Disagree between ADIRU3, ADM3 and ADM8 SDI Codes

TASK 34-13-00-810-966-A
Disagree between ADIRU3, ADM3 and ADM8 SDI Codes

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-11-17-000-001	Removal of the Air Data Module
AMM 34-11-17-400-001	Installation of the Air Data Module
ASM 341203
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-13-00-740-002	INTERFACE TEST of the ADR
ASM 341303

3. Fault Confirmation
Subtask 34-13-00-740-297-A

A. Test
Do the Interface test of the ADR (system 3) AMM 34-13-00-740-002.

4. Fault Isolation
Subtask 34-13-00-810-217-A

A. If the test gives the maintenance message WRG: SDI PIN PROG/ ADM3/8 (19FP3/8)/ ADIRU3 (1FP3):

remove the ADIRU-3 [1FP3] AMM 34-12-34-000-001
do a check of the SDI pin programming, pins AB/1A, 5A, 6A on the rack connector
compare the state of the pins with the SDI pin programming given in the ASM ASM 341203.

(1) If the pin programming is incorrect:

(2) If the pin programming is correct:

get access to the ADM (19FP3) AMM 34-11-17-000-001 (Para. 2.B.)
disconnect the electrical connector of the ADM (19FP3)
make sure that there is continuity between pins A/J, K, L, P and that there is an open circuit between pins A/M, N ASM 341303.

(a) If the pin programming is incorrect:

(b) If the pin programming is correct:

1 If the pin programming is incorrect:

2 If the pin programming is correct:

a If the fault continues:

replace the ADM-STBY TOTAL PRESSURE [19FP3] AMM 34-11-17-000-001 and AMM 34-11-17-400-001.
If the fault continues:
replace the ADM-STBY STATIC PRESSURE [19FP8] .

Subtask 34-13-00-740-298-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:31 UTC