P1336

Schematic:

The Crankshaft Position (CKP) sensor produces an AC voltage of different amplitude and frequency depending on the velocity of the crankshaft. The crankshaft has 7 total machined notches, 6 of which are spaced 60° apart. The remaining tooth is 10° before the #4 cylinder TDC notch. This extra notch is used by the PCM to determine the position of the top dead center #4 cylinder necessary to synchronize engine position. The CKP sensor is then used for fuel delivery, spark timing and misfire diagnostics. The PCM must learn the notch variation of crankshaft teeth to perform misfire diagnostics correctly. The crankshaft relearn procedure can be performed on the Scan tool or SSS if no current/history misfire counts on any cylinder exist. DTC P1336 sets when the vehicle is driven above a calibrated vehicle speed and the crankshaft variation has not been learned.

DTC PARAMETERS
DTC P1336 will set if the crankshaft position variation has not been learned and vehicle speed is greater than 24 km/h (15 mph).

DTC P1336 diagnostic runs continuously when engine is running with crank learned set to NO.

DTC P1336 is a type A DTC

DIAGNOSTIC AIDS
If CRANK LEARNED is set to NO on Scan tool, perform CRANKSHAFT POS. VARIATION LEARN procedure. Component Tests and General Diagnostics

If any misfires are active, the PCM will not relearn the crankshaft for that ignition cycle. Diagnose and repair if a misfire exists.

Any misfire related DTCs will cause the PCM not to learn the crankshaft. These are listed in the DTC P0300 Diagnostic chart. Diagnose those DTCs first.

IMPORTANT: If a crankshaft or PCM has been replaced, the crankshaft MUST be relearned.