(a) If there is no ECB related fault message:

 - replace the INLET GUIDE VANE ACTUATOR P21 (Ref. AMM TASK 49-23-51-000-002) and (Ref. AMM TASK 49-23-51-400-002).

 (b) If the fault continues:

 - disconnect the connector P18 of the SURGE CTL VALVE (TORQUE MOTOR).

 - do the operational test of the APU again and ignore SCV related fault messages.

 1 If there is no ECB related fault message:
_

 - replace the SURGE CONTROL VALVE P18 (Ref. AMM TASK 49-51-52-000-002) and (Ref. AMM TASK 49-51-52-400-002).
 2 If the fault continues:
_

 - disconnect the connector P19 of the FCU (TORQUE MOTOR).

 - do the operational test of the APU again and ignore FCU related fault messages.

 a If there is no ECB related fault message:
_

 - replace the FUEL CONTROL UNIT P19 (Ref. AMM TASK 49-32-11-000-001) and (Ref. AMM TASK 49-32-11-400-001).
R **ON A/C 063-099, 401-499,
 A. If an APU shutdown occurs during the operational test and the APU SHUTDOWNS report gives the maintenance message:
 ECB FAILURE - ECB 59KD: with the LRU TROUBLE SHOOT DATA menu information ECB INTERNAL FAILURE Fault Code Number: 005 or 176 or 177 or 178 or 179 or 180 or 230
 or

 UNDERSPEED - ECB 59KD
 with the LRU TROUBLE SHOOT DATA menu information
 ECB INTERNAL FAILURE
 Fault Code Number: 173

 or

 NO FLAME - ECB 59KD
 with the LRU TROUBLE SHOOT DATA menu information
 ECB INTERNAL FAILURE
 Fault Code Number: 173

 or

 SENSOR FAILURE - ECB 59KD
 with the LRU TROUBLE SHOOT DATA menu information

 「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 : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 226
 Config-1 Aug 01/05 CES

 ECB INTERNAL FAILURE
 Fault Code Number: 038

 or

 NO ACCELERATION - ECB 59KD:
 with the LRU TROUBLE SHOOT DATA menu information
 ECB INTERNAL FAILURE
 Fault Code Number: 173

 or

 LOSS OF SPEED - ECB 59KD:
 with the LRU TROUBLE SHOOT DATA menu information
 ECB INTERNAL FAILURE
 Fault Code Number: 004

 - replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
R **ON A/C 001-003, 051-099, 401-499,
 B. Do the test given in para. 3.

 TASK 49-00-00-810-810
 APU AUTO SHUT DOWN - LOSS OF SPEED, Speed Indication System 1 Fault (GTCP
 36-300)
 1. Possible Causes
_______________
 - SPEED SENSOR 1 P26

 - ECB (59KD)

 - SPEED SENSOR (8060KM1)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
49-70-00-810-801 Speed Sensor 1 (P26) Defective (GTCP 36-300) AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300) AMM 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD)
 (GTCP 36-300) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-71-13-000-001 Removal of the Speed Sensors (8060KM1) and (8060KM2) (GTCP 36-300) AMM 49-71-13-400-001 Installation of the Speed Sensor (8060KM1) and (8060KM2) (GTCP 36-300)
 3. Fault Confirmation
__________________
 **ON A/C 001-003, 051-062,
 A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
 NOTE : If this fault has occured, the APU will not start again. If you
____ try to start the APU again, the maintenance message will be START TIME EXCEEDED - STARTER MOTOR 8KA.
R **ON A/C 063-099, 401-499,
 A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
 「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 : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 228

R **ON A/C 001-003, 051-099, 401-499,
 4. Fault Isolation
_______________
 **ON A/C 001-003, 051-062,
 A. If an APU auto shutdown occurs during the operational test of the APU and the APU SHUTDOWNS report gives the maintenance message:
 START TIME EXCEEDED - STARTER MOTOR 8KA
　
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