P0335

Wiring Diagram:

CKP Sensor Circuit:

P0335 - CKP SENSOR CIRCUIT
The crankshaft position (CKP) sensor produces an AC voltage of different amplitude and frequency depending on the velocity of the crankshaft. The CKP sensor works in conjunction with a 58 tooth reluctor wheel on the crankshaft. Each tooth is spaced 6 degrees apart. with one span having a 12 degree space that is uncut. This uncut portion creates a pattern that enables the ECM to determine top dead center for cylinder #1 and its mating cylinder, cylinder #4. The camshaft position (CMP) sensor then used to determine when cylinder #1 is on its compression stroke. With both CKP sensor and CMP sensor inputs the ECM can properly synchronize ignition timing, fuel delivery and spark knock control DTC P0335 sets when the ECM does not receive a CKP sensor signal after a certain number of CMP sensor signal pulses have been received.

DTC PARAMETERS
DTC P0335 will set it the ECM does NOT receive a CKP signal during which 8 valid CMP sensor signal pulses have been received when:
^ CMP sensor signal pulses are greater than 25 rpm (camshaft is spinning greater than 25 rpm/engine speed is greater than 50 rpm)

DTC P0335 diagnostic runs continuously with engine running or cranking.

P0335 is a type B DTC

DIAGNOSTIC AIDS
The engine will NOT run it the ECM does not receive a CKP sensor signal regardless it a valid CMP sensor signal is received

If the engine is running, this DTC is NOT active. If the engine does not start, use Scan tool to monitor ENGINE SPEED while cranking over engine. Wiggling wires while checking for ENGINE SPEED may locate the area where an open, short to ground or short to voltage in the wiring may exist.

NOTE: If this DTC is intermittent. allow engine to reach normal operating temperature while checking for an engine stall condition. The CKP sensor may have an intermittent open or high resistance at higher temperatures.

CKP sensor resistance: 800-1200 ohms