KIT-SPACE HEATER 4P5639 - Caterpillar

Illustration 1 g03415244
Engine stop circuitThe components of the engine stop circuit are the: key start switch, keypad 1, main power relay, Power Train Electronic Control Module (ECM) and Engine ECM.
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Dash panel (1) Key start switch (2) OFF position
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Cab (below rear arm rest) (3) Main power relay
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Right side view of engine (4) Engine ECM
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Cab (5) Power Train ECMWhen key start switch (1) is turned to OFF position (2), the power that energizes main power relay (3) is interrupted. Power Train ECM (5) will send a stop signal to Engine ECM (4) via Cat Data Link. Engine ECM (4) will signal the engine to shut down.