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Home >> GMC >> 1997 >> Forward Control 7.4 J >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 7.4L (P Series) >> Diagnostic Trouble Codes >> DTC P0340 - Camshaft Position Sensor Circuit >> Circuit Description

Circuit Description

Camshaft Position (CMP) sensor is used to indicate camshaft position so that VCM can determine which cylinder is misfiring when misfire is present. Sensor also checks if high voltage switch is properly installed.

DTC will set when the following conditions are present: