Failure of the Left or Right Pedal Position Transducer Unit for ELAC 1

TASK 27-10-00-810-846-A
Failure of the Left or Right Pedal Position Transducer Unit for ELAC 1

1. Possible Causes

ELAC-1 [2CE1]
wiring from the ELAC-1 (2CE1) to the XDCR UNIT-PEDAL POS, L (25CE1)
wiring from the ELAC-1 (2CE1) to the XDCR UNIT-PEDAL POS, R (25CE2)
XDCR UNIT-PEDAL POS, L [25CE1]
XDCR UNIT-PEDAL POS, R [25CE2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-24-00-710-001	Operational Test of the Rudder Hydraulic Actuation
AMM 27-92-15-000-001	Removal of the Pedal Position Transducer Unit
AMM 27-92-15-400-001	Installation of the Pedal Position Transducer Unit
ASM 279223
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-10-00-700-106-A

A. Test
(1) Do the operational test of the rudder hydraulic actuation AMM 27-24-00-710-001.
(2) Do the BITE test of the EFCS (Ground Scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-10-00-810-098-A

A. If the BITE test gives the maintenance message L or R PEDALS XDCR UNIT:
(1) Replace the ELAC-1 [2CE1] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
(2) If the fault continues:

Do a check and repair the wiring from the ELAC-1 (2CE1) to the XDCR UNIT-PEDAL POS, L (25CE1) ASM 279223.

(a) If the fault continues:

Do a check and repair the wiring from the ELAC-1 (2CE1) to the XDCR UNIT-PEDAL POS, R (25CE2) ASM 279223.

(3) If the fault continues:

replace the XDCR UNIT-PEDAL POS, L [25CE1] , AMM 27-92-15-000-001 and AMM 27-92-15-400-001.

(a) If the fault continues:

replace the XDCR UNIT-PEDAL POS, R [25CE2] , AMM 27-92-15-000-001 and AMM 27-92-15-400-001.

Subtask 27-10-00-700-107-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:29 UTC