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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
KEY SHUTOFF SYSTEM (ETR solenoid
type)
ELECTRICAL SYSTEM
130 / 195
ELECTRICAL SYSTEM
32 KEY SHUTOFF SYSTEM
(ETR solenoid type)
32.1 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 pull-in coil of the solenoid is energized for three
seconds, pulling the push rod inward.
During operation with the starter switch at the “ON”
position, the hold-in coil of the solenoid remains
energized, keeping the push rod in the retracted
position.
Like the conventional energize-to-stop (ETS) solenoid
engine shutdown system, this system is a safety device
designed to bring the injection pump into the no-
injection state whenever the wiring is open or the
starter switch is turned to the “OFF” position.
32.2 Cord color (standard)
The wires of the solenoid are identified by color as
follows:
3
1
2
Red
White
Blue
Stroke 13 ± 0.5 mm
(0.51 ± 0.02 in.)
No. Color Remarks/Connection
1 Red PULL (pull-in coil)/starter
2 White HOLD (hold-in coil)/starter switch
3 Blue COM (earth)/ground
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