P0336

CIRCUIT DESCRIPTION
The Crankshaft Position (CKP) sensor sends a reference signal to the Vehicle Control Module (VCM) in order to indicate the crankshaft position and the RPM so that the VCM can determine when to pulse the ignition coil, the fuel injectors, and the control ignition timing. This is a type D DTC.

CONDITIONS FOR SETTING THE DTC
The following conditions will set the DTC:

^ The Crankshaft Position sensor signal is missing for at least 0.5 seconds.
^ The engine cranking and the VCM receives 4 or more CAM Shaft Position signals without a Crankshaft Position sensor signal.

ACTION TAKEN WHEN THE DTC SETS
The VCM stores the DTC to the history if the VCM detects an intermittent problem.

CONDITIONS FOR CLEARING THE MIL/DTC
A history DTC will clear if no fault conditions have been detected for 40 warm-up cycles (coolant temperature has risen 40°F from the start-up coolant temperature and the engine coolant temperature exceeds 160°F during that same ignition cycle) or the scan tool clearing feature has been used.

DIAGNOSTIC AIDS
A poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation may cause an intermittent.

Thoroughly check any circuitry, that is suspected as causing the intermittent complaint, for the following conditions:

^ Backed out terminals.
^ Improper mating.
^ Broken locks.
^ Improperly formed or damaged terminals.
^ Poor terminal to wiring connections.
OR
^ Physical damage to the wiring harness.

Refer to Intermittents.

Refer to Carbon Particle Removal from Evaporative Emissions (EVAP) System before starting repairs.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.

2. This step determines if the VCM is receiving the Crankshaft Position sensor pulses.
3. This step checks the ignition feed circuit to the Crankshaft Position sensor.
4. This step checks the Crankshaft Position sensor low circuit.
5. This step checks the Crankshaft Position Sensor.