P0365
DTC P0340 or P0365 (LUW)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0340
- Intake Camshaft Position Sensor Circuit
DTC P0365
- Exhaust Camshaft Position Sensor Circuit
Diagnostic Fault Information
Circuit/System Description
The camshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference circuit, low reference circuit, and an output signal circuit. The camshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes of the teeth and slots of a reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the camshaft position sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with varying width output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the camshaft position sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses camshaft position sensor output information to determine the camshaft relative position to the crankshaft, to control camshaft phasing, and for limp-home operation.
Conditions for Running the DTC
P0340 and P0365 - Engine Cranking Camshaft Test
* DTCs P0101, P0102, and P0103 are not set
* The engine air flow is greater than 3.00 g/s.
* The starter is engaged.
* The DTC runs continuously when the above conditions are met for greater than 0.1 s.
P0340 and P0365 - Time Based Camshaft Test
* DTC P0641 is not set.
* The engine is running.
* The starter is not engaged.
* The DTC runs continuously when the above conditions are met for greater than 0.1 s.
P0340 and P0365 - Fast Event Based Camshaft Test
* DTCs P0335, P0336, P0641, and P0651 are not set.
* The crankshaft is synchronized.
* The starter is engaged.
* The DTC runs continuously every medium resolution event when the above conditions are met.
P0340 and P0365 - Slow Event Based Camshaft Test
* DTCs P0335, P0336, P0641, and P0651 are not set.
* The crankshaft is synchronized.
* The DTC runs continuously every engine cycle when the above conditions are met.
Conditions for Setting the DTC
P0340 and P0365 - Engine Cranking Camshaft Test
The ECM does not receive camshaft pulses for greater than 5.5 s.
or
The ECM does not receive camshaft pulses at engine start for greater than 4 s.
P0340 and P0365 - Time Based Camshaft Test
The ECM does not receive 4 camshaft pulses for greater than 3 s.
P0340 and P0365 - Fast Event Based Camshaft Test
The ECM does not receive camshaft pulses during the first 12 medium resolution events.
P0340 and P0365 - Slow Event Based Camshaft Test
The ECM does not receive any camshaft pulse during 100 engine cycles.
Action Taken When the DTC Sets
DTCs P0340 and P0365 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0340 and P0365 are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
Camshaft Actuator System Description Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Engine idling, observe the scan tool Intake Camshaft Position Active Counter or the Exhaust Camshaft Position Active Counter parameter. The parameters should be incrementing.
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.
Circuit/System Testing
1. Ignition OFF, disconnect the appropriate harness connector at the B23 Camshaft Position Sensor.
2. Ignition OFF, all vehicles systems OFF. It may take up to 2 min for all vehicle systems to power down. Test for less than 5 ohms 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.
Component Testing
Static Test
1. Ignition OFF, remove the B23 Camshaft Position Sensor from the engine.
2. Connect the connector to the B23 Camshaft Position Sensor.
3. Ignition ON, and engine OFF. Observe the scan tool Intake Camshaft Position Active Counter or the Exhaust Camshaft Position Active Counter parameter. Pass a steel object by the tip of the sensor repeatedly. The parameter should increment.
• If the parameter does not increment, replace the B23 Camshaft Position Sensor.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Camshaft Position Sensor Replacement Service and Repair
* Control Module References Control Module References for Engine Control Module replacement, programming, and setup.