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| Illustration 1 | g01046579 |
Engine stop circuit | |
The components of the engine stop circuit are the key start switch, the main relay magnetic switch, the Power Train Electronic Transmission Control (Power Train ECM), and the Engine Electronic Control Module (Engine ECM).
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| Illustration 2 | g01046580 |
Dash panel (1) Key start switch (2) OFF position | |
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| Illustration 3 | g01046582 |
Side view of cab (3) Main relay magnetic switch | |
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| Illustration 4 | g01046583 |
Left side view of engine (4) Engine ECM | |
When key start switch (1) is turned to OFF position (2), the power that energizes main relay magnetic switch (3) is interrupted. The power to Engine ECM (4) will also be interrupted, causing the engine to shutdown.
Reference: For more information on engine shutdown systems, refer to Systems Operation, Testing and Adjusting, "Engine Monitoring, Engine shutdown switch and Idle/Timer Fire Suppression Control" for the machine that is being serviced.