

NOTE: An unwanted quantity of fuel has possibly collected in the left vent surge tank because its re-
turn system has failed. When the surface level of this fuel is above the center-tank vent-pipe
outlet, gravity causes it to flow into the center tank.

· if there is an unwanted internal leak (transfer) which causes a fuel imbalance or discharge from a
NACA vent during taxi or flight, do (Ref. TSM 28-21-00-810-825) .

NOTE: This TSM procedure is about a possible defective VALVE-AIR RELEASE, L WING
TK ( 86QM ) ( VALVE-AIR RELEASE, R WING TK ( 87QM ) ).

Acceptable Period Definitions

Acceptable Period 1
Changes in FQIs will let you see if there is a leak or transfer.

Print Date: July 13, 2017 Page 38 of 68

If the original (unwanted) transfer is 10 kg(20 lb)/minute) you will need to monitor the outer and inner-
cell FQIs for ten minutes. The slower the leakage rate the longer the monitor time necessary to make
sure that you can see (detect) its effect.
Acceptable Period 2 (For a small leakage rate)
If it is operationally possible, let the aircraft stay in a level attitude overnight and then do (repeat) step
(2) the next morning (or alternatively after eight hours).
Acceptable Period 3 (For a large leakage rate)
When the decrease in the outer-cell FQI stops.
4. Fault Isolation
Subtask 28-15-00-810-064-F
A. Procedure.
(1) Troubleshooting Options.
(a) Do the work steps (2) thru (17) in the sequence given.

NOTE: The sequence of the steps is the height above the fuel-tank (cell) floor. It starts with the
lowest items, the ICTVs and goes up to the wing top skin. The last step is the Rib 15 wing
interface.

(b) Do the work steps (2) thru (17) in a sequence of your choice.
(c) Find the FQI of the outer-cell you recorded (as the result) at Para. 3.D.(3) in the table that
follows. Then do the related step given.
Examples
If the aircraft has stayed in a level attitude (since the test in Para. 3.D) the fuel (remaining) in the
outer-cell can be used as an initial guide to a possible LRU failure (or leak location) as given in
the examples that follow:
· if the outer-cell fuel quantity decreases to approximately zero, possibly one or two ICTVs have
failed in the open position, do step (2)

· if the outer-cell fuel quantity decreases to approximately 71 kg (157 lb), possibly the protector-
overpressure (burst disc) has operated, do step (7)

· if the outer-cell fuel quantity decreases to approximately 134 kg (295 lb), possibly the valve-
float vent has failed in the open position, do step (8).

NOTE: The calculated (theoretical) outer-cell fuel quantities given are only applicable (correct) if
the surface level of the fuel in the inner-cell is lower than the bottom of Rib 15 at the end
of the test.

OUTER-CELL FQI kg(lb) RIB-15 INSTALLATION/LRU STEP

0 ICTVs (2)
Recirculation Return Pipe (3)
Spill Pipe (4)
Refuel Gallery (5)
CTR/Tank Vent (L/Wing Only) (6)
71 (157) Protector-Overpressure (7)
134 (295) Vent (Rib 15, STR 9 to 10) (8)
134 (295) Vent (Rib 15, STR 10 to 11) (9)
Connector 4046VC1(2) (10)
Connector 4045VC1(2) (11)
Wing-Tank Vent Duct (12)

Print Date: July 13, 2017 Page 39 of 68

OUTER-CELL FQI kg(lb) RIB-15 INSTALLATION/LRU STEP

between (STR13 to 14)
Hyd Pipe 0.375 OD Blue System (13)
Pressure (between STR15 to 16)
Hyd Pipe 0.5 OD Blue System (14)
Return (between STR14 to 15)
Scavenge Jet Pumps Supply Pipe (15)
120 (265) Air Inlet Valve 161QM(162QM) (16)
O to 750 (1653) RIB-15 Interfaces (Joints) (17)

NOTE: In the work step titles that follow an AIRBUS (Single Aisle Aircraft) drawing (DWG) refer-
ence is given. These can supply more specific data, if required. You can get them from
Airbus OnLine Services (AOLS).

(2) The Intercell Transfer Valve (ICTV) Installation at Rib 15 (Ref. DWG D28250002)
(a) Get access to each (of the two) related ICTV installations on each side of the Rib 15 Ref.
AMM 28-15-41-000-001 .
(b) Physically examine the two related ICTV installations.
1 Make sure that the O-rings (between each ICTV valve and the Rib 15) are installed
correctly. If necessary, remove each valve to check Ref. AMM 28-15-41-000-001 Ref.
AMM 28-15-41-400-001 .
2 Make sure that the sealant for each of the ICTV four attachment bolts was applied correctly
and is in good condition. If necessary, re-apply the sealant.
(c) Do the test given in Para. 3.D.
(3) The Recirculation Cooling System Fuel Return Pipe Installation at Rib 15 (Ref. DWG D28250004)
(a) Physically examine the fuel-pipe connector installations on each side of the Rib 15.
1 Make sure that the O-rings (between each connector and the Rib 15) are installed correctly.
If necessary, remove the connectors to check the installation is serviceable.
2 Make sure that the sealant for each of the four attachment bolts was applied correctly and is
in good condition. If necessary, re-apply the sealant.
(b) Do the test given in Para. 3.D.
(4) The Refuel Spill Pipe Installation at Rib 15 (Ref. DWG D28250006)
(a) Physically examine the spill-pipe connector installation on each side of the Rib 15 Ref. AMM 28-
25-47-000-001 .
1 Make sure that the O-ring (between the connector and the out board side of the Rib 15) is
installed correctly. If necessary, remove the connector to examine.
2 Make sure that the sealant for each of the five attachment bolts was applied correctly and is
in good condition. If necessary, re-apply the sealant.
(b) Do the test given in Para. 3.D.
(5) The Refuel Gallery Installation at Rib 15 (Ref. DWG D28250003)
(a) Physically examine the refuel gallery connector installation on each side of the Rib 15 Ref.
AMM 28-25-42-000-001 .
1 Make sure that the O-ring (between the connector and the out board side of the Rib 15) is
installed correctly.

Print Date: July 13, 2017 Page 40 of 68

2 If necessary, remove the connector to examine and replace Ref. AMM 28-25-42-000-001
and Ref. AMM 28-25-42-400-001 .
3 Make sure that the sealant for each of the four attachment bolts was applied correctly and is
in good condition. If necessary, re-apply the sealant.
(b) Do the test given in Para. 3.D.
(6) The Center-Tank Vent (Pipe) Installation at Rib 15 (Left Wing Only) (Ref. DWG D28150109)
(a) Physically examine the center-tank vent connector installation on each side of the Rib 15.
1 Make sure that the O-ring (between the connector and the out board side of the Rib 15) is
installed correctly.
2 If necessary, remove the connector to examine and replace.
3 Make sure that the sealant for each of the four attachment bolts was applied correctly and is
in good condition. If necessary, re-apply the sealant.
(b) Do the test given in Para. 3.D.
(7) The Protector-Overpressure (Ref. DWG D28150006)
(a) Do a check of the PROTECTOR-OVERPRESSURE, L WING TK ( 102QM ) ( PROTECTOR-
OVERPRESSURE, R WING TK ( 103QM ) ) (Ref. TSM 28-12-00-810-804) .
(b) Do the test given in Para. 3.D.
(8) The Outer-cell Vent System outboard of STA8262/Rib 15 (between STR 9 & 10) Outer-cell (Ref.
DWG D28150101)
(a) Do a visual inspection Ref. AMM 28-12-00-200-001 of the VALVE-FLOAT VENT, L WING
TK OUTR ( 15QM ) ( VALVE-FLOAT VENT, R WING TK OUTR ( 18QM ) ) and replace, if
necessary, Ref. AMM 28-12-43-000-001 and Ref. AMM 28-12-43-400-001 .
1 Make sure that the items that follow are serviceable and installed correctly:
· O-ring
· sealant.
2 Make sure that the vent float valves 15QM (18QM) condition is as given in Ref. AMM 28-12-
00-200-001 .
3 Repair/replace all the unserviceable items.
(b) Do the test given in Para. 3.D.
(9) The Inner-cell Vent System inboard of STA8262/Rib 15 (between STR 10 & 11) Inner-cell (Ref. DWG
D28150101)
(a) Do a visual inspection Ref. AMM 28-12-00-200-001 of the VALVE-FLOAT VENT, L WING TK
INR ( 16QM ) ( VALVE-FLOAT VENT, R WING TK INR ( 17QM ) ) and replace, if necessary,
Ref. AMM 28-12-43-000-002 and Ref. AMM 28-12-43-400-002 .
1 Make sure that the items that follow are serviceable and installed correctly:
· O-ring
· sealant.
2 Make sure that the vent float valves 16QM (17QM) condition is as given in Ref. AMM 28-12-
00-200-001 .
3 Repair/replace all the unserviceable items.
(b) Do a visual inspection of the adaptor assembly between the applicable vent float valve and the
Rib 15. Replace, if necessay.
1 Make sure that the items that follow are serviceable and installed correctly:
· O-ring

Print Date: July 13, 2017 Page 41 of 68

· sealant.
(c) Do the test given in Para. 3.D.
(10) The connector 4046VC1(2), part of harness 16QT1(2) (Ref. DWG D28450007)
(a) Get access to the connector 4046VC1(2) Ref. AMM 28-42-43-000-007 and Ref. AMM 28-42-43-
000-004 .
(b) Do a visual inspection of the:
· connector 4046VC1(2)
· related installation items and sealant.
(c) Replace, if necessary, the outer-cell harness 16QT 1(2) Ref. AMM 28-42-43-000-004 and Ref.
AMM 28-42-43-400-004 .
(d) Do the test given in Para. 3.D.
(11) The connector 4045VC1(2), part of harness 15QT1(2) (Ref. DWG D28450007)
(a) Get access to the connector connector 4045VC1(2) Ref. AMM 28-42-43-000-006 and Ref.
AMM 28-42-43-000-003 .
(b) Do a visual inspection of the:
· connector 4045VC1(2)
· related installation items and sealant.
(c) Replace, if necessary, the outer-cell harness 15QT 1(2) Ref. AMM 28-42-43-000-003 and Ref.
AMM 28-42-43-400-003 .
(d) Do the test given in Para. 3.D.
(12) The Wing-Tank Vent Duct at Rib 15 (Ref. DWG D28150109) and (Ref. DWG D28150101).
(a) Examine the wing-tank (stringer) vent-duct, as given in the procedure Inspection of the Tank
Venting System Ref. AMM 28-12-00-200-001 , in the areas that follow:
1 Where it goes through the Rib 15 (look from the inboard and outboard sides).
2 All of its length between the Ribs 15 and 22.
3 The vent pipe from the Rib 15, that connects the applicable vent float valve 16QM (17QM),
to the vent-duct between the Ribs 17 and 18.
· if damage is found, contact AIRBUS.
(13) The Hydraulic Pipe 0.375 OD Blue System Pressure Installation at Rib 15 (between STR 15 & 16)
(Ref. DWG D93450030) (Ref. DWG D29150006) and AIPC 27140525
(a) Examine the through connector installation and replace, if necessary.
1 Make sure that the sealant was applied correctly and is in good condition. If necessary, re-
apply the sealant.
(b) Do the test given in Para. 3.D.
(14) The Hydraulic Pipe 0.5 OD Blue System Return Installation at Rib 15 (between STR 14 & 15) (Ref.
DWG D93450030) (Ref. DWG D29150005) and AIPC 29120522
(a) Examine the through connector installation and replace, if necessary.
1 Make sure that the sealant was applied correctly and is in good condition. If necessary, re-
apply the sealant.
(b) Do the test given in Para. 3.D.
(15) The Wing-Tank Scavenge System Jet-Pumps Supply Feed-line Installation at Rib 15 (Ref. DWG
D28250007)
(a) Examine the right-angle (elbow) connector AIPC 28210539 and replace, if necessary.

Print Date: July 13, 2017 Page 42 of 68

(b) Do the test given in Para. 3.D.

(16) The Valve-Air Inlet 161QM(162QM) Through-pipe Installation at Rib 15 (Ref. DWG D28250003) and
(Ref. DWG D28250241)
(a) Do the TSM procedure (Ref. TSM 28-25-00-810-810) .
(b) If the fault continues, examine the Rib-15 at the vent pipe through-point.
(c) Replace or remake the through connection as necessary.
(d) Do the test given in Para. 3.D.
(17) The RIB-15 Interfaces (Joints) (Ref. DWG D57252315)
(a) Do leak test of the outer-cell Ref. AMM 28-11-00-790-001 .
1 If necessary, examine the Rib 15 joints to the structures that follow for damage (that could
possibly cause a leak):
· upper wing-skin
· lower wing-skin
· front spar
· rear spar.
· if the Rib 15 is found to be damaged, go to Ref. SRM 572134

· if necessary, do a local repair of the fuel tank sealant Ref. AMM 51-76-12-300-001 .
(b) Do the test given in Para. 3.D.

TASK 28-15-00-810-816-A
Spurious Valve Movements

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) - 103VU126
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) - 103VU126
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) - 103VU126
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) - 103VU126
· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) - 103VU126
· RELAY-R OR R FWD XFR VALVE OPEN LATCH (14QP) - 103VU126
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR POWER SUPPLY UNIT 150A/CONTINUOUSLY - DC, VARIABLE

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-710-065-C
A. Due to the spurious nature of this failure it is not possible to do a Fault Confirmation in the normal sense.

Print Date: July 13, 2017 Page 43 of 68

(1) To open and close ICTVs, and check the system operation:
(a) On the ECAM CONTROL PANEL:
· push (in) the FUEL system page P/BSW.
(b) Make sure the FUEL system page is shown.
(c) Read Steps (d), (e), and (f) before starting same.
(d) Do the Power Up Functional (BITE) Test of the FLSS Ref. AMM 28-46-00-740-001 .
OR (if the FQIC is already powered).
Reset the FQIC. (Open, then after 5 seconds, close the two C/Bs 1QT and 2QT).
Reset the C/B 8QT.

NOTE: The ICTVs are not tested by the CFDS(FUEL) - COMMAND FLSS BITE menu option.

NOTE: The left and right wing inner cells must contain more than 1500kg(3300lb) of fuel for the
ICTVs to be tested. Refuel inner cells to greater than this level if necessary.

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is
derived from the main power. The ICTVs are immobilized on battery power.

(e) Observe the ECAM lower display (SD page) while the FQIC/FLSS BITE Test is in progress.
(f) Make sure the intercell transfer valve symbol for each wing is seen to open and then close during
the BITE Test.
(2) If this is:
(a) the first in flight occurence of this failure:
· maintenance steps are not necessary.
(b) the second or more in flight occurence of this failure:
· do Para. 4.A.
4. Fault Isolation
Subtask 28-15-00-810-065-C
A. Remove the relays 5QP, 6QP, 7QP, and 8QP, one at a time and carry out the procedure that follows:
(1) If this is:
(a) The first Trouble-shooting attempt:
· do investigative Trouble-shooting starting with Step (2).
(b) The subsequent Trouble-shooting attempt:
· do Trouble-shooting by substitution, Step (19).
(2) Remove the relay from its location (socket).
(3) Carefully examine the relay for visible damage or blackened pins.
(4) If the relay is damaged or marked replace the relay.
(5) At an electrical test facility using a POWER SUPPLY UNIT 150A/CONTINUOUSLY - DC, VARIABLE:
(a) Set PSU to 28VDC.
(b) Connect positive supply to pin X1 (marked with colored bead).
(c) Connect negative supply to pin X2.
(d) Reduce the PSU voltage to zero (0 VDC).
(e) Gradually increase the voltage until the relay contacts close (indicated by a clicking sound).
(f) Make sure the contacts close before the voltage reaches 19.8VDC.

Print Date: July 13, 2017 Page 44 of 68

(g) Gradually reduce the voltage to zero (0 VDC).

(h) Make sure the contacts open before the coil voltage reaches 2VDC.
(i) Switch off the PSU.
(j) Disconnect the relay coil from the PSU.
(k) With a multimeter measure the resistance of the relay coil, between pins X1 and X2.
(l) Make sure the resistance of the coil is between 288 and 352 ohms.
(m) Measure the contact resistance of the two sets of contacts with the relay:
· energized, between pins A2 to A1, and B2 to B1, using PSU connected as in Steps (5)(a) and
(5)(b).
· not energized, between pins A2 to A3, and B2 to B3.
(n) Make sure the contact resistance is less than 0.1 ohms.
(6) Replace the relay if any measurements taken/made in Para. 4.A.(5) are outside the specification
given.
(7) If a relay is replaced in Para. 4.A.(6), replace the related latch relay as shown in the table that follows:

RELAY REPLACED LATCH RELAY TO BE REPLACED

5QP 13QP
6QP 13QP
7QP 14QP
8QP 14QP

NOTE: The action called for in Para. 4.A.(7) is necessary to make sure there is no residual contact
damage.

(8) Do the test given in Para. 3.A.

(9) If no fault was found with relays 5QP, 6QP, 7QP, or 8QP, remove relays 13QP, and 14QP, one at a
time and continue.
(10) Remove the relay from its location (socket).
(11) Carefully examine the relay for visible damage or blackened pins.
(12) If the relay is damaged or marked replace the relay.
(13) Measure the contact resistance of the two sets of contacts with the relay not energized.

NOTE: The energized contacts are not used.

(14) Make sure the contact resistance is less than 0.1 ohms.
(15) Replace the relay if any measurements taken/made are outside the specification given.
(16) Do the test given in Para. 3.A.
(17) Refit the relay in its location (socket) if it passes all sections of the specification given.
(18) Do the test given in Para. 3.A.
(19) If no specific relay failure can be found or the fault returns on subsequent flight(s), replace all these
relays as follows:
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) - 103VU126
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) - 103VU126
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) - 103VU126

Print Date: July 13, 2017 Page 45 of 68

· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) - 103VU126

· RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) - 103VU126
· RELAY-R OR R FWD XFR VALVE OPEN LATCH (14QP) - 103VU126 .
(20) Do the test given in Para. 3.A.

TASK 28-15-00-810-817-A
Intercell XFR System - Both Valves Show in Transit, CFDS (FUEL) Reports All Valves

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· Left Wing Forward Intercell XFR VALVE 27QM/70QM/9QP failure
· Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP failure
· Right Wing Forward Intercell XFR VALVE 29QM/72QM/10QP failure
· Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP failure
2 Job Set-up Information
A. Referenced Information

REFERENCE DESIGNATION
(Ref. 28-15-00-810-818-A). Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Re-
ports L/FWD Valve
(Ref. 28-15-00-810-819-A). Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Re-
ports L/REAR Valve
(Ref. 28-15-00-810-820-A). Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL)
Reports R/FWD Valve
(Ref. 28-15-00-810-821-A). Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL)
Reports R/REAR Valve
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

3. Fault Confirmation
Subtask 28-15-00-710-066-A
A. Do the FLSS BITE test Ref. AMM 28-46-00-740-001 .

NOTE: If the aircraft is already supplied with electrical power, reset the FQIC. (Pull, then push C/Bs M27
on 121VU and A13 on 49VU). The FLSS BITE test is carried out once a short time after power up.
After a two minute delay to allow the FQIC to do the BITE test, continue.

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-066-A
A. Read:
· the FQIS STATUS Page, CFDS (FUEL) - 06 FQIC Software Standard
· the FLSS STATUS Page, CFDS (FUEL) - 07 FQIC Software Standard.
(1) Refer to the related procedure as follows:
· (Ref. TSM 28-15-00-810-818) for the Left Wing Forward Intercell XFR VALVE 27QM/70QM/9QP
failure message

Print Date: July 13, 2017 Page 46 of 68

· (Ref. TSM 28-15-00-810-819) for the Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP
failure message
· (Ref. TSM 28-15-00-810-820) for the Right Wing Forward Intercell XFR VALVE 29QM/72QM/
10QP failure message
· (Ref. TSM 28-15-00-810-821) for the Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP
failure message.

TASK 28-15-00-810-818-A
Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Reports L/FWD Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L FWD SPAR ( 9QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-02
Ref. AMM 28-15-51-000-001 Removal of the Actuator
Ref. AMM 28-15-51-400-001 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-067-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-067-A
A. If the Left Intercell Transfer Valve continues to be shown in transit on the FUEL System Display, and the
CFDS(FUEL) reports the Left Forward Valve, disconnect the electrical connector from the ACTUATOR-
TRANSFER VALVE, L FWD SPAR (9QP).

Print Date: July 13, 2017 Page 47 of 68

NOTE: During normal Actuator-Transfer Valve, Left Forward Spar (9QP) operation, 28VDC is supplied to
the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Check with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-
02 to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 2/WING/R (4QP), M23 at 121VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-02 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 2/WING/R (4QP), M23 at 121VU.
(5) If the voltages at pins A and B of the connector are correct, (as in (1) and (3) above), check/replace
the ACTUATOR-TRANSFER VALVE, L FWD SPAR ( 9QP ) , Ref. AMM 28-15-51-000-001 , and
Ref. AMM 28-15-51-400-001 .
(a) While the actuator is removed from the aircraft confirm that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(6) If no 28VDC is measured at either pins A and B of the electrical supply cable connector, (as in (1) and
(3) above).
(a) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the C/B-FUEL/XFR
VALVE 2/WING/L (3QP).
(c) Repair all the unserviceable wiring and connectors.
(d) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the C/B-FUEL/XFR VALVE 2/
WING/R (4QP).
(f) Repair all the unserviceable wiring and connectors.
(7) Do the test given in Para 3.A.
(8) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
103VU .
(9) Do the test given in Para 3.A.
(10) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
103VU .
(11) Do the test given in Para 3.A.
(12) If the fault continues do a wiring check Ref. ASM 28-15-02 of the aircraft wiring:

Print Date: July 13, 2017 Page 48 of 68

· between the pin A, ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) and the terminal A3,
RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· between the pin A, ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) and the terminal B3,
RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· between the terminal A1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the terminal
B2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) and the terminalB1,
RELAY-R WING TK LOW LEVEL CHANNEL A (8QP).
(13) Repair all the unserviceable wiring and connectors.
(14) Do the test given in Para 3.A.

TASK 28-15-00-810-819-A
Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Reports L/REAR Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L REAR SPAR ( 11QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-068-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation

Print Date: July 13, 2017 Page 49 of 68

Subtask 28-15-00-810-068-A
A. If the Left Intercell Transfer Valve continues to be shown in transit on the FUEL System Display, and
the CFDS(FUEL) reports the Left Rear Valve, disconnect the electrical connector from the ACTUATOR-
TRANSFER VALVE, L REAR SPAR (11QP).

NOTE: During normal Actuator-Transfer Valve, Left Rear Spar (11QP) operation, 28VDC is supplied to
electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Check with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-
01 to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 1/WING/R (2QP), A11 at 49VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-01 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 1/WING/R (2QP), A11 at 49VU.
(5) If the voltages at pins A and B of the connector are correct, (as in (1) and (3) above), check/replace
the ACTUATOR-TRANSFER VALVE, L REAR SPAR ( 11QP ) , Ref. AMM 28-15-51-000-002 , and
Ref. AMM 28-15-51-400-002 .
(a) While the actuator is removed from the aircraft confirm that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(6) If no 28VDC is measured at either pins A and B of the electrical supply cable connector, (as in (1) and
(3) above).
(a) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) and the C/B-FUEL/XFR
VALVE 1/WING/L (1QP).
(c) Repair all the unserviceable wiring and connectors.
(d) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the C/B-FUEL/XFR VALVE 1/
WING/R (2QP).
(f) Repair all the unserviceable wiring and connectors.
(7) Do the test given in Para 3.A.
(8) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
103VU .
(9) Do the test given in Para 3.A.

Print Date: July 13, 2017 Page 50 of 68

(10) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
103VU .
(11) Do the test given in Para 3.A.
(12) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring:
· between the pin A, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal A3,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· between the pin A, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal B3,
RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· between the terminal A1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) and the terminal
B2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal B1,
RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
(13) Repair all the unserviceable wiring and connectors.
(14) Do the test given in Para 3.A.

TASK 28-15-00-810-820-A
Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL) Reports R/FWD Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R FWD SPAR ( 10QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-02
Ref. AMM 28-15-51-000-001 Removal of the Actuator
Ref. AMM 28-15-51-400-001 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-069-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

Print Date: July 13, 2017 Page 51 of 68

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-069-A
A. If the Right Intercell Transfer Valve continues to be shown in transit on the FUEL System Display, and the
CFDS(FUEL) reports the Right Foward Valve, disconnect the electrical connector from the ACTUATOR-
TRANSFER VALVE, R FWD SPAR (10QP).

NOTE: During normal Actuator-Transfer Valve, Right Forward Spar (10QP) operation, 28VDC is supplied
to the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Check with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-
02 to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 2/WING/L (3QP), M22 at 121VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-02 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 2/WING/L (3QP), M22 at 121VU.
(5) If the voltages at pins A and B of the connector correct, (as in (1) and (3) above), check/replace the
ACTUATOR-TRANSFER VALVE, R FWD SPAR ( 10QP ) , Ref. AMM 28-15-51-000-001 , and Ref.
AMM 28-15-51-400-001 .
(a) While the actuator is removed from the aircraft confirm that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(6) If no 28VDC is measured at either pins A and B of the electrical supply cable connector, (as in (1) and
(3) above).
(a) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the C/B-FUEL/XFR
VALVE 2/WING/L (3QP).
(c) Repair all the unserviceable wiring and connectors.
(d) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP).
(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-02 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the C/B-FUEL/XFR VALVE 2/
WING/R (4QP).
(f) Repair all the unserviceable wiring and connectors.
(7) Do the test given in Para 3.A.

Print Date: July 13, 2017 Page 52 of 68

(8) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
103VU .
(9) Do the test given in Para 3.A.
(10) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
103VU .
(11) Do the test given in Para 3.A.
(12) If the fault continues do a wiring check Ref. ASM 28-15-02 of the aircraft wiring:
· between the pin A, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal A3,
RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· between the pin A, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal B3,
RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· between the terminal A1, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the terminal
B2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal B1,
RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(13) Repair all the unserviceable wiring and connectors.
(14) Do the test given in Para 3.A.

TASK 28-15-00-810-821-A
Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL) Reports R/REAR Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R REAR SPAR ( 12QP )
· aircraft wiring
· RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) 103VU
· RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) 103VU
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator

Print Date: July 13, 2017 Page 53 of 68

3. Fault Confirmation
Subtask 28-15-00-710-070-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-070-A
A. If the Right Intercell Transfer Valve continues to be shown in transit on the FUEL System Display, and
the CFDS(FUEL) reports the Right Rear Valve, disconnect the electrical connector from the ACTUATOR-
TRANSFER VALVE, R REAR SPAR (12QP).

NOTE: During normal Actuator-Transfer Valve, Right Rear Spar (12QP) operation, 28VDC is supplied to
the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Test with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-01
to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-01 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(5) If the voltages at pins A and B of the connector are correct, (as in (1) and (3) above), check/replace
the ACTUATOR-TRANSFER VALVE, R REAR SPAR ( 12QP ) , Ref. AMM 28-15-51-000-002 , and
Ref. AMM 28-15-51-400-002 .
(a) While the actuator is removed from the aircraft confirm that the transfer valve drive shaft and
valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(6) If no 28VDC is measured at either pins A and B of the electrical supply cable connector, (as in (1) and
(3) above).
(a) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP).
(b) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring
between the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) and the C/B-FUEL/XFR
VALVE 1/WING/L (1QP).
(c) Repair all the unserviceable wiring and connectors.
(d) Check with a multimeter to see if 28VDC is available at:
· terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· terminal X1, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP).

Print Date: July 13, 2017 Page 54 of 68

(e) If the 28VDC is not available do a wiring check Ref. ASM 28-15-01 of the aircraft wiring between
the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the C/B-FUEL/XFR VALVE 1/
WING/R (2QP).
(f) Repair all the unserviceable wiring and connectors.
(7) Do the test given in Para 3.A.
(8) If the fault continues, check/replace the RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
103VU .
(9) Do the test given in Para 3.A.
(10) If the fault continues check/replace the RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
103VU .
(11) Do the test given in Para 3.A.
(12) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring:
· between the pin A, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal A3,
RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· between the pin A, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal B3,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· between the terminal A1, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) and the terminal
B2, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal B1,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP).
(13) Repair all the unserviceable wiring and connectors.
(14) Do the test given in Para 3.A.

TASK 28-15-00-810-822-A
Intercell XFR System - Both Valves Show XX, CFDS (FUEL) Reports All Valves

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

REFERENCE DESIGNATION
(Ref. 28-15-00-810-823-A). Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/
FWD Valve
(Ref. 28-15-00-810-824-A). Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/
REAR Valve
(Ref. 28-15-00-810-825-A). Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports
R/FWD Valve
(Ref. 28-15-00-810-826-A). Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports
R/REAR Valve
Ref. AMM 28-46-00-740-001 Functional (BITE) Test

Print Date: July 13, 2017 Page 55 of 68

3. Fault Confirmation
Subtask 28-15-00-710-071-A
A. Do the FLSS BITE test Ref. AMM 28-46-00-740-001 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-071-A
A. Read:
· the FQIS STATUS Page, CFDS (FUEL) - 06 FQIC Software Standard
· the FLSS STATUS Page, CFDS (FUEL) - 07 FQIC Software Standard.
(1) For the related XFR VALVE message shown see:
· (Ref. TSM 28-15-00-810-823) for the Left Wing Forward Intercell XFR VALVE 27QM/70QM/9QP
failure
· (Ref. TSM 28-15-00-810-824) for the Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP
failure
· (Ref. TSM 28-15-00-810-825) for the Right Wing Forward Intercell XFR VALVE 29QM/72QM/
10QP failure
· (Ref. TSM 28-15-00-810-826) for the Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP
failure .

TASK 28-15-00-810-823-A
Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/FWD Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L FWD SPAR ( 9QP )
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

Print Date: July 13, 2017 Page 56 of 68

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-02
Ref. AMM 28-15-51-000-001 Removal of the Actuator
Ref. AMM 28-15-51-400-001 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-072-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-072-A
A. If the Left Intercell Transfer Valve continues to show XX on the FUEL System Display (lower ECAM
DU), and the CFDS(FUEL) reports the Left Forward Valve, disconnect the electrical connector, from the
ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP).

NOTE: During normal Actuator-Transfer Valve, Left Forward Spar (9QP) operation, 28VDC is supplied to
the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

Print Date: July 13, 2017 Page 57 of 68

· between the pin D, ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP) and the pin 6E,
connector B, FQIC (3QT).

NOTE: In the above wiring checks it is important to test for short circuits between the lines mentioned
(pole to each pole).

(9) Repair all the unserviceable wiring and connectors.

(10) Do the test given in Para 3.A.

TASK 28-15-00-810-824-A
Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/REAR Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, L REAR SPAR ( 11QP )
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-073-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-073-A
A. If the Left Intercell Transfer Valve continues to show XX on the FUEL System Display (lower ECAM
DU), and the CFDS(FUEL) reports the Left Rear Valve, disconnect the electrical connector, from the
ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP).

Print Date: July 13, 2017 Page 58 of 68

NOTE: During normal Actuator-Transfer Valve, Left Rear Spar (11QP) operation, 28VDC is supplied to
the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Check with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-
01 to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 1/WING/R (2QP), A11 at 49VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-01 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 1/WING/R (2QP), A11 at 49VU.
(5) If the voltages at pins A and B of the connector are correct, (as in (1) and (3) above), reconnect the
electrical connector to the actuator.
(6) On the CFDS(FUEL) Input Parameters Page 3, examine the bit postions:
· E4 - LEFT REAR ICT VALVE OPEN
· F4 - LEFT REAR ICT VALVE SHUT.
If both of the positions show a 1, check/replace the ACTUATOR-TRANSFER VALVE, L REAR
SPAR ( 11QP ) , Ref. AMM 28-15-51-000-002 , and Ref. AMM 28-15-51-400-002 .
(7) Do the test given in Para 3.A.
(8) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring :
· between the pin A, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal A3,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the terminal B1,
RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· between the pin C, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the pin 11B,
connector B, FQIC (3QT)
· between the pin D, ACTUATOR-TRANSFER VALVE, L REAR SPAR (11QP) and the pin 12B,
connector B, FQIC (3QT).

NOTE: In the above wiring checks it is important to test for short circuits between the lines mentioned
(pole to each pole).

(9) Repair all the unserviceable wiring and connectors.

(10) Do the test given in Para 3.A.

TASK 28-15-00-810-825-A
Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports R/FWD Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes

Print Date: July 13, 2017 Page 59 of 68

· ACTUATOR-TRANSFER VALVE, R FWD SPAR ( 10QP )

· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-02
Ref. AMM 28-15-51-000-001 Removal of the Actuator
Ref. AMM 28-15-51-400-001 Installation of the Actuator

3. Fault Confirmation
Subtask 28-15-00-710-074-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-074-A
A. If the Right Intercell Transfer Valve continues to show XX on the FUEL System Display (lower ECAM
DU), and the CFDS(FUEL) reports the Right Forward Valve, disconnect the electrical connector, from the
ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP).

NOTE: During normal Actuator-Transfer Valve, Right Forward Spar (10QP) operation, 28VDC is supplied
to the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

Print Date: July 13, 2017 Page 60 of 68

· D4 - RIGHT FWD ICT VALVE SHUT.

If both of the positions show a 1, check/replace the ACTUATOR-TRANSFER VALVE, R FWD
SPAR ( 10QP ) , Ref. AMM 28-15-51-000-001 , and Ref. AMM 28-15-51-400-001 .
(7) Do the test given in Para 3.A.
(8) If the fault continues do a wiring check Ref. ASM 28-15-02 of the aircraft wiring :
· between the pin A, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal A3,
RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the terminal B1,
RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
· between the pin C, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the pin 7E,
connector B, FQIC (3QT)
· between the pin D, ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) and the pin 8E,
connector B, FQIC (3QT).

NOTE: In the above wiring checks it is important to test for short circuits between the lines mentioned
(pole to each pole).

(9) Repair all the unserviceable wiring and connectors.

(10) Do the test given in Para 3.A.

TASK 28-15-00-810-826-A
Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports R/REAR Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· ACTUATOR-TRANSFER VALVE, R REAR SPAR ( 12QP )
· aircraft wiring
2 Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific AR MULTIMETER - STANDARD

B. Referenced Information

REFERENCE DESIGNATION
Ref. AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to Ensure Valve Shaft
Rotates Valve to Open Position
Ref. ASM 28-15-01
Ref. AMM 28-15-51-000-002 Removal of the Actuator
Ref. AMM 28-15-51-400-002 Installation of the Actuator

3. Fault Confirmation

Print Date: July 13, 2017 Page 61 of 68

Subtask 28-15-00-710-075-A
A. Do the Operational Test of the Intercell Transfer Valves Ref. AMM 28-15-00-710-002 .

NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived
from the main power. The ICTVs are immobilized on battery power.

4. Fault Isolation
Subtask 28-15-00-810-075-A
A. If the Right Intercell Transfer Valve continues to show XX on the FUEL System Display (lower ECAM
DU), and the CFDS(FUEL) reports the Right Rear Valve, disconnect the electrical connector from the
ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP).

NOTE: During normal Actuator-Transfer Valve, Right Rear Spar (12QP) operation, 28VDC is supplied to
the electrical connector:
- on the pin A for OPEN
- on the pin B for SHUT.

(1) Check with a MULTIMETER - STANDARD, at the electrical supply cable connector Ref. ASM 28-15-
01 to see if:
· 28VDC is at pin B
· 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(3) Check with a multimeter, at the electrical supply cable connector Ref. ASM 28-15-01 to see if:
· 28VDC is at pin A
· 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(5) If the voltages at pins A and B of the connector are correct, (as in (1) and (3) above), reconnect the
electrical connector to the actuator.
(6) On the CFDS(FUEL) Input Parameters Page 3, examine the bit postions:
· G4 - RIGHT REAR ICT VALVE OPEN
· H4 - RIGHT REAR ICT VALVE SHUT.
If both of the positions show a 1, check/replace the ACTUATOR-TRANSFER VALVE, R REAR
SPAR ( 12QP ) , Ref. AMM 28-15-51-000-002 , and Ref. AMM 28-15-51-400-002 .
(7) Do the test given in Para 3.A.
(8) If the fault continues do a wiring check Ref. ASM 28-15-01 of the aircraft wiring :
· between the pin A, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal A3,
RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
· between the pin B, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal B1,
RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
· between the pin C, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the pin 13B,
connector B, FQIC (3QT)
· between the pin D, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the pin 14B,
connector B, FQIC (3QT).

NOTE: In the above wiring checks it is important to test for short circuits between the lines mentioned
(pole to each pole).

(9) Repair all the unserviceable wiring and connectors.

(10) Do the test given in Para 3.A.

Print Date: July 13, 2017 Page 62 of 68

TASK 28-15-00-810-829-A
Intercell L/R XFR OPEN, ECAM Warning Shows After Fuel Transfer

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

1. Possible Causes
· if the power-on BITE test of the Fuel Quantity Indicating Computer (FQIC) is stopped before the BITE test is
completed
· VALVE-TRANSFER, L FWD SPAR ( 27QM )
· VALVE-TRANSFER, L REAR SPAR ( 28QM )
· VALVE-TRANSFER, R FWD SPAR ( 29QM )
· VALVE-TRANSFER, R REAR SPAR ( 30QM )
2 Job Set-up Information
A. Referenced Information

REFERENCE DESIGNATION
(Ref. 28-15-00-810-803-A). Intercell XFR VALVE 27QM/70QM/9QP (Left Forward) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-804-A). Intercell XFR Valve 28QM/71QM/11QP (Left Rear) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-805-A). Intercell XFR Valve 29QM/72QM/10QP (Right Forward) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-806-A). Intercell XFR Valve 30QM/73QM/12QP (Right Rear) Fault - Stays
Closed When The Fuel In The Inner-cell Is At Low Level
(Ref. 28-15-00-810-807-A). Intercell XFR Valve Failure (Left Forward) - Open When Fuel Not Low
Level
(Ref. 28-15-00-810-808-A). Intercell XFR Valve Failure (Left Rear) - Open When Fuel Not Low
Level
(Ref. 28-15-00-810-809-A). Intercell XFR Valve Failure (Right Forward) - Open When Fuel Not
Low Level
(Ref. 28-15-00-810-810-A). Intercell XFR Valve Failure (Right Rear) - Open When Fuel Not Low
Level
Ref. AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power
Ref. AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External
Power
Ref. AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer Valves
Ref. AMM 28-42-00-740-001 Status Report (BITE)
Ref. AMM 31-60-00-860-001 EIS Start Procedure
Ref. AMM 31-60-00-860-002 EIS Stop Procedure

3. Fault Confirmation
Subtask 28-15-00-865-067-A
A. Table of the circuit breakers used in this procedure:

Print Date: July 13, 2017 Page 63 of 68

PANEL DESIGNATION FIN LOCATION

49VU FUEL/FQI/CHAN/1 1QT A13

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602

121VU FUEL/FQI/CHANNEL/1 AND 2 8QT L26
121VU FUEL/FQI/CHAN/2 2QT M27

** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Subtask 28-15-00-710-086-A
B. Test
(1) Read the Technical Follow-Up (TFU) (Ref. TFU 28.15.00.003).

NOTE: This fault can occur if the power-on BITE test of the Fuel Quantity Indicating Computer
(FQIC) is stopped before the BITE test is completed .

(a) Make sure that there is a minimum of 1500 kg fuel in the wing-tank inner-cell.

NOTE: This lets the FQIC do a power-on BITE test of the Intercell Transfer Valves (ICTV) and
the related Level Sensors. It is recommended this test is done after a refuel of the air-
craft.

(2) If the Electronic Centralized Aircraft Monitoring (ECAM) display unit is not energized:
(a) Energize the aircraft electrical circuits from the external power Ref. AMM 24-41-00-861-002 .
(b) Do the EIS start procedure (ECAM only) Ref. AMM 31-60-00-860-001 .
(c) On the ECAM control panel, push the FUEL P/BSW.
(d) On the ECAM System Display (SD), make sure that the FUEL page shows.
(e) Make sure that the Refuel/Defuel panel (800VU) is closed and the aircraft is not in the Refuel/
Defuel mode.
(3) Reset the FQIC as follows:
(a) Open, safety and tag these circuit breakers:
· 1QT
· 2QT
· 8QT.
(b) Make sure that the Fuel Quantity Indicator (FQI) for the related cell shows the X's in amber color.
(c) After 30 seconds close these C/Bs:
· 1QT
· 2QT
· 8QT.
(d) Examine the fuel SD page and make sure that:
· the FQI indication shows the fuel quantity
· the ICTV's show that the XFR valve has moved from the closed to open and then back to the
closed position.

NOTE: There will be a small transfer of fuel (approximately 10-20 kg) from the outer cells to the
inner cells when the transfer valves operate.

(e) If there is no fuel transfer, do Para 4. step (3).

Print Date: July 13, 2017 Page 64 of 68

(4) If there is fuel transfer:

(a) Do the functional (BITE) test of the intercell XFR valves Ref. AMM 28-15-00-740-002 .
(b) Do the FLSCU status report (BITE) test Ref. AMM 28-42-00-740-001 .
4. Fault Isolation
Subtask 28-15-00-810-092-A
A. Procedure
(1) Examine the Fuel Level Sensing System (FLSS) STATUS page. Look for one or more messages that
follow:
· XFR valve 27QM/70QM/9QP
· XFR valve 28QM/71QM/11QP
· XFR valve 29QM/72QM/10QP
· XFR valve 30QM/73QM/12QP.
(2) If no messages are shown in step (1), go to Para 5.
(3) If one or more messages are shown, do the applicable procedure that follows:
· If the VALVE-TRANSFER, L FWD SPAR ( 27QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-807) for intercell XFR
valve failure (Left Forward)
· If the VALVE-TRANSFER, L REAR SPAR ( 28QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-808) for intercell XFR
valve failure (Left Rear)
· If the VALVE-TRANSFER, R FWD SPAR ( 29QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-809) for intercell XFR
valve failure (Right Forward)
· If the VALVE-TRANSFER, R REAR SPAR ( 30QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-810) for intercell XFR
valve failure (Right Rear).
(4) If a transfer valve does not operate, do the applicable procedure that follows:
· If the VALVE-TRANSFER, L FWD SPAR ( 27QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-803) for intercell XFR
valve fault (Left) Forward)
· If the VALVE-TRANSFER, L REAR SPAR ( 28QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-804) for intercell XFR
valve fault (Left Rear)
· If the VALVE-TRANSFER, R FWD SPAR ( 29QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-805) for intercell XFR
valve fault (Right Forward)
· If the VALVE-TRANSFER, R REAR SPAR ( 30QM ) is shown:
Do the troubleshooting procedure (Ref. TSM 28-15-00-810-806) for intercell XFR
valve fault (Right Rear).
5. Close-up
Subtask 28-15-00-942-050-A
A. Put the Aircraft Back to its Initial Configuration
(1) Do the EIS stop procedure Ref. AMM 31-60-00-860-002 .
(2) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(3) De-energize the aircraft electrical circuits Ref. AMM 24-41-00-862-002 .
(4) Make sure that the work area is clean and clear of tools and other items.

Print Date: July 13, 2017 Page 65 of 68

28-15-00 PB 301 CONF 00 - INTERCELL TRANSFER - TASK SUPPORTING DATA

1. General
The diagrams that follow are to help you do the trouble-shooting tasks.

For the Inter Cell Transfer Valve System:

· Physical Layout see
(Ref. Fig. Inter Cell Transfer System - Physical Layout SHEET 1)

ACTUATOR
ACTUATOR 12QP
10QP

CIRCUIT
BREAKER
PNL ACTUATOR
11QP

ACTUATOR
9QP
FUEL LEVEL
SENSING CONTROL
UNITS 1 AND 2 ACTUATOR
7 AND 9QJ 11QP

FUEL FLOWS (GRAVITY INDUCED)

FROM OUTER CELL TO INNER CELL LEFT WING SHOWN
WHEN VALVES ARE OPEN A RIGHT WING SIMILAR

DRIVE ASSEMBLY
71QM
RIB 15/STA8268

VALVE 28QM

540JB VALVE 27QM

(640JB)

540KB
(640KB)

DRIVE ASSEMBLY
ACTUATOR 70QM
9QP

N_TS_281500_3_FFCM_01_00

Figure 28-15-00-11200-00-A- / SHEET 1/1 - Inter Cell Transfer System - Physical Layout
** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Print Date: July 13, 2017 Page 66 of 68

· Block Diagram see

(Ref. Fig. Inter Cell Transfer System - Block Diagram SHEET 1)
LH RH RH LH
LOW LEVEL LOW LEVEL LOW LEVEL LOW LEVEL
SENSOR SENSOR SENSOR SENSOR
CHAN 1 CHAN 1 CHAN 2 CHAN 2
16QJ1 16QJ2 15QJ2 15QJ1

FLSCU-1 FLSCU-2
7QJ 9QJ

SDAC

13QP 14QP
L OR R REAR L OR R FWD
VALVE OPEN LATCH VALVE OPEN LATCH

LATCH LATCH
5QP 6QP 8QP 7QP
L WING R WING R WING L WING
CHAN 1 LO LVL CHAN 2 LO LVL CHAN 1 LO LVL CHAN 2 LO LVL

XFR VALVE XFR VALVE XFR VALVE XFR VALVE

(28QM) (30QM) (29QM) (27QM)
ACTUATOR ACTUATOR ACTUATOR ACTUATOR
11QP 12QP 10QP 9QP

VALVE DISCRETE VALVE

POSITIONS INPUTS POSITIONS

DELATCH DELATCH
ECAM
MODE REFUEL
SELECT
SWITCH
FQIC
3QU
CFDIU MCDU

NOTE: EACH SENSOR WHEN

ITW
DRY, WILL OPEN ONE
VALVE IN EACH WING. 3QT
N_TS_281500_3_FFCN_01_00

Figure 28-15-00-11300-00-A- / SHEET 1/1 - Inter Cell Transfer System - Block Diagram
** ON A/C 001-049, 054-057, 059-100, 151-199, 601-602, 801-850, 901-901

Print Date: July 13, 2017 Page 67 of 68

2. Maintenance Notices
The maintence notices that follow are to give you an introduction or understanding of possible reported
problems associated with the ICTVs.

The maintenance notices provide useful data for the maintenance staff.
Figure 28-15-00-11200-00-A- / SHEET 1/1 - Inter Cell Transfer System - Physical Layout
Figure 28-15-00-11300-00-A- / SHEET 1/1 - Inter Cell Transfer System - Block Diagram

End of document

Print Date: July 13, 2017 Page 68 of 68

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