DTC P0010-01: Camshaft Position "A" Actuator Bank 1 General Electrical Failure; DTC P0020-01: Camshaft Position "A" Actuator Bank 2 General Electrical Failure [12/2017 - 10/2020]: 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 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
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 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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| Part and Terminal Name |
Function |
| Cam timing control motor with EDU assembly |
Through its electric motor, operates camshaft timing intake gear assembly. Internal driver detects and performs malfunction diagnosis of motor control, motor speed and rotation direction. |
| Camshaft timing intake gear assembly |
Changes valve timing by rotating camshaft timing gear. |
| ECM |
Outputs target speed and motor rotation direction in response to driving conditions. |
| VB |
Power supply (when engine switch on (IG), 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 (bank 1) IC has overheated.
- Open in cam timing control motor (bank 1) circuit.
- Overcurrent is detected in cam timing control motor (bank 1).
|
- Cam timing control motor with EDU assembly (bank 1)
- Camshaft timing intake gear assembly (bank 1)
|
Comes on |
DTC stored |
SAE: P0010 |
| P0020-01 |
Camshaft Position "A" Actuator Bank 2 General Electrical Failure |
One of the following conditions is met for 3 seconds or more (1 trip detection logic).
- Cam timing control motor (bank 2) IC has overheated.
- Open in cam timing control motor (bank 2) circuit.
- Overcurrent is detected in cam timing control motor (bank 2).
|
- Cam timing control motor with EDU assembly (bank 2)
- Camshaft timing intake gear assembly (bank 2)
|
Comes on |
DTC stored |
SAE: P0020 |
SYMPTOMS AND FAIL-SAFE OPERATION DURING CAM TIMING CONTROL MOTOR MALFUNCTION
| Vehicle Condition |
Fail-Safe |
- Engine difficult to start
- Lack of power
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The cam timing control motor with EDU assembly is operated to the most retarded position. |