Cruze

DTC P0340, P0341, P0365, or P0366

The camshaft position sensor - intake and camshaft position sensor - exhaust circuits consist of a 5 V reference circuit, a low reference circuit and the signal circuit. The engine control module (ECM) supplies the 5 V reference circuit and low reference, and uses the signal as an input. The camshaft position sensor - intake and camshaft position sensor - exhaust sensor is an internal magnetically biased sensing device. A tooth reluctor wheel is attached to the camshaft. When a reluctor wheel tooth passes the camshaft position sensor -- intake and camshaft position sensor - exhaust sensor, the resulting change in the magnetic field is used by the camshaft position sensor - intake and camshaft position sensor - exhaust sensor electronics to produce a digital output pulse. The camshaft position sensor - intake and camshaft position sensor - exhaust sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with varying output pulse widths per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the camshaft position sensor - intake and camshaft position sensor - exhaust sensor output depends on the velocity of the camshaft. The engine control module decodes the narrow and wide tooth pattern to identify the camshaft position. This information is used to determine the optimal ignition and injection timing. The engine control module also uses the camshaft position sensor signal to determine the camshaft relative position to the crankshaft to control camshaft phasing and for limp home operation.

The following conditions can also set the DTC:

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for diagnostic tester information

1. Ignition OFF, inspect the engine wiring harness carrying the B23F Camshaft Position Sensor - Intake and B23E Camshaft Position Sensor - Exhaust sensor circuits for the following conditions:

•	Close routing of aftermarket electrical equipment

•	Close to solenoids, motors, and relays

•	If any of these are determined to be a possible source of electrical interference, correct any wiring harness routing or component placement conditions.

2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Ignition OFF, disconnect the harness connector at the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake.
2. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

⇒	If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition On, test for 4.8-5.2 V between the signal circuit terminal 3 and ground.

⇒	If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

5. If all circuits test normal, test or replace the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake.

Static Test

1. Inspect the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake. for looseness, damage and correct installation.

⇒	If the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake is loose, incorrectly installed or damaged, repair or replace the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake.

2. Connect the connector to the B23E Camshaft Position Sensor - Exhaust or B23F Camshaft Position Sensor - Intake.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.