P0341

Schematic:

CIRCUIT DESCRIPTION
The Camshaft Position (CMP) sensor works in conjunction with a single tooth reluctor wheel on the bank 2 intake camshaft. The Engine Control Module (ECM)pulls up the CMP sensor signal circuit to 5 voltsand monitors this voltage. As the reluctor wheel tooth rotates past the sensor, the sensors internal circuitry pulls the signal circuit to ground, creating a square wave signal that is used by the ECM. The reluctor wheel tooth covers 180 degreesof the camshaft circumference. This causes the CMP signal voltage to transition once per crankshaft revolution. This signal, when combined with the Crankshaft Position (CKP) sensor signal, enables the ECM to determine exactly which cylinder is on a firing stroke. The ECM can then properly synchronize the ignition system, the fuel injectors, and the knock control. Note: that as long as the CKP signal is available, the engine can start and run, even if there is no CMP sensor signal the ECM will default to a non-sequential fuel injector operation.

CONDITIONS FOR RUNNING THE DTC
Engine running

CONDITIONS FOR SETTING THE DTC
The CMP signal is not rational.

ACTION TAKEN WHEN THE DTC SETS
The ECM illuminates the Malfunction Indicator Lamp (MIL) and records the operating conditions in the Freeze Frame on the second consecutive drive trip that the diagnostic runs and fails.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The ECM turns OFF the MIL after 3 consecutive drive trips that the diagnostic runs and passes.
^ A History DTC clears after forty consecutive warm-up cycles in which no failures are reported by this diagnostic or any other emissions related diagnostic.
^ The scan tool clears the MIL/DTC.

DIAGNOSTIC AIDS
Use the J 35616-A connector test adapter kit for any test that requires probing the ECM harness connector or a component harness connector. Using this kit prevents damage to the harness or component terminals. Refer to Using Connector Test Adapters in Diagrams. For an intermittent, refer to Symptoms. Symptom Related Diagnostic Procedures

This DTC will set with an intermittent failure of the switched battery positive feed, the CMP sensor signal circuit, or the sensor ground. A hard failure of any one of these circuits should set DTC P0340.

Check for the following conditions:
^ Poor connections at the ECM or at the component-Inspect the harness connectors for any backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
^ A damaged harness-Inspect the wiring harness for any damage.

If a repair is necessary refer to Wiring Repairs or Connector Repairs in Diagrams.

TEST DESCRIPTION

Diagnostic Chart:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for an intermittent open or high resistance in the CMP sensor signal and ground circuits.
4. This step tests for an intermittent short between the CMP signal and ground circuits.
5. his step tests for an intermittent short to voltage or short to ground on the CMP signal circuit.