Incorrect Pin Coding (APS 3200)

TASK 49-61-00-810-805-A
Incorrect Pin Coding (APS 3200)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2052210
ESPM 2053210
ASM 496101
AMM 49-61-34-000-002	Removal of the Electronic Control Box (ECB) (APS 3200)
AMM 49-61-34-400-002	Installation of the Electronic Control Box (ECB) (APS 3200)

3. Fault Confirmation
Subtask 49-61-00-710-058-A ** ON A/C NOT FOR ALL

A. Cycle the APU Master SW p/bsw 14KD to perform the Power-Up Test of the ECB.

NOTE: The Master SW ON state must be active for at least 10 seconds.

4. Fault Isolation
Subtask 49-61-00-810-054-B ** ON A/C NOT FOR ALL

A. If the APU Class 3 Faults Page gives the maintenance message:

WRG: ACFT TYPE PIN PROG / ECB (59KD):
Fault Code Number: 124

do a check and make sure that the two A321 IDENTIFICATION signals at the ECB (59KD) AB/A12, A13 ASM 496101 are the same.

(1) If the two A321 IDENTIFICATION signals are not the same:

do a check and repair the wiring to the ECB (59KD) AB/A12, A13 ASM 496101 ESPM 2052210 ESPM 2053210.

(a) If the fault continues:

(2) If the two A321 IDENTIFICATION are the same:

Subtask 49-61-00-710-059-B ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:40 UTC