DTC P0010-01: Camshaft Position "A" Actuator Bank 1 General Electrical Failure [12/2019 - 10/2022]: Description

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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 assembly 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.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Part and Terminal Name	Function
Cam timing control motor with EDU assembly	Through its electric motor, operates camshaft timing gear assembly. Internal driver detects and performs malfunction diagnosis of motor control, motor speed and rotation direction.
Camshaft timing gear assembly	Changes valve timing by rotating camshaft timing gear.
ECM	Outputs target speed and motor rotation direction in response to driving conditions.
VB1	Power supply (when ignition switch ON, auxiliary battery voltage is 12 V or higher)
GND	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	Note
P0010-01	Camshaft Position "A" Actuator Bank 1 General Electrical Failure	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. Overcurrent is detected in cam timing control motor.	Cam timing control motor with EDU assembly Camshaft timing gear assembly	Comes on	DTC stored	SAE Code: P0010

SYMPTOMS AND FAIL-SAFE OPERATION DURING CAM TIMING 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.