W DOC AIRBUS | TSM A320F

ACT 2 HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS

TASK 28-46-00-810-832-A
ACT 2 HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
1. Possible Causes
  • lamp
  • CTL PNL-REFUEL/DEFUEL (ACT) [801VU]
  • INDICATOR-HIGH LEVEL ACT (58QJ), Part of 801VU
  • diode module (4003VD), Part of 801VU
  • aircraft wiring
  • CTL PNL-REFUEL/DEFUEL [800VU]
  • SWITCH-TEST/HIGH/LTS (2QJ), Part of 800VU
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
TSM TASK 28-46-00-810-820-A
LEFT HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS
TSM TASK 28-46-00-810-821-A
RIGHT HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS
TSM TASK 28-46-00-810-822-A
CTR HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS
TSM TASK 28-46-00-810-826-A
ACT 1 HI LVL Indicator Lamp Does Not Come On When TEST Switch Set To LTS
ASM 282503
AMM 28-25-55-000-001
Removal of the Refuel Panel
AMM 28-25-55-400-001
Installation of the Refuel Panel
AMM 28-25-58-000-001
Removal of the Refuel Panel
AMM 28-25-58-400-001
Installation of the Refuel Panel
AMM 28-46-00-710-001
Test of the Tank High-Level Sensing-System
ASM 284601
3. Fault Confirmation
Subtask 28-46-00-710-063-A ** ON A/C NOT FOR ALL
A. Test
   (1) Use the procedure AMM 28-46-00-710-001 and do a test of the HI LVL lights, do not include Para. 4.B.
NOTE: The OPEN DEFUEL/XFR lamp (21QU) comes on when the TEST switch is set at LTS.
The OPEN DEFUEL/XFR indicator lamp (21QU):
  • 28VDC supply is from a different C/B
  • switched ground uses the same contacts of SWITCH-TEST/HIGH/LTS (2QJ).
4. Fault Isolation
Subtask 28-46-00-810-081-A ** ON A/C NOT FOR ALL
A. Procedure
   (1) At the CTL PNL-REFUEL/DEFUEL (800VU), set and hold the TEST switch to LTS.
   (2) If the HI LVL indicator lamps on the CTL PNL-REFUEL/DEFUEL (800VU) do not come on, Trouble-shoot those indicators as follows:
   (3) If the ACT 1 HI LVL indicator lamp (49QJ) on the CTL PNL-REFUEL/DEFUEL (ACT) (801VU) does not come on:
   (4) If the ACT 2 HI LVL indicator lamp (58QJ) on the CTL PNL-REFUEL/DEFUEL (ACT) (801VU) does not come on:
  • replace the ACT 2 HI LVL indicator lamp .
   (5) If the fault continues:
   (6) Do a check ASM 284601 with a MULTIMETER - STANDARD, to make sure that:
     (a) A 28VDC supply is available at the free connector 4067VC-A, pin B.
     (b) A ground is available at the free connector 4067VC-A, pin C while the TEST switch is set in the LTS position.
   (7) If the 28VDC supply and the ground is available at the free connector as specified in step (6)(a) and (b):
     (a) Replace the CTL PNL-REFUEL/DEFUEL (ACT) [801VU] AMM 28-25-58-000-001 and AMM 28-25-58-400-001.
       1 If the fault continues, go to step (10).
     (b) If due to airline operational conditions it is not possible to replace the CTL PNL-REFUEL/DEFUEL (ACT) (801VU) and internal Trouble-shooting is required, continue as follows:
       1 Do a check of ASM 284601 and replace, if necessary:
  • the INDICATOR-HIGH LEVEL ACT (58QJ), Part of 801VU
  • the diode between terminals 3 and 4 of diode module (4003VD), Part of 801VU.
       2 Do a check of and repair as necessary the CTL PNL-REFUEL/DEFUEL (ACT) (801VU) internal wiring as follows:
  • between the connector 4067VC, pin B and IND-HI LVL ACT (58QJ), terminal 4
  • between the IND-HI LVL ACT (58QJ), terminal 5 and terminals III, II, and I (loop connections)
  • between the IND-HI LVL ACT (58QJ), terminal II and diode module 4003VD, terminal 3
  • between the diode module 4003VD, terminal 4 and connector 4067VC, pin C.
       3 Install the CTL PNL-REFUEL/DEFUEL (ACT) (801VU) AMM 28-25-58-400-001.
       4 Do the test given in Para. 3.A.
       5 If the fault continues, go to step (10).
   (8) If the 28VDC supply is not available in Step (6)(a):
     (a) Do a check of the aircraft wiring ASM 284601 between the free connector 4067VC-A, pin B and the free connector 4023VC-A, pin W (28VDC supply line).
     (b) Repair all the unserviceable wiring and connectors.
     (c) Do the test given in Para. 3.A.
     (d) If the fault continues, go to step (10).
   (9) If the ground is not available in Step (6)(b):
     (a) Do a check of the aircraft wiring ASM 284601 between the free connector 4067VC-A, pin C and the free connector 4023VC-A, pin X (ground line).
     (b) Repair all the unserviceable wiring and connectors.
     (c) Do the test given in Para. 3.A.
     (d) If the fault continues, go to step (10).
   (10) Replace the CTL PNL-REFUEL/DEFUEL [800VU] AMM 28-25-55-000-001 and AMM 28-25-55-400-001.
   (11) If due to airline operational conditions it is not possible to replace the CTL PNL-REFUEL/DEFUEL (800VU) and internal Trouble-shooting is required, continue as follows:
     (a) Remove the CTL PNL-REFUEL/DEFUEL (800VU) AMM 28-25-55-000-001.
     (b) Do a check of ASM 282503 and replace, if necessary, the SWITCH-TEST/HIGH/LTS (2QJ), Part of 800VU.
     (c) Do a check of ASM 282503 and repair, if necessary, the CTL PNL-REFUEL/DEFUEL (800VU) internal wiring as follows:
  • between the connector 4023VC, pin <C and terminal block 4001VT, terminal 5C
  • between the connector 4023VC, pin W and terminal block 4001VT, terminal 5K
  • between the connector 4024VC, pin <J and the SWITCH-TEST/HIGH/LTS (2QJ), terminal 1A
  • between the SWITCH-TEST/HIGH/LTS (2QJ), terminal 3A and the terminal block 4001VT, terminal 4B
  • between the terminal block 4001VT, terminal 4G and the connector 4023VC, pin X.
     (d) Install the CTL PNL-REFUEL/DEFUEL (800VU) AMM 28-25-55-400-001.
[Rev.8 from Aug 2018] 2026.04.04 04:39:40 UTC
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