P0016

DTC P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
DTC P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)

DESCRIPTION

DTC Detection Condition:

The Crankshaft Position (CKP) sensor system consists of a CKP sensor plate and a magnetic coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of windings, an iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 34 signals for each engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and ignition timing are controlled.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM optimizes the valve timing using the Variable Valve Timing (VVT) system to control the intake valve camshaft. The VVT system includes the ECM, the OCV and the VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal, applied to the OCV, regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake valve camshaft. The ECM calibrates the valve timing of the VVT system by setting the camshaft to the maximum retard angle when the engine is idling. The ECM closes the OCV to retard the cam. The ECM stores this value as VVT learned value. When the difference between the target valve timing and the actual valve timing is more than 5°Crankshaft Angle (CA), the ECM learns it.

If the learned value meets both of the following conditions (a) and (b), the ECM interprets this as a defect in the VVT system and sets a DTC.

a. VVT learning value is less than 22.5 °CA or more than 44 °CA.
b. condition continues for 18 seconds or more.

This DTC shows that the camshaft was installed toward the crankshaft at an incorrect angle (for example: jumped tooth of timing belt).

This monitor runs after the engine is idling for 5 minutes.

Wiring Diagram:

Step 1-2:

Step 2(Continued):

INSPECTION PROCEDURE

HINT: Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.