Failure of the Electrical Wiring between the BCL2 and the ADIRU1 or the LGCIU

TASK 24-38-00-810-823-A
Failure of the Electrical Wiring between the BCL2 and the ADIRU1 or the LGCIU

1. Possible Causes

wiring
BCL-2 [1PB2]

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 24-38-00-710-086-A

A. Test
Do the operational test of the BCL2 AMM 24-38-00-710-001.

4. Fault Isolation
Subtask 24-38-00-810-072-A

A. If the test gives the maintenance message BCL2 : LGCIU/ADIRU1 SIGNAL DISAGREE:

NOTE: This CFDS message can be found with these CFDS messages:
. LGCIU1 or
. ADIRU1 and
BCL1 : LGCIU/ADIRU1 SIGNAL DISAGREE.
In this case, do 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 BCL2 to the first branch point.
. between the pin A/K of the BCL2 and the pin B/4C 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-2 [1PB2] AMM 24-38-34-000-001 and AMM 24-38-34-400-001.

Subtask 24-38-00-710-087-A

B. Do the test given in Para. 3.A.

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