Diagnostic Instructions
DTC Descriptors
DTC P0016: Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation
DTC P0017: Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation
Circuit/System Description
The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The CMP actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the
CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator solenoid controls the oil flow that applies the pressure to advance or retard the
camshafts.
Ignition voltage is supplied directly to the CMP actuator solenoid. The ECM controls the solenoid by grounding the control circuit with a solid state device called a driver. The ECM compares the camshaft position or the camshaft angle, to the position
of the crankshaft.
Conditions for Running the DTC
| • | DTC P0011, P0012, P0014, P0015, P0026, P0027, P0076, P0077, P0079, P0080, P0335, P0336, or P0340 is not set. |
| • | The DTCs run continuously once the above conditions are met. |
Conditions for Setting the DTC
P0016
The ECM detects that offset ratio between camshaft and crankshaft is greater than 0.3616 or less than 0.2616.
P0017
The ECM detects that offset ratio between camshaft and crankshaft is greater than 0.1102 or less than 0.0102.
Action Taken When the DTC Sets
DTCs P0016 and P0017 are type B DTCs.
Conditions for Clearing the DTC
DTCs P0016 and P0017 are type B DTCs.
Diagnostic Aids
| • | Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, camshaft sensor, crankshaft sensor, or timing belt can cause this DTC to set. |
| • | An actuator that is in the full advance or retard position can cause this DTC to set. |
| • | Observing the desired and actual camshaft angle parameters, with a scan tool before a DTC sets, may help to isolate whether a condition is specific to one camshaft, one bank, or caused by a condition with the primary crankshaft timing. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Electronic Ignition (EI) System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
Circuit/System Testing
- Engine running, observe the DTC information with a scan tool. DTCs P0016 and P0017 should not set.
| ⇒ | If a DTC sets, inspect for the following: |
| • | The correct installation of the camshaft sensors |
| • | The correct installation of the crankshaft sensor |
| • | A timing belt tensioner condition |
| • | An incorrectly installed timing belt |
| • | Excessive play in the timing belt |
- Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
