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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
ENGLISH
ETR type stop solenoid ELECTRICAL SYSTEM
ELECTRICAL SYSTEM
29 ETR type stop solenoid
29.1 General
The energize-to-run (ETR) solenoid controlled engine
shutdown system operates as follows:
When the starter switch is turned to the "ON" position,
the hold coil and the pull coil are energized
simultaneously, pulling the stop lever to the "RUN"
position. However, the pull coils is energized only for
about 1 second (maximum 3 seconds) by a special
controller.
The hold coil of the solenoid remains energized in both
the "ON" and "START" position of the starter switch,
keeping the stop lever in the "RUN" position. When the
current to the hold coil is interrupted, the hold coil is no
longer energized causing that the stop lever
immediately will be pushed to the no-injection position
by the internal return spring force of the solenoid. The
engine then stops.
This system is a safety device designed to stop the
engine whenever the wiring is open or when the starter
switch is turned "OFF".
Figure 205
Idle
Connector P/N 30A87-01600
(Counter-Connector P/N 30A87-00600)
Stop
Spring clip
Full
Run
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