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Home >> Jeep >> 1986 >> Cherokee Base, 2D Utility, 2.5 H, 4WD, Standard, AX5 >> Repair and Diagnosis >> Engine Performance >> System >> 2.5L TBI System >> Operation >> Ignition Advance Control
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Ignition Advance Control

Under certain engine operating conditions, the predetermined ignition advance curve is modified. This is accomplished through 2 switching circuits that connect the ECU and the ignition control module.