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| Illustration 1 | g01428006 |
Engine stop circuit | |
The components of the engine stop circuit are the key start switch, the main power 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 | g03689397 |
(1) Key start switch (2) OFF position | |
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| Illustration 3 | g01263017 |
Main power relay magnetic switch (behind cover) | |
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| Illustration 4 | g01428007 |
(3) Main power relay magnetic switch | |
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| Illustration 5 | g01262735 |
Left side view of engine (4) Engine ECM | |
When key start switch (1) is turned to OFF position (2), the power that energizes main power relay magnetic switch (3) is interrupted. The power to Engine ECM (4) will also be interrupted, causing the engine to shut down.
ReferenceFor more information on engine shutdown systems, refer to Systems Operation, Testing and Adjusting, "Engine Monitoring, Engine Shutdown, and Idle/Timer Fire Suppression Control".