LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 1997 >> Eldorado Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Engine Control System - Tests W/Codes) >> Diagnostic Trouble Codes >> DTC P1323 - Ignition Control (Ic) Module 24X Reference Circuit Low Frequency >> Circuit Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Description

WARNING: This page is about a different car, the 1998 Cadillac Seville, 1998 Cadillac Eldorado, and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

IC module creates a 4X signal and a 24X signal that is used by the PCM for ignition and fuel control. In this test, PCM checks for 4X reference pulses being received without 24X reference pulses. When engine is running and PCM is receiving 4X pulses without 24X reference pulses and the 24X reference signal line is low for 4 seconds, DTC will set.

scientia non olet · About LEMON Manuals