Detection Condition

WARNING: This page is about a different car, the 2003 Mazda B4000, 2003 Mazda B3000, and 2003 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0351-P0353 indicate PCM did not receive a valid Ignition Diagnostic Monitor (IDM) pulse signal which indicates primary side of coil has failed from ignition module (integrated in PCM). This is caused by an ignition coil failure. DTC number indicates matched cylinder pairs. Coil packs are in a tower configuration with 2 adjacent coil towers sharing a common coil (called a matched pair). For 4-cylinder applications, matched cylinder pairs are 1 and 4 or 2 and 3. For V6 applications matched cylinder pairs are 1 and 5, 2 and 6 or cylinders 3 and 4. When ignition coil is fired by PCM, spark is delivered to a matched pair of towers, then onto the respective (paired cylinder) spark plugs. Spark plugs are fired simultaneously and are paired so one fires on the compression stroke, while the other spark plug fires on the exhaust stroke. On the subsequent firing of ignition coil, paired cylinder spark plugs will fire on opposite piston strokes.