General Information

Component Location





General Description

It is impossible to forge or machine a perfectly proportioned crankshaft wheel. Therefore, each crankshaft wheel produced will have minor variations in the spacing and/or width of its gear teeth. These variations (tooth error), if not compensated for, can cause false misfire detection.
The Tooth Error Correction (TEC) Learn Algorithm determines engine-specific variation in crankshaft position sensing. Once TEC is learned, compensation factors are then calculated and used by the Misfire Diagnostic algorithm to improve the accuracy of engine position determinations.Tooth error correction factors are normally learned only once during the life of a vehicle. However, if a vehicle controller, engine crankshaft, target wheel, or crank sensor is replaced or serviced, tooth error correction factors must be re-learned. This can be performed in a service environment with serial data commands.

DTC Description

Checking tooth error correction under detecting condition, if the TEC is out of Threshold value, PCM sets P0315.

DTC Detecting Condition





Schematic Diagram