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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Controls - 3.6L - Diagnosis (DTC P0351 - P1014)) >> Diagnosis >> DTC P0351-P0356 >> Circuit Description

Circuit Description

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The ignition system on this engine uses individual ignition coils and ignition control (IC) circuits for each cylinder. The engine control module (ECM) controls the ignition system operation. The ECM controls each coil using the IC circuits. The ECM commands the IC circuit low when a spark event is requested. Each ignition coil is supplied the following circuits:

The sequencing and timing are ECM controlled. If the ECM detects the ignition control circuit is open, this DTC sets.