P0335

DTC P0335

CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor is a variable reluctance sensor. The CKP sensor indicates the crankshaft speed and position. The CKP sensor produces an AC voltage of different amplitude and frequency. The frequency depends on the velocity of the crankshaft. The AC voltage output depends on the crankshaft position and the battery voltage. The CKP sensor works in conjunction with a 58 tooth reluctor wheel on the crankshaft. The CKP sensor connects to the engine control module (ECM) through the following circuits:
- A CKP sensor signal
- A low reference
- A ground

If the ECM detects no signal from the CKP sensor, DTC P0335 sets.

CONDITIONS FOR RUNNING THE DTC
- DTCs P0341, P0342, P0343 are not set.
- The engine is cranking or running.

CONDITIONS FOR SETTING THE DTC
The ECM has detected no CKP sensor pulses.

ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.

TEST DESCRIPTION

Steps 1-10:

Steps 11-20:

Steps 21-24:

The numbers below refer to the step numbers on the diagnostic table.
4. This step tests for an internally shorted CKP sensor.
5. This step tests for a short to voltage in the battery circuit.
6. This step tests for a short to voltage in the battery circuit.
7. This step tests for a short to voltage in the ignition circuit.
8. This step tests for a short to voltage in the ignition circuit.