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Anonymous Posted on Feb 16, 2006

What is VCT? - D-Link Express EtherNetwork DI-604 Router

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  • Posted on Feb 16, 2006
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The Virtual Cable Tester feature verifies the link status on each port. It will determine if link activity is active on each of the ports and also verify if the cable is faulty. The following routers have VCT support: DI-604 rev. E1 DI-614+ rev. B1 (Single Antenna) Step 1 Click on the Tools tab and go to Cable Test. This will display the link status for each of your ports. Step 2 Click on the Refresh button to refresh the link status to the LAN devices on the network.

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1helpful
1answer

Need to know how to fix the code p1383 on a 2001 ford escort zx2 model

Cam timing improperly set
Continuous oil flow to the VCT piston chamber
VCT solenoid valve stuck open
Camshaft advance mechanism binding (VCT unit).
0helpful
1answer

Where is the camshaft acuator on a 07 lincoln mkx

What engine ? It's a solenoid , usually located in the front of the valve cover , top or side .
Variable Camshaft Timing (VCT) System

The VCT enables rotation of the camshaft(s) relative to the crankshaft rotation as a function of engine operating conditions. There are 4 types of VCT systems.
  • Exhaust phase shifting (EPS) system - the exhaust cam is the active cam being retarded.
  • Intake phase shifting (IPS) system - the intake cam is the active cam being advanced.
  • Dual equal phase shifting (DEPS) system - both intake and exhaust cams are phase shifted and equally advanced or retarded.
  • Dual independent phase shifting (DIPS) system - where both the intake and exhaust cams are shifted independently.
All systems have 4 operational modes: idle, part throttle, wide open throttle (WOT), and default mode. At idle and low engine speeds with closed throttle, the powertrain control module (PCM) determines the phase angle based on air flow, engine oil temperature and engine coolant temperature. At part and wide open throttle the PCM determines the phase angle based on engine RPM, load, and throttle position. VCT systems provide reduced emissions and enhanced engine power, fuel economy and idle quality. IPS systems also have the added benefit of improved torque. In addition, some VCT system applications can eliminate the need for an external exhaust gas recirculation (EGR) system. The elimination of the EGR system is accomplished by controlling the overlap time between the intake valve opening and exhaust valve closing. Currently, both the IPS and DEPS systems are used.
Variable Camshaft Timing (VCT) System
The VCT system consists of an electric hydraulic positioning control solenoid, a camshaft position (CMP) sensor, and a trigger wheel. The CMP trigger wheel has a number of equally spaced teeth equal to the number (n) of cylinders on a bank plus one extra tooth (n+1). Four cylinder and V8 engines use a CMP 4+1 tooth trigger wheel. V6 engines use a CMP 3+1 tooth trigger wheel. The extra tooth placed between the equally spaced teeth represents the CMP signal for that bank. A crankshaft position sensor (CKP) provides the PCM with crankshaft positioning information in 10 degree increments.
  1. The PCM receives input signals from the intake air temperature (IAT) sensor, engine coolant temperature (ECT) sensor, engine oil temperature (EOT) sensor, CMP, throttle position (TP) sensor, mass air flow (MAF) sensor, and CKP to determine the operating conditions of the engine. At idle and low engine speeds with closed throttle, the PCM controls the camshaft position based on ECT, EOT, IAT, and MAF. During part and wide open throttle, the camshaft position is determined by engine RPM, load and throttle position. The VCT system does not operate until the engine is at normal operating temperature.
  1. The VCT system is enabled by the PCM when the correct conditions are met.
  1. The CKP signal is used as a reference for CMP positioning.
  1. The VCT solenoid valve is an integral part of the VCT system. The solenoid valve controls the flow of engine oil in the VCT actuator assembly. As the PCM controls the duty cycle of the solenoid valve, oil pressure/flow advances or retards the cam timing. Duty cycles near 0% or 100% represent rapid movement of the camshaft. Retaining a fixed camshaft position is accomplished by dithering (oscillating) the solenoid valve duty cycle.

    The PCM calculates and determines the desired camshaft position. It continually updates the VCT solenoid duty cycle until the desired position is achieved. A difference between the desired and actual camshaft position represents a position error in the PCM VCT control loop. The PCM disables the VCT and places the camshaft in a default position if a concern is detected. A related DTC is also set when the concern is detected.
  1. When the VCT solenoid is energized, engine oil is allowed to flow to the VCT actuator assembly which advances or retards the camshaft timing. One half of the VCT actuator is coupled to the camshaft and the other half is connected to the timing chain. Oil chambers between the 2 halves couple the camshaft to the timing chain. When the flow of oil is shifted from one side of the chamber to the other, the differential change in oil pressure forces the camshaft to rotate in either an advance or retard position depending on the oil flow.
0helpful
1answer

Need a camera mounting shoe for vct-60AV for tripod

http://tripodquickrelease.com/Sony_Quick_Releases.htm
You might be able to find one there, if not email with your measurements and they might be able to find you one.
3helpful
1answer

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.



Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

0helpful
1answer

I have a Sony VCT-R610, the problem is the tripod does not have the shoe? that attaches to the camera.

I have the same problem with the sony VCT R610, but these other solutions are talking about the 840...not the same I'd like to know how/where to get a quick release adapter also....for the SONY VCT R610
18helpful
1answer

P0012 Intake camshaft position timing over retarded bank one Is this a easy fix

Code P0012 - Variable Camshaft Timing Over Retarded - Bank 1

How does a P0012 code trigger the check engine light? This code will trigger the check engine light under the following condition:
* The comprehensive component monitor, referred to as the CCM, monitors the Variable Camshaft Timing (VCT) position for over-retarded cam timing. If the cam timing exceeds a maximum calibrated limit or is stuck in a retarded position, the check engine light will come on and set this trouble code.

Possible Causes:
Incorrect camshaft timing
VCT solenoid valve stuck open or continuous oil flow to piston chamber
Camshaft advance mechanism binding, or faulty VCT unit

Diagnostic Help:
This check engine light code is caused by a mechanical fault of the VCT unit or related components, so there is no need for electrical diagnosis. Possible symptoms may include rough idle, stall or hard start. Refer to manufacturer specific component tests for the VCT unit. You may also use the "Get Help" link if you need specifications or have any other related questions. Remember to refer to an appropriate manual for specific instructions.

Other details mentioned 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)

Possible Solutions:
The main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.

Hope helps (remember to rate and comment this).
0helpful
1answer

Problem for Sony VCT-1500L Tripod

Try www.TripodQuickRelease.com for that part. There is listed the widest selection of quick releases and support more brands than any other web site I’ve seen.
2helpful
1answer

P 1383 cougar 2000

P 1383 Variable Cam timing over-retarded (Bank 1) meaning the comprehensive component monitor (CCM) monitors the VCT position for over - retarded camshaft timing . The test fails when when the camshaft timing exceeds a maximum calibrated value or remains in an retarded position.
Cause :
* Cam timing imprperly set * Continuous oil flow to the VCT piston chamber
* VCT solenoid valve stuck open.
* Camshaft advance mechanism binding (VCT UNIT)

Hope that helps
4helpful
2answers

What type of quick release is in VCT-r640 SONY TRIPOD

http://www.tripodquickrelease.com/Sony_Quick_Releases.htm
they don't have that model listed, but they seem willing to try. Several people are thanked for finding out which plate fit which tripod.
2helpful
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Looking for quick release plate for vct-1170rm tripod

try contacting [email protected]
They specialize in quick release plates, and I just ordered one for my Sony tripod.
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