DOC AIRBUS | TSM A320FLGCIU Auto Reset Fault
TASK 32-31-00-810-892-A
LGCIU Auto Reset Fault
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 32-31-00-710-081-A ** ON A/C NOT FOR ALL
Subtask 32-31-00-810-154-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:31:27 UTC
LGCIU Auto Reset Fault
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-32-00-860-009 | Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page |
| AMM 32-31-71-000-001 | Removal of the LGCIU |
| AMM 32-31-71-400-001 | Installation of the LGCIU |
| AMM 32-69-00-740-001 | BITE Check of Landing-Gear Control Interface-Unit (LGCIU) With Use of MCDU to Ensure that Continuous BITE is Operative |
Subtask 32-31-00-710-081-A ** ON A/C NOT FOR ALL
A. Test
(1) Do a check of the PFR:
(a) If there is an AUTO RESET message from LGCIU-1 [5GA1] or LGCIU-2 [5GA2] , do the subsequent step.
(2) At an MCDU, get access to the SYSTEM REPORT/TEST page for the LGCIU that reports the fault, AMM 31-32-00-860-009.
(a) Push the line key adjacent to REPORT PREVIOUS LEGS:
4. Fault Isolation(1) Do a check of the PFR:
(a) If there is an AUTO RESET message from LGCIU-1 [5GA1] or LGCIU-2 [5GA2] , do the subsequent step.
(2) At an MCDU, get access to the SYSTEM REPORT/TEST page for the LGCIU that reports the fault, AMM 31-32-00-860-009.
(a) Push the line key adjacent to REPORT PREVIOUS LEGS:
- If there is no AUTO RESET message shown in the previous legs report do the fault isolation procedure in Para. 4. A. (1)
- If there is an AUTO RESET message shown in the previous legs report. Do the fault isolation in Para. 4. A. (4)
- If there is a record of previous LGCIU AUTO RESET faults in the aircraft log. Do the fault isolation in Para. 4. A. (4).
Subtask 32-31-00-810-154-A ** ON A/C NOT FOR ALL
A. Procedure
(1) If this is the first time the fault has been shown, do a BITE test of the LGCIU shown on the PFR AMM 32-69-00-740-001.
(a) If the test is not OK, do the troubleshooting procedure related to the maintenance message.
(b) If the test is OK, do the subsequent step.
(2) Make a record of the serial number of the LGCIU that gives the fault.
(a) If the LGCIU that gives the fault is in the LGCIU-1 position, interchange it with LGCIU-2, AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(b) If the LGCIU that gives the fault is in the LGCIU-2 position, keep it in LGCIU-2 position.
(4) If the same fault has been recorded before on the LGCIU with the same serial number, replace that defective LGCIU-1 [5GA1] or LGCIU-2 [5GA2] , AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(1) If this is the first time the fault has been shown, do a BITE test of the LGCIU shown on the PFR AMM 32-69-00-740-001.
(a) If the test is not OK, do the troubleshooting procedure related to the maintenance message.
(b) If the test is OK, do the subsequent step.
(2) Make a record of the serial number of the LGCIU that gives the fault.
(a) If the LGCIU that gives the fault is in the LGCIU-1 position, interchange it with LGCIU-2, AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(b) If the LGCIU that gives the fault is in the LGCIU-2 position, keep it in LGCIU-2 position.
NOTE: The LGCIU which is thought to be unserviceable can be used again on the subsequent flight, if it is in the LGCIU-2 position.
(3) Make a record in the aircraft log to do a check for an AUTO RESET fault after the subsequent 5 flights. (4) If the same fault has been recorded before on the LGCIU with the same serial number, replace that defective LGCIU-1 [5GA1] or LGCIU-2 [5GA2] , AMM 32-31-71-000-001 and AMM 32-31-71-400-001.