- replace the FUEL CONTROL UNIT (P19) (Ref. AMM TASK 49-32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003).

 (b) If the resistance is < 100 Ohms:

 - do a check and repair of the aircraft wiring from the ECB (59KD) AB/H11,G7 to the FUEL CONTROL UNIT (P19) P19/6,7 (Ref. ASM 49-61/02).
 1 If the fault continues:
_
 - replace the Fuel Filter (8028KM) (Ref. AMM TASK 49-32-41-920-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 266
 201-210, Config-1 Aug 01/05 CES a If the fault continues:

_
 - do a check of the FUEL CONTROL UNIT drive:

 - remove the FCU (P19) (Ref. AMM TASK 49-32-11-000-003),

 - remove the end cap from the STARTER MOTOR (8KA),

 - use a socket and a ratchet on the shaft of the STARTER MOTOR (8KA) to turn the APU counterclockwise,

 - verify the LUBE PUMP shaft turns.

 - -- if the LUBE PUMP shaft does not turn: -- replace the LUBE OIL MODULE (8080KM) (Ref. AMM TASK 49-91-45-000-003)
 (Ref. AMM TASK 49-91-45-400-003)
 - -- if the LUBE PUMP shaft turns: -- replace the FUEL CONTROL UNIT (P19) (Ref. AMM TASK 49-32-11-400-003)
 - --- if the fault continues:
 - replace the ELECTRONIC CONTROL BOX (59KD) --- (Ref. AMM TASK 49-61-34-000-003)
 --- (Ref. AMM TASK 49-61-34-400-003). **ON A/C 001-049, 101-105, 151-199, 201-210, Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
 A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
 NO FLAME
 FUEL CTRL UNIT(8022KM) / APU FUEL SUPPLY

 associated with Fault Code Number (FCN) 79
 - do a check for damage/contamination of electrical connector P19 of the FUEL CONTROL UNIT (8022KM)
 (1) If the electrical connector P19 is damaged/contaminated:
 - do a repair/cleaning.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 267
 201-210, Config-1 Aug 01/05 CES

 (2) If the electrical connector is OK:
 - use a multimeter to do a resistance check across pin 6 and pin 7 of the FUEL CONTROL UNIT (8022KM)
 (a) If the resistance is > 100 Ohms:

 - replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003).

 (b) If the resistance is < 100 Ohms:

 - do a check and repair of the aircraft wiring from the ECB (59KD) AB/H11,G7 to the FUEL CONTROL UNIT (8022KM) P19/6,7 (Ref. ASM 49-61/02).
 1 If the fault continues:
_
 - replace the FUEL FILTER (8028KM)
 (Ref. AMM TASK 49-32-41-920-001).
 a If the fault continues:
_
 - replace the Fuel Filter (8028KM)
 (Ref. AMM TASK 49-32-41-920-001).
 b If the fault continues:
_
 - do a check of the FUEL CONTROL UNIT drive:

 - remove the FCU (8022KM)

 (Ref. AMM TASK 49-32-11-000-003),

 - remove the end cap from the STARTER MOTOR (8KA),

 - use a socket and a ratchet on the shaft of the STARTER MOTOR (8KA) to turn the APU counterclockwise,

 - verify the LUBE PUMP shaft turns.

 - -- if the LUBE PUMP shaft does not turn: -- replace the LUBE OIL MODULE (8080KM)
 (Ref. AMM TASK 49-91-45-000-003) (Ref. AMM TASK 49-91-45-400-003) - -- if the LUBE PUMP shaft turns: -- replace the FUEL CONTROL UNIT (8022KM)
 (Ref. AMM TASK 49-32-11-400-003)
 - --- if the fault continues:
 - replace the ELECTRONIC CONTROL BOX (59KD)
 --- (Ref. AMM TASK 49-61-34-000-003) --- (Ref. AMM TASK 49-61-34-400-003).

R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,

 B. Do the test given in para. 3.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 269
 201-210, Config-1 Aug 01/05 CES

 TASK 49-00-81-810-825

 APU AUTO SHUTDOWN - NO FLAME, Ignition Unit Fault (131-9(A))
 1. Possible Causes
_______________
 - IGNITION UNIT SHOWS OPEN CIRCUIT

 - IGNITION UNIT SHOWS SHORT CIRCUIT

 - damage/contamination of the electrical connector P10

 - IGNITION UNIT (P10)
　
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