P0336
DTC P0336
CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor is a 24X sensor. The CKP sensor provides 24 digital ON/OFF signals to the powertrain control module (PCM) per revolution of the crankshaft. This information is used by the PCM for ignition timing, fuel injector timing, misfire diagnostics, and tachometer display. The PCM supplies 12 volts to the sensor on the 12-volt reference circuit and provides a ground on the low reference circuit. The CKP sensor provides signals to the PCM on the medium resolution engine speed signal circuit. The PCM monitors the CKP sensor for errors. If the PCM receives an inconsistent signal form the CKP sensor, DTC P0336 sets.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0336 Crankshaft Position (CKP) Sensor Performance
CONDITIONS FOR RUNNING THE DTC
- The engine is cranking or running.
- This diagnostic runs continuously once the above conditions are met.
CONDITIONS FOR SETTING THE DTC
- The PCM detects that more or less than 48 CKP sensor pulses have occurred for every one camshaft position (CMP) sensor pulse.
- This conditions exists for more than 2 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.
TEST
