(c) For the applicable engine, open the fan cowl panels (Open the Fan Cowl Panels,
TASK 71-11-02-010-801-F00).
(d) Disconnect EEC connector, DP0303.
(e) With a digital/analog multimeter, COM-1793, make sure there is continuity between pins
W and r on the airplane side of connector DP0303 with the start switch in these positions:
NOTE: There should be no continuity with the start switch in the OFF or AUTO position.
1) GND
2) CONT
3) FLT.
(f) Connect EEC Connector DP0303.
(g) For engine 1, remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-2
Row Col Number Name
A 1 C00458 ENGINE 1 IGNITION RIGHT
A 3 C00153 ENGINE 1 IGNITION LEFT
A 4 C01390 ENGINE 1 ALTN PWR CHAN B
A 5 C01314 ENGINE 1 ALTN PWR CHAN A
(h) For engine 2, remove the safety tags and close these circuit breakers:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 4 C00459 ENGINE 2 IGNITION RIGHT
D 6 C00151 ENGINE 2 IGNITION LEFT
D 7 C01391 ENGINE 2 ALTN PWR CHAN B
D 8 C01315 ENGINE 2 ALTN PWR CHAN A
SUBTASK 80-11-00-860-005-F00
(6) Do this engine operation to examine the ARINC parameters of the applicable engine start
switch.
(a) Do this task: Supply Pressure to the Pneumatic System (Selection),
TASK 36-00-00-860-801.
(b) Start the applicable engine with the effected start switch (Start the Engine Procedure
(Normal Start), TASK 71-00-00-800-808-F00).
(c) Verify the start switch releases as the engine passes through 55 percent N2.
(d) Operate the engine at idle.
(e) Move the effected start switch to the CONT position for at least ten seconds.
(f) Move the effected start switch to the FLT position for at least ten seconds.
(g) Move the start switch to the OFF position.
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 533, 535, 537, 562; AIRPLANES WITH
AUTO-IGNITION
1) The AUTO position is off.
ILF ALL
(h) Do this task: Stop the Engine Procedure (Usual Engine Stop),
TASK 71-00-00-700-819-F00.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
CFM56 ENGINES (CFM56-7)
80-11-00
Page 504
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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