For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Engine 🢒 Engine Controls - 3.0L 🢒 Electronic Ignition (EI) System Diagnosis

Electronic Ignition (EI) System Diagnosis for Cadillac Catera 1999

Always start the diagnosis with the Powertrain On-Board Diagnostic (OBD) system check. This will reduce the diagnostic time and prevent unnecessary parts replacement. For additional information, refer to the following procedures:

•	Engine Cranks but Does Not Run

•	Ignition System Check

•	DTC P0300 Engine Misfire Detected

•	DTC P0301 Cylinder 1 Misfire Detected

•	DTC P0302 Cylinder 2 Misfire Detected

•	DTC P0303 Cylinder 3 Misfire Detected

•	DTC P0304 Cylinder 4 Misfire Detected

•	DTC P0305 Cylinder 5 Misfire Detected

•	DTC P0306 Cylinder 6 Misfire Detected