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Home >> Isuzu >> 1985 >> I-Mark L4-1.8L 4FBI DSL >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Relays and Modules - Emission Control Systems >> EGR Control Module >> Description and Operation
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EGR Control Module: Description and Operation


The EGR controller sends electrical signals to the vacuum switching valve after it receives information on coolant temperature, engine speed and injection pump control lever opening angle from the thermo switch, engine speed sensor and control lever position sensor respectively. The speed sensor is an electromagnetic pickup that transforms the movement of gear teeth in the injection pump into an electrical signal. The control lever position sensor is a potentiometer that varies resistance values according to changes in control lever position.



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