APU AUTO SHUT DOWN - ECB FAILURE, ECB 59KD Fault (APS 3200)

TASK 49-00-00-810-885-A
APU AUTO SHUT DOWN - ECB FAILURE, ECB 59KD Fault (APS 3200)

1. Possible Causes

ELECTRONIC CONTROL BOX [59KD]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 49-00-00-710-008	Operational Test of the APU
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 49-00-00-710-218-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU (4005KM) AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-00-00-810-136-C ** ON A/C NOT FOR ALL

A. If the APU Last Leg Report gives the maintenance message:

ECB (59KD):
One out of Fault Code Number: 061, 074, 104, 105, 108-111, 132, 150-164, 167, 173

NOTE: The APU SHUTDOWNS report gives the maintenance message:
ECB FAILURE - ECB (59KD)
One out of APU Auto Shut Down Fault Code Number: 061, 074, 104, 105, 108-111, 132, 150-164,167, 173

replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-002 and AMM 49-61-34-400-002.

Subtask 49-00-00-710-219-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:23 UTC