Fuel Control Unit Fault (APS 3200)

TASK 49-00-00-810-980-A
Fuel Control Unit Fault (APS 3200)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 204821A
ESPM 2052210
ESPM 2052240
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 49-00-00-710-374-B ** ON A/C NOT FOR ALL

A. Access the APU last leg report

If the fault message FUEL CTL UNIT (8022KM) is associated to fault code 59 or 60, access fault conditions screen from the prompt next to the failure message.
Check the APU operating state (OPST) and APU RPM (NA).
If OPST is 0 (power up), the fault is confirmed, follow the trouble-shooting instructions in #agrave# 4A.
If OPST is 1,2,3....or 12 or if the APU RPM is not null, the fault message is spurious and may be disregarded. In this case performe the APU operational test AMM 49-00-00-710-008 and confirm that the message is not logged again.

NOTE: Make sure that 5 seconds elapsed between APU MASTER P/BSW ON and the APU START P/BSW is pressed in.

4. Fault Isolation
Subtask 49-00-00-810-339-B ** ON A/C NOT FOR ALL

A. Maintenance Action
(1) If the APU Last Leg Report gives the maintenance message:

FUEL CTL UNIT (8022KM):
Fault Code Number: 021 or 089

do a check of the FUEL CONTROL UNIT connector P19 and replace the contacts in bad condition ESPM 2052240 ESPM 204821A.

(a) If the fault continues:

do a check and repair the wiring from the ECB (59KD) AB/F11, J3 to the FUEL CONTROL UNIT (8022KM) P19/1, 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.

(2) If the APU Last Leg Report gives the maintenance message:

FUEL CTL UNIT (8022KM):
Fault Code Number: 059 or 060

do a check of the FUEL CONTROL UNIT connector P19 and replace the contacts in bad condition ESPM 2052240 ESPM 204821A.

(a) If the fault continues:

do a check and repair the wiring from the ECB (59KD) AB/H10, H11 to the FUEL CONTROL UNIT (8022KM) P19/3, 4 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 49-00-00-710-375-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