Diagnostic Instructions
DTC Descriptor
DTC P0016: Crankshaft Position (CKP) Camshaft Position (CMP)
Correlation
Circuit/System Description
The engine control module (ECM) uses the crankshaft position (CKP) sensor and
the camshaft position (CMP) sensor pulses to monitor the correlation between the crankshaft
and the camshaft position. The crankshaft reluctor wheel consists of a 60-tooth pattern
with 2 teeth missing for the reference gap. Each tooth is evenly spaced 6 degrees
apart, except for the reference gap. The camshaft reluctor wheel has 4 teeth,
2 narrow, and 2 wide. The 4 trailing edges of each tooth are evenly
spaced at 90 degrees apart around the circumference of the camshaft sprocket.
With the engine running, and the CMP actuator in the parked position, the ECM expects
the camshaft signal pulses to occur 36 crankshaft degrees before top dead center
(BTDC) for cylinder number 1, and every 90 degrees thereafter.
Conditions for Running the DTC
• | DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set. |
• | The engine speed is less than 1,200 RPM. |
• | The DTC runs continuously when the above conditions are met. |
Conditions for Setting the DTC
The cam signal falling edge is more than minus 11 degrees or more than
plus 14 degrees from the corresponding crank signal falling edge. This condition
is equal to the camshaft gear being either advanced or retarded by 1 tooth.
Action Taken When the DTC Sets
DTC P0016 is a Type B DTC.
Conditions for Clearing the DTC
DTC P0016 is a Type B DTC.
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 Verification
- Start the engine.
- Allow the engine to reach normal operating temperature.
- Allow the engine to idle.
- Observe the DTC information with a scan tool.
⇒ | If the scan tool indicates DTC P0016 has failed this ignition cycle,
continue with the Circuit/System Testing. |
- Operate the vehicle within the Conditions for Running the DTC. You may
also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure
Records data.
Circuit/System Testing
Important: You must perform the Circuit/System Verification
before proceeding with Circuit/System Testing.
- Inspect the engine front cover area, or review the service history of
the vehicle for any recent repairs involving the timing chain, timing chain tensioner,
camshaft, crankshaft, camshaft actuator, or sprockets.
- Remove the engine front cover, refer to
Engine Front Cover Replacement and inspect the timing chain, timing
chain tensioner, and sprockets for wear or damage. Refer to
Camshaft Timing Chain and Sprocket Cleaning and Inspection.
⇒ | If any components are worn or damaged, replace as necessary. |
Repair Instructions
Perform the
Diagnostic Repair Verificationafter completing the diagnostic procedure.
Camshaft Timing Chain and Sprocket Replacement