Bad Data from the CFDIU Detected by the ILS1

TASK 34-36-00-810-888-A
Bad Data from the CFDIU Detected by the ILS1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-32-00-740-002	BITE Test of the Centralized Fault Display Interface Unit (CFDIU)
ASM 313202
AMM 31-32-34-000-001	Removal of the CFDIU
AMM 31-32-34-400-001	Installation of the CFDIU
AMM 34-36-00-740-002	BITE Test of the ILS

3. Fault Confirmation
Subtask 34-36-00-740-182-A

A. Test
(1) Do the BITE test of the CFDIU AMM 31-32-00-740-002.

4. Fault Isolation
Subtask 34-36-00-810-154-A

A. If the test gives the maintenance message ILS1 BAD DATA FROM CFDIU:

(1) If the fault continues:

do a check and repair the wiring from the CFDIU (1TW) pins AA/2B, 2C to the first terminal block , ASM 313202.

5. Close-up
Subtask 34-36-00-740-183-A

A. Do the BITE test of the ILS1 AMM 34-36-00-740-002.

[Rev.8 from Aug 2018] 2026.04.04 04:33:03 UTC