P0335

CIRCUIT DESCRIPTION
The powertrain control module (PCM) uses the crankshaft position (CKP) sensor to detect crankshaft speed and position. The CKP sensor connects to the PCM through the following circuits:
- The 12-volt reference circuit
- The low reference circuit
- The CKP sensor 1 signal circuit

If the PCM detects no signal from the CKP sensor for more than 3 seconds, DTC P0335 sets.

CONDITIONS FOR RUNNING THE DTC
- DTCs P0101, P0102, P0103, P0341 are not set.
- The camshaft position (CMP) sensor is incrementing.
- The mass air flow (MAF) is more than 3 g/s while the engine is cranking.
- The MAF is more than 5 g/s while the engine is running.

CONDITIONS FOR SETTING THE DTC
The PCM detects no signal from the CKP sensor for more than 3 seconds.

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.

DIAGNOSTIC AIDS
The following conditions may cause this DTC to set:
- Crankshaft reluctor wheel damage or improper installation
- Excessive air gap between the CKP sensor and the reluctor wheel
- Foreign material passing between the sensor and the reluctor wheel

Excess crankshaft end play causes the CKP sensor reluctor wheel to move out of alignment with the CKP sensor. This could result in any one of the following:
- A no start
- A start and stall
- Erratic performance

For an intermittent, refer to Intermittent Conditions. Intermittent Conditions

TEST

Steps 1-3:

Steps 4-6:

Steps 7-10:

Steps 11-15:

Steps 16-17: