Section07ELECTRICALSYSTEM
Subsection 03 (STARTING SYSTEM)
GENERAL
Causes of troubles are not necessarily related to
starter but may be due to a burnt fuse, faulty bat-
tery, bad grounds, start/stop switch, DESS switch,
solenoid, electrical cables or connections, MPEM
or ECM/VCM (RFI engines).
Check these components before removing starter.
Consult also the starting system troubleshooting
chart for a general view of possible problems.
WARNING
Short circuit electric starter is always a dan-
ger, therefore disconnect the battery ground
cable before carrying out any kind of mainte-
nance on starting system. Do not place tools
on battery.
If no beep is heard when installing the safety lan-
yard and gauges are not powered, check the fol-
lowing:
– battery voltage/connections (refer to CHARG-
ING SYSTEM)
–fuses
– Power supply cut-off relay (717 engine)
– grounds
– safety lanyard
– DESS switch
– MPEM (717 engine)
– ECM (787 RFI engine)
If other than 2 beeps are heard when installing the
safety lanyard, refer to DESS section.
Tool
For best electrical measurement results, use the
multimeter Fluke 111 (P/N 529 035 868).
529 035 868
TESTING PROCEDURES
Fuse
Make sure the following fuse(s) is (are) in good
condition.
717 Engine
Fuse on the power supply cut-off relay.
smr2005-059-006_a
TYPICAL
1. Fuse holder
Step 1: Pull tab
Step 2: Pull fuse housing
787 RFI Engine
Main fuse.
186 smr2005-059
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