Question about 2005 Toyota Corolla

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What is the use of ''Camshaft timing oil control valve'' ? is there any problem if I run the car without working ''Camshaft timing oil control valve'' ?

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  • Anonymous Dec 23, 2008

    ''Camshaft timing oil control valve'' is boken, but the car is working properly.
    Just I want to know what is the problem if I run the car without working ''Camshaft timing oil control valve'' ?

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1 Answer

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An oil control valve is provided that comprises a housing, a spool movably disposed inside the housing, and a damping unit disposed between a distal end of the spool and an end wall of the housing such that an impact generated by a collision of the spool at the end of its travel decreases. tom

Posted on Dec 22, 2008

  • 1 more comment 
  • Thomas Dec 22, 2008

    Oil control valve: The control unit then actuates changes through an oil control valve positioned at each intake camshaft sprocket. The oil control valve uses oil pressure from the engine to advance and ****** the intake camshafts via the AVCS actuator.

    tom

  • Thomas Dec 23, 2008

    Did my solution work for you? If so will you please change the rating to fixya, please? And if not let me know how I can help you fixya problem.

    Thanks

    Tom

  • froyboy May 31, 2010

    i think the question is also asking if there will be a problem of running the car without the camshaft oil control valve. i would like to know also because my camshaft timing oil control valve is broken and not connected, but car still runs.

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1 Answer

Where is the EGR valve located?


Doesn't have or need an EGR valve it has Camshaft Position (CMP) Actuator System
The camshaft position (CMP) actuator system is an electro-hydraulic operated device used for a variety of engine performance and operational enhancements. These enhancements include lower emission output through exhaust gas dilution of the intake charge in the combustion chamber, a broader engine torque range, and improved fuel economy. The CMP actuator system accomplishes this by changing the angle or timing of the camshaft relative to the crankshaft position. The CMP actuator simply allows earlier or later intake and exhaust valve opening during the four stroke engine cycle. The CMP actuator cannot vary the duration of valve opening, or the valve lift.
During engine OFF, engine idling conditions, and engine shutdown, the camshaft actuator is held in the park position. Internal to the CMP actuator assembly is a return spring and a locking pin. During non-phasing modes of the camshaft, the return spring rotates the camshaft back to the park position, and the locking pin retains the CMP actuator sprocket to the camshaft. The park position for the CMP actuator and camshaft is 8.5 degrees before top dead center (BTDC), which is equal to 17 crankshaft degrees BTDC. The engine control module (ECM) can only command the CMP actuator to retard the valve timing from the park position, or advance the valve timing back to the park position. The total range of valve timing authority is approximately 20 degrees of camshaft rotation, which is equal to 40 degrees of crankshaft rotation.
CMP Actuator System Operation
The camshaft position (CMP) actuator system is controlled by the engine control module (ECM). The ECM sends a pulse width modulated 12-volt signal to a CMP actuator solenoid to control the amount of pressurized engine oil, into the CMP actuator. To regulate the pressurized engine oil into the CMP actuator, the solenoid uses electromagnetic force on the solenoid pintle to pulse the oil control spool valve. The pressurized engine oil is sent to unseat the locking pin, and to the vane and rotor assembly of the CMP actuator, to either retard or advance the valve timing. The ECM will control the amount of ON time applied to the solenoid.

Aug 29, 2015 | 2008 Chevrolet Uplander

Tip

Understanding Variable Camshaft Timing (VCT)


Variable Camshaft Timing
With all of the gadgets on cars today, most of us find enough to boggle our minds inside of the passenger compartment let alone what's under the hood. Recently, many manufacturers have moved torward VCT's to improve performance, emissions and to eliminate other components. Let's start with the EGR valve or exhaust gas recirculation system. By installing a variable camshaft system on the exhaust camshaft, the manufacturers were able to eliminate the EGR valve, save money, and lower emissions.

VCT's have been installed on exhaust cams, intake cams, both cams and single overhead cams. The system is operated by using engine oil pressure to move a phaser that is mounted to the end of the camshaft and adjusts the camshaft timing while the engine is running. This is a brilliant system and the performance gained is amazing. The oil that is pressurized by the oil pump moves through oil channels to a solenoid that is controlled by the vehicles computer. The computer takes input signals from various sensors, processes the information and sends a signal to the solenoid that operates the cam phaser and in turn, adjusts the camshaft as needed.

How can I keep my variable camshaft system in good working order?
The best way to keep your VCT system is good condition is to perform regular oil changes and use a factory approved oil filter. Use of an aftermarket filter that is not factory approved can damage your engine. The material that makes up the internal portion of the filter must meet strict guidelines to assure that the material doesn't break away and enter the engines oil channels. This could block the oils path to the camshaft phaser and cause conditions such as rough running, noise and poor emissions/fuel economy. Dirty oil is a VCT's worse enemy. A few dollars extra can save thousands in repairs.

on Apr 12, 2011 | Ford F Cars & Trucks

2 Answers

P0022 for 2004 toyota sienna van


P0022 Toyota - Camshaft Position \'A\' Timing Over-Retarded Bank 2



























Possible causes




- Dirty Oil

- Faulty variable valve timing (VVT)

- Faulty oil control valve (OCV)

- Variable Valve Timing (VVT) harness is open or shorted

- Oil Control Valve (OCV) circuit is open or shorted

- Damaged Engine Control Module (ECM)




Tech notes



If the engine oil is clean and the VVT and OCV circuits are OK, replaced the VVT to resolve the problem.





When is the code detected?


After the ECM sends the target duty cycle signal to the OCV, the ECM monitors the OCV current to establish an actual duty cycle. The ECM determines the existence of a malfunction and sets the DTC when the actual duty cycle ratio varies from the target duty cycle ratio.


Possible symptoms


- Engine Light ON (or Service Engine Soon Warning Light)

- Lack/Loss of power

- Engine rough idle


P0022 Toyota Description


The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. As a result of the angle change, the engine timing is advance or retard. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.

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Aug 14, 2014 | Cars & Trucks

1 Answer

P1332


Possible sources of fault code are as follows. The code is a fault in the VVT system (variable valve timing)

Faulty position
-camshaft belt has jumped out of place on the cogs
-defective reset valve
-mechanical fault in the Variable valve timing (VVT) unit
Faulty control
-defective camshaft position (CMP) sensor
Control too slow
-low oil pressure
-poor oil quality
-defective reset valve
-mechanical fault in the Variable valve timing (VVT) unit

Mar 27, 2014 | 2001 Volvo C70

1 Answer

I have the VSC, Trac off and CEL on in my 2005 Scion XB


Here is the actual description of the code and possible causes.

P0012 SCION Description The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle/timing. As a result of the angle change, the engine timing is advance or ******. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.
- Dirty or low engine oil
- Faulty variable valve timing (VVT)
- Faulty oil control valve (OCV)
- Variable Valve Timing (VVT) harness is open or shorted
- Oil Control Valve (OCV) harness circuit is open or shorted
- Damaged ECM
Read more: http://engine-codes.com/p0012_scion.html#ixzz26Ts0Bso9

Sep 12, 2012 | 2005 Scion xB

1 Answer

Where is vct solenoid


Hi there:A code P0012 refers to the VVT (Variable Valve Timing) or VCT (Variable Camshaft Timing) components and the car's PCM (Powertrain Control Module, also called an ECM).
That consists of a few different components but the P0012 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-********, the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft.


A P0012 DTC trouble code may be caused by one or more of the following:

- Incorrect camshaft timing

- Wiring problems (harness/wiring) in intake timing control valve control solenoid system

- Continuous oil flow to VCT piston chamber

- Failed timing valve control solenoid (stuck open)



On Ford, the VCT solenoid is located at top of cylinder head underneath the valve cover and goes around one camshaft. You will need to remove the valve cover, the timing cover, then remove the timing belt, the camshaft sprockets, and finally the camshafts to remove the vct solenoid as it goes around the camshaft. You can use 2001-2003 models with same engine.



VCT or Variable Cam Timing solenoid is a device used in modern engines to change camshaft position timing in relevance to engine speed and engine timing allowing the engine to produce more horsepower without adding excessive overlap to the camshaft design.


The way the VCT Solenoid works is as follows:
The VCT solenoid works with oil pressure, it receives a signal from the ECM when the camshaft needs to be rotated either in the advanced mode or ******** mode depending on engine load and speed.The VCT solenoid is able to accomplish that by altering the oil flow in the passages that lead to the cam phaser(s), there are passages to advance the valve timing ( open the valves earlier), and passages that direct the oil to ****** the valve timing ( open them later)

The purpose of the VCT or Variable Cam Timing system is to allow the engine to move larger volumes of air in and out of the cylinders to generate maximum horsepower.
Vehicles with DOHC ( Dual Overhead Cam ) engines usually have two VCT solenoids mounted in each cylinder head, one for each camshaft, allowing the Engine Control Computer to activate each VCT timing mechanism in each Camshaft separately.
NOTE: The Cam phaser is mounted on the front of the camshaft(s) it is driven by the engine's timing chain or timing belt depending on the engine's design.



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Thank you for using FixYa, have a nice day.

Jun 20, 2012 | Cars & Trucks

1 Answer

I have a 2006 Scion xb with a code p0010. I changed the camshaft timing oil control valve but the light is still on. Can anyone help?


P0010 Scion P0010 Scion - Camshaft Position 'A' Actuator Circuit Bank 1 pdf.gif [img alt="Share Code" src="http://7ff587e0977842abc470-bfcce390d0a24108a1dce58e5acfca1f.r31.cf1.rackcdn.com/share.png"> 0 [img alt="P0010 Scion Comments" src="http://7ff587e0977842abc470-bfcce390d0a24108a1dce58e5acfca1f.r31.cf1.rackcdn.com/comments.png"> ' Add Comment - Dirty Oil
- Variable Valve Timing (VVT) circuit is open or shorted
- Oil Control Valve (OCV) circuit is open or shorted
- Faulty variable valve timing (VVT)
- Faulty oil control valve (OCV)
- Damaged ECM


Read more: http://engine-codes.com/p0010_scion.html#ixzz3LSVT0h8C

Dec 13, 2010 | 2004 Scion xB

1 Answer

I HAVE p0010 code Problem.CAMSHAFT POSITION ACTUATOR CIRCUIT


P0010 - "A" Camshaft Position Actuator Circuit (Bank 1)

A P0010 code refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module). That consists of an oil control valve (OCV), also called a solenoid valve and other components. Basically the check engine light and associated P0010 trouble code means that the voltage in the circuit has fallen below a set limit for a specific amount of time (varies by make/model/engine).

Symptoms may include:
* Check Engine Light illuminated (Malfunction Indicator Lamp)
* Rough running
* other symptoms may also be present

Causes: A code P0010 may mean that one or more of the following has happened:
* Faulty oil control valve (OCV)
* Open or short in the VVT/VCT circuit
* Open or short in the OCV / solenoid valve
* Damaged computer (PCM)

Possible Solutions: Some recommended troubleshooting and repair steps are:
* Carefully inspect the Bank 1 VVT/VCT system circuit wiring and connectors, repair as required
* With a warm engine, test the operation of the OCV, replace/repair as needed


Hope this helps to solve it (remember to rate this answer).

Nov 15, 2010 | Chevrolet Chevy Cars & Trucks

1 Answer

Check engine light code 0012 valve lifter oil pressure


i looked up trouble code P0012 for Camshaft position ”A” −timing over−retarded (BANK 1). Possible causes include: valve timing, oil control valve, oil control valve filter, camshaft timing gear assembly, or your engine control module.

Jun 28, 2009 | 2005 Toyota Corolla

2 Answers

2000 escort zx2 part name and how to remove it


would like to help looked on one in yard thats in for repair and their isnt one,(europeon model ).where does the other end go too ?? white tape would have been better if its in the well just to the left of the no 1 spark plug their shouldnt be any oil their only a water jacket beneath it ?? strange one this,,,is their a sort of plastic button on the end peice like the fuel lines if so pull it out and it should come off.Honestly iam at a loss never seen this on a europeon model.

Dec 12, 2008 | 2000 Ford Escort

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