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Home >> Cadillac >> 1996 >> Seville SLS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P1320 - Ignition Control (Ic) Module 4X Reference Circuit Intermittent No Pulse >> Diagnostic Aids
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Diagnostic Aids

DTC may set due to a false start condition in which cranking speed exceeds 568 RPM with engine not starting. If no fault is present, check for intermittent open or short in IC module fuel control circuit, ignition feed circuit or ground circuit. Also, check for EMI interference on IC module fuel control circuit.