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73-21-00-195
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - GENERAL
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - GENERAL
EFFECTIVITY
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
The EEC built-in test equipment (BITE) monitors engine and
airplane sensors, actuators, and switches. These are the
components and signals the EEC BITE monitors:
* ADIRU signals
* Air ground signal
* Airplane model signals from the strut
GUN ALL PRE SB CFM56-7B 73-44
* Burner staging valve (BSV)
GUN 201-999
* Debris monitoring system (DMS)
GUN ALL
* Display electronic unit (DEU) signals
* EEC alternator
* EEC over temperature
* EEC switch
* EHSVs in the HMU
* Engine identification plug
* Engine position signal from the strut
* Flap position signals
* Fuel flow meter
* Fuel metering valve (FMV)
* HPTACC sensor
* HPTACC valve
* Hydromechanical unit (HMU)
* Ignition system
* Internal EEC faults
* LPTACC valve
* N1 speed sensor
* N2 speed sensor
* Oil filter switch
* Oil pressure sensor
* Oil temperature sensor
* P0 signal
* PS3 signal
* PT25 sensor
* Pitot probe heat off
* Start lever
* Start switch
* T12 sensor
* T3 sensor
* T49.5 sensors
* Transient bleed valve (TBV)
* Thrust lever angle resolver (TLR)
* Thrust reverser interlock solenoid
* Thrust reverser position signals
* Variable bleed valve (VBV)
* Variable stator vanes (VSVs).
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
EFFECTIVITY
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
EFFECTIVITY
GUN 201-999 PRE SB CFM56-7B 73-44 73-21-00
Page 78
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
73-21-00-197
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
EFFECTIVITY
GUN 001-099, 101-115 POST SB CFM56-7B 73-44 73-21-00
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D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
73-21-00-197
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE - SIGNALS
EFFECTIVITY
GUN 201-999 POST SB CFM56-7B 73-44 73-21-00
Page 80
D633A101-GUN Oct 10/2005
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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Fault Information
When EEC BITE finds faults, they are stored in BITE memory.
The faults have these 5 dispatch levels:
* ENGINE CONTROL LIGHT
* ALTERNATE MODE LIGHT
* SHORT TIME
* LONG TIME
* ECONOMIC.
The EEC stores faults in memory by dispatch level. The EEC
stores up to 10 of each dispatch level for 10 flight legs. The faults
are erased when they are 11 flight legs old. If there are 10 faults
stored in one dispatch level and a new fault in that dispatch
level occurs, the EEC erases the oldest fault and records the
new fault.
Faults that occur on the ground are stored in flight leg 0. When
the airplane takes off, the faults from the last ground run go into
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