P0010

DTC Code	DTC Name
P0010	Camshaft Position "A" Actuator Circuit (Bank 1)

DESCRIPTION

The VVT-iE system adjusts the intake valve timing using a motor. Compared to conventional hydraulic VVT systems, the valve timing can be adjusted within a wider range and can be retarded more when starting the engine. As the VVT-iE system can operate at low engine speeds and when the engine is cold, lower emissions, increased engine power and fuel economy and enhanced startability have been achieved.

If the cam timing control motor with EDU assembly is stuck to the advanced side, the valve overlap will be long and affect the internal EGR. This may lead to poor combustion, rough idling or engine stall.
If the cam timing control motor with EDU is stuck near the most retarded angle (Atkinson cycle), depending on the vehicle conditions, sufficient intake air may not be obtained, causing a lack of power.

Part and Terminal Name	Function
Cam timing control motor with EDU assembly	Through its electric motor, operates camshaft timing gear assembly. Interior driver (EDU) detects and performs malfunction diagnosis of motor control, motor speed and rotation direction.
Camshaft timing gear assembly	Changes valve timing by rotating timing chain sprocket.
ECM	Outputs target speed and motor rotation direction in response to driving conditions.
+B	Power supply (when ignition switch to ON, 12 V or higher)
PGND	Power supply ground
VTP	Inputs motor activation signal from ECM.
VTS	Outputs actual motor speed.
VTD	Outputs actual rotation direction.
VTM	Outputs malfunction diagnosis results as a duty ratio. Open circuit in VTP and VTM Normal Internal malfunction in driver Malfunction in motor rotation sensor of driver

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0010	Camshaft Position "A" Actuator Circuit (Bank 1)	One of the following conditions is met for 3 seconds or more (1 trip detection logic). Cam timing control motor IC has overheated. Open in cam timing control motor circuit. Cam timing control motor has overcurrent.	Cam timing control motor with EDU assembly Camshaft timing gear assembly	Comes on	DTC stored

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0010

Camshaft Position "A" Actuator Circuit (Bank 1)

One of the following conditions is met for 3 seconds or more (1 trip detection logic).

Cam timing control motor IC has overheated.
Open in cam timing control motor circuit.
Cam timing control motor has overcurrent.

Cam timing control motor with EDU assembly
Camshaft timing gear assembly

Comes on

DTC stored

Symptoms and Fail-safe Operation During Cam Control Motor Malfunction
Vehicle Condition	Fail-Safe
Engine difficult to start Lack of power	The cam timing control motor with EDU assembly is operated to the most retarded position.

MONITOR DESCRIPTION

This DTC is output when an IC overheat malfunction or an overcurrent malfunction is detected in the cam timing control motor with EDU assembly. The cam timing control motor with EDU assembly is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM. If the ECM receives a motor driver interior malfunction signal, a DTC is output immediately (1 trip detection logic).

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.
Idle the engine for 10 seconds.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P0010

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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.

PROCEDURE

INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

*1	Camshaft Timing Gear Assembly
*2	Eccentric Shaft
*a	Spline

Remove the camshaft timing control motor.

Click here

Check if the camshaft timing gear assembly eccentric shaft rotates smoothly.

OK
Rotates smoothly.

Tech Tips

Perform "Inspection After Repair" after repairing or replacing the camshaft timing gear assembly or cam timing control motor with EDU assembly.

Click here

Result

Proceed to
OK
NG

OK

REPLACE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY Click here

NG

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

SFI SYSTEM, Diagnostic DTC:P0010