APU AUTO SHUT DOWN - NO FLAME, Fuel Control Unit Fault (APS 3200)

TASK 49-00-00-810-977-A
APU AUTO SHUT DOWN - NO FLAME, Fuel Control Unit Fault (APS 3200)

1. Possible Causes

wiring
FUEL CONTROL UNIT (8022KM)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2052210
ESPM 2053210
ESPM 205321A
AMM 49-00-00-710-008	Operational Test of the APU
AMM 49-32-11-000-002	Removal of the Fuel Control Unit (APS 3200)
AMM 49-32-11-400-002	Installation of the Fuel Control Unit (APS 3200)
ASM 496102

3. Fault Confirmation
Subtask 49-00-00-710-368-B ** ON A/C NOT FOR ALL

A. Do the Operational-Test of the APU AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-00-00-810-336-B ** ON A/C NOT FOR ALL

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

FUEL CTL UNIT (8022KM):
Fault Code Number: 042
Additionally:
Fault Code Number: 021 or 089 or 059 or 060

NOTE: The APU SHUTDOWNS report gives the maintenance message:
NO FLAME - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 042

do a check and repair the wiring from the ECB (59KD) AB/F11, H10, H11, J3 to the FUEL CONTROL UNIT (8022KM) P19/1, 3, 4, 2 ASM 496102 ESPM 2052210 ESPM 2053210 ESPM 205321A.

(1) If the fault continues:

replace the FUEL CONTROL UNIT (8022KM) AMM 49-32-11-000-002 and AMM 49-32-11-400-002.

Subtask 49-00-00-710-369-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:29 UTC