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Home >> Jeep >> 1988 >> Cherokee Limited, 4D Utility >> Repair and Diagnosis >> Engine Performance >> System >> 4.0L CEC System >> Operation >> Data Sensors & Switches >> Notes

Data Sensors & Switches: Notes

Each sensor and/or switch furnishes electronic impulses to the ECM. Based on these input signals, the ECM computes spark timing and air/fuel mixture for proper engine operation.