Failure of the Battery 2 Contactor

TASK 24-38-00-810-813-A
Failure of the Battery 2 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 243802
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 24-38-00-710-074-A

A. Test
Do the operational test of the BCL 2 AMM 24-38-00-710-001.

4. Fault Isolation
Subtask 24-38-00-810-062-A

A. If the test gives the maintenance message CHECK CONTACTOR 6PB2/BCL 2 CIRCUIT:

(1) If the fault continues:

(a) If the fault continues:

Do a check of the wiring ASM 243802 between:
. Pin B/5 of the battery 2 line contactor (6PB2) and pin A/G of the BCL 2 (1PB2).
. Pin B/3 of the battery 2 line contactor and pin 1 of the circuit breaker ELEC/HOT BUS/702PPSPLY (5PB2).
. Pin B/15 of the battery 2 line contactor and pin A/i of the BCL 2.
. Pin B/17 of battery 2 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 243802 between:
. Pin A/A1 of the battery 2 pushbutton switch (7PB2) and pin A/F of the BCL 2.
. Pin A/A3 of the battery 2 pushbutton switch and the ground.

Subtask 24-38-00-710-075-A

B. Do the test given in Para. 3.

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