2010 Cadillac CTS Sedan AWD V6-3.6L Page 1350
* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (See: Powertrain Management/Computers and Control
Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake)
* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust (See: Powertrain Management/Computers and Control
Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust)
* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake (See: Powertrain Management/Computers and Control
Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
P0345
DTC P0340, P0345, P0365, or P0390 (w/LF1)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0340
- Intake Camshaft Position Sensor Circuit Bank 1
DTC P0345
- Intake Camshaft Position Sensor Circuit Bank 2
DTC P0365
- Exhaust Camshaft Position Sensor Circuit Bank 1
DTC P0390
- Exhaust Camshaft Position Sensor Circuit Bank 2
Diagnostic Fault Information
Circuit/System Description
The 4X 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 4-tooth 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 4 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
Note: The ECM detects engine movement by sensing the airflow through the MAF sensor when airflow is greater than 3 g/s, or by sensing
crankshaft position sensor pulses.
* DTC P0102, P0103, P0335, P0336, P0641, P0651, or P0697 is not set.
* The engine is cranking or running.
* The DTC runs continuously when the above conditions are met.
Conditions for Setting the DTC
* The ECM detects that the starter is commanded ON and the engine has been cranking for more than 4 seconds without a camshaft position
