Loss of the IR OUTPUT BUS 2 Signal from the ADIRU 1

TASK 32-51-00-810-802-A
Loss of the IR OUTPUT BUS 2 Signal from the ADIRU 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 324202
AMM 32-42-34-000-001	Removal of the Braking/Steering Control Unit (BSCU)
AMM 32-42-34-400-001	Installation of the Braking/Steering Control Unit (BSCU)
AMM 32-46-00-740-001	BITE Test of the BSCU

3. Fault Confirmation
Subtask 32-51-00-740-052-A

A. Test
(1) Do a reset of the BSCU with the A/SKID AND NOSE WHEEL switch (5GG).
(2) Do the BITE test of the BSCU AMM 32-46-00-740-001.

4. Fault Isolation
Subtask 32-51-00-810-051-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message ADIRU1(1FP1)/BSCU(10GG):

(1) If the fault continues:

do a check and repair the wiring from the BSCU (10GG) pins AA/11J, 11H to the first terminal block ASM 324202.

Subtask 32-51-00-810-051-C ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message BSCU : NO DATA FROM ADIRU1

(1) If the fault continues:

do a check and repair the wiring from the BSCU (10GG) pins AA/11J, 11H to the first terminal block ASM 324202.

Subtask 32-51-00-740-053-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:31:47 UTC