Failure of the Electrical Wiring between the BCL1 and the ADIRU1 or the LGCIU

TASK 24-38-00-810-822-A
Failure of the Electrical Wiring between the BCL1 and the ADIRU1 or the LGCIU

1. Possible Causes

wiring
BCL-1 [1PB1]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 242402
AMM 24-38-00-710-001	Operational Test of the Battery Charge Limiter (BCL), (with the CFDS)
ASM 243801
AMM 24-38-34-000-001	Removal of the Battery Charge Limiter (BCL)
AMM 24-38-34-400-001	Installation of the Battery Charge Limiter (BCL)

3. Fault Confirmation
Subtask 24-38-00-710-084-A

A. Test
Do the operational test of the BCL1 AMM 24-38-00-710-001.

4. Fault Isolation
Subtask 24-38-00-810-071-A

A. If the test gives the maintenance message BCL1 : LGCIU/ADIRU1 SIGNAL DISAGREE:

NOTE: This CFDS message can be found with these CFDS messages:
. LGCIU1 or
. ADIRU1 and
BCL2 : LGCIU/ADIRU1 SIGNAL DISAGREE.
In this case, refer to the related trouble shooting.
If not do the trouble shooting given below:

do a check of the wiring for open circuit or short to ground:
. from the pin A/g of the BCL1 to the first branch point
. between the pin A/K of the BCL1 and the pin B/2D of the LGCIU1 ASM 242402 and ASM 243801.

(1) If the wiring is not correct:

repair it.

(2) If the wiring is correct:

replace the BCL-1 [1PB1] AMM 24-38-34-000-001 and AMM 24-38-34-400-001.

Subtask 24-38-00-710-085-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:26:48 UTC