1_ If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and
(Ref. AMM TASK 49-61-34-400-002).
(2) If the APU Last Leg Report gives the maintenance message:
INLET T-P SNSR (8013KM): Fault Code Number: 008 or 009
- replace the INLET T-P SENSOR (8013KM) (Ref. AMM TASK 49-23-17-000-001) and (Ref. AMM TASK 49-23-17-400-001).
(a) If the fault continues:
- do a check and repair the wiring (Temperature Side of the Sensor) from the ECB (59KD) D3, E6 to the INLET T-P SENSOR P22/ 6, 5 (Ref. ASM 49-61/02).
1 If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
B. Do the test given in para. 3.
TASK 49-00-00-810-909
Fuel Supply Fault (APS 3200)
1. Possible Causes_______________
- APU fuel pump-system
- air is in the APU fuel line
- APU FUEL LP-SWITCH (5030QM)
- wiring
- ECB (59KD)
- APU fuel low pressure
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
28-22-00-810-801 APU Fuel System - Low Pressure
AMM 28-22-00-710-001 Operational Test of the APU Fuel-Pump System on Ground to Purge the Fuel Line
AMM 28-22-14-000-001 Removal of the APU Fuel LP-Switch 5030QM
AMM 28-22-14-400-001 Installation of the APU Fuel LP-Switch 5030QM
AMM 49-00-00-710-008 Operational Test of the APU (APS 3200)
AMM 49-31-00-710-002 Operational Test of the APU Fuel Low Pressure Circuit (APS 3200)
AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200)
AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB) (59KD) (APS 3200)
ASM 49-61/02
3. Fault Confirmation__________________
A. Test
(1) Do the operational test of the APU fuel low pressure warning (Ref. AMM TASK 49-31-00-710-002).
(2) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
4. Fault Isolation
_______________
A. If the APU Last Leg Report gives the maintenance message:
FUEL LOW PRESS / LOW FUEL PRESS SW (5030QM): Fault Code Number: 112
- do the operational test of the APU fuel pump-system (Ref. AMM TASK 28-22-00-710-001) and make sure that no air is in the APU fuel line.
(1) If the fault continues:
- replace the APU FUEL LP-SWITCH (5030QM) (Ref. AMM TASK 28-22-14-000-001) and (Ref. AMM TASK 28-22-14-400-001).
(a) If the fault continues:
- do a check and repair the wiring from the ECB 59KD AB/B7, B8 to the APU FUEL LP-SWITCH (5030QM) P17/1, 2 (Ref. ASM 49-61/02).
1_ If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and
(Ref. AMM TASK 49-61-34-400-002).
B. If the operational test of the APU fuel low pressure warning gives that the FUEL LO PR advisory is abnormally on:
- do the trouble shooting of the APU fuel low pressure (Ref. TASK 28-22-00-810-801).
C. Do the test given in para. 3.
TASK 49-00-00-810-910
Air-Intake Flap-Actuator Fault (APS 3200)
1. Possible Causes
_______________
- wiring
- AIR INTAKE FLAP-ACTUATOR (4015KM)
- ECB (59KD)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-16-00-210-002 Detailed Inspection of APU Air Intake, Diffuser Elbow, Seals and Felt Metal (APS 3200) AMM 49-16-00-710-002 Operational Test of the Air Intake Flap and Diverter (APS 3200) AMM 49-16-51-000-002 Removal of the Air-Intake Flap Actuator (4015KM) (APS 3200) AMM 49-16-51-400-002 Installation of the Air-Intake Flap Actuator (4015KM) (APS 3200) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB) (59KD) (APS 3200) ASM 49-16/01
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