P0336

CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor is connected directly to the ignition control (IC) module. The CKP sensor consists of the following circuits:
^ The 12-volt reference circuit
^ The low reference circuit
^ The CKP sensor 1 signal circuit
^ The CKP sensor 2 signal circuit

The CKP sensor shares power supply. and low reference circuits with the camshaft position (CMP) sensor.

CONDITIONS FOR RUNNING THE DTC
The engine is running, and the 3X reference pulses are being received.

CONDITIONS FOR SETTING THE DTC
No 18X reference pulses are received in one engine cycle, 720 degrees of crankshaft rotation.

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
Inspect for the following conditions:
^ Incorrect harness routing near secondary ignition components.
^ Faulty ignition coil-Remove the ignition coils and inspect the ignition control module and coils for cracks, for carbon tracking, or for other signs that indicate that the coil secondary circuit is arcing to the ICM or ICM wiring harness. Refer to Ignition Coil(s) Replacement.
^ Secondary ignition wires arcing to wiring harness-Inspect the secondary ignition wires for carbon tracking or for other signs of damage.
^ Poor Connections-Refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.

TEST DESCRIPTION

Steps 1-3:

Steps 4-13:

The number below refers to the step number on the diagnostic table.
11. This vehicle is equipped with a PCM which utilizes an electrically erasable programmable read only memory (EEPROM). When the PCM is replaced, the new PCM must be programmed.