APU AUTO SHUT DOWN - APU FUEL VALVE FAILED OPEN, ECB (59KD) Fault (APS 3200)

TASK 49-00-00-810-972-A
APU AUTO SHUT DOWN - APU FUEL VALVE FAILED OPEN, ECB (59KD) Fault (APS 3200)

1. Possible Causes

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 49-00-00-710-358-A ** ON A/C NOT FOR ALL

A. Do the operational-test of the APU AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-00-00-810-331-B ** ON A/C NOT FOR ALL

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

ECB (59KD):
Fault Code Number: 168

NOTE: The APU SHUTDOWNS report gives the maintenance message:
APU FUEL VALVE FAILED OPEN - ECB (59KD)
APU Auto Shut Down Fault Code Number: 168

Subtask 49-00-00-710-359-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:28 UTC