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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine General Information & Diagnosis) >> H25 Engine >> Diagnostic Information & Procedures >> DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Misfire Detected >> System Description

System Description

WARNING: This page is about a different car, the 2004 Suzuki XL-7 and 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

ECM (PCM) measure the angle of the crankshaft based on the pulse signal from the CKP sensor and CMP sensor for each cylinder. If it detects a large change in the angle speed of the crankshaft, it concludes occurrence of a misfire. When the number of misfire is counted by ECM (PCM) beyond the DTC detecting condition, it determine the cylinder where the misfire occurred and output it as DTC.

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