The Crankshaft Position Sensor (CKPS) is a magnetic field sensitive type sensor that generates voltage using a sensor and a target wheel mounted on the crankshaft; there are 58 slots in the target wheel where one is longer than the others. During one crankshaft rotation there are 58 rectangular signals and one longer signal. The ECM calculates engine RPM by using the sensor’s signal and controls the injection duration and the ignition timing. Using the signal differences caused by the longer slot, the ECM identifies which cylinder is at top dead center.
Checking tooth error correction under detecting condition, if the TEC(Tooth Error Correction) is out of Threshold value, PCM sets P0315.
Item | Detecting Condition | Possible cause | |||||
DTC Strategy | ● This DTC indicates that crankwheel tooth errorhas not been learned. | ● loosened CKPS ● Target wheel ● PCM | |||||
Enable Conditions | ● 10% ≤ Engine load ＜ 90% ● 2000 rpm ≤ engine speed ≤ 4000 rpm ● TEC(Tooth Error Correction) RPM stability timer＞ 10sec ● 0℃(32°F) ＜ coolant temperature ＜ 110℃(230°F) ● Not active disabling faults | ||||||
Threshold value | ● Distance driven without learning(during fuel cut off) tooth error ≥ 6500km(4038.91275 mile) ● Acutal Value is higher or lower than calibrated value | ||||||
Diagnosis Time | ● Continuous | ||||||
MIL On Condition | ● DTC only | ||||||
Check DTC Status
Connect scantool to Data Link Connector(DLC).
IG "ON".
Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F4(DTAL) to check DTC's
Read "DTC Status" parameter.
Is parameter displayed "Present fault"?
▶ Go to "Component Inspection" procedure.
▶ Fault is intermittent caused by PCM memory was not cleared after repair. Erase DTC and drive the vehicle to satisfy the enable codition then,go to " Component Inspection" procedure.
Visually check CKPS and target wheel
IG "OFF"
Visually check CKPS is loosened or target wheel is deformed or damaged.
Is the above items normal ?
▶ Substitute with a known - good PCM and check for proper operation.
▶ If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.
▶ Repair or replace as necessary and then go to"Verification of Vehicle Repair" procedure.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
Press F4(DTAL) and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions
Read "DTC Status" parameter
Is parameter displayed "History(Not Present) fault"?
▶ System performing to specification at this time. Clear the DTC.
▶ Go to the applicable troubleshooting procedure.
