Failure of the Battery 1 Contactor

TASK 24-38-00-810-806-A
Failure of the Battery 1 Contactor

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
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)
AMM 24-38-55-000-001	Removal of the Battery Line Contactor
AMM 24-38-55-400-001	Installation of the Battery Line Contactor

3. Fault Confirmation
Subtask 24-38-00-710-060-A

A. Test
Do the operational test of BCL 1 AMM 24-38-00-710-001.

4. Fault Isolation
Subtask 24-38-00-810-055-A

A. If the test gives the maintenance message CHECK CONTACTOR 6PB1/BCL1 CIRCUIT:

(1) If the fault continues:

(a) If the fault continues:

Do a check of the wiring ASM 243801 between:
. Pin B/5 of the battery 1 line-contactor (6PB1) and pin A/G of BCL 1 (1PB1)
. Pin B/3 of the battery 1 line-contactor and pin 1 of circuit breaker FLT CTL/SEC 1/STBY/SPLY (22CE)
. Pin B/15 of the battery 1 line-contactor and pin A/<I of BCL 1 (1PB1)
. Pin B/17 of battery 1 line-contactor and the ground.

1 If the wiring is not correct:

2 If the wiring is correct:

Do a check and repair the wiring ASM 243801 between:
. Pin A/A1 of the battery 1 pushbutton-switch (7PB1) and pin A/F of BCL 1 (1PB1)
. Pin A/A3 of the battery 1 pushbutton-switch and the ground.

Subtask 24-38-00-710-061-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:26:47 UTC