Circuit Description

Crankshaft position sensor is a pick-up coil located on front of engine, near crankshaft pulley and uses a 34-tooth signal plate located on the crankshaft. ECM uses input signals from crankshaft position sensor to determine crankshaft angle and engine speed. DTC P0335 is set when ECM does not receive input signal from crankshaft position sensor when engine is cranking or with engine speed more than 600 RPM. DTC P1335 is set when ECM does not receive input signal from crankshaft position sensor when engine is running. Possible causes are:

• Crankshaft position sensor circuit is open or shorted.
• Defective crankshaft position sensor.
• Defective signal plate.
• Defective ECM.