P0335
DTC P0335CIRCUIT DESCRIPTION
The hall effect crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. There are 57 teeth on the front of the crankshaft sprocket, plus a sync gap. The CKP sensor will output an ON-OFF pulse as each window passes the sensing element. The CKP sensor is connected directly to the engine control module (ECM) by the following circuits:
- The 12-volt reference circuit
- The low reference circuit
- The CKP sensor signal circuit
CONDITIONS FOR RUNNING THE DTC
- The engine is cranking or running.
- The camshaft position (CMP) sensor signal is present.
CONDITIONS FOR SETTING THE DTC
The engine control module (ECM) determines no signal from the CKP sensor for less than 8 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails-The control module stores this information in the Freeze Frame/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
Steps 1-2:
Steps 3-6:
Steps 7-12:
Step 13:
