Connecting the idle regulator. Uncomplicated devices to facilitate life that, with certain skills, it is easy to do at home. Sensor selection nuances

The correct operation of the idle sensor allows to reduce the wear of the piston group, as well as crankshaft car. In case of signs of incorrect operation of the device, the controller check can be performed manually, a multimeter or using a homemade stand.

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Purpose of idle sensor

PCX assignment in vehicles equipped with an electronic ignition system:

1. The microprocessor module is the ratio of air and fuel when creating the fuel-air mixture in the injection force unit.
2. The control unit refuses a certain amount of gasoline or diesel fuel.
3. Electronic type of systems is equipped with crankshaft controllers, detonation and flow meter. In accordance with the readings of these devices, the fuel pump is activated. The ignition is distributed over specific CBO cylinders.
4. If the driver goes the gas pedal, the fuel flap is completely closed. This leads to the fact that the proportions of the combustible mixture are disturbed. Combustion products move to the chamber when the pressure difference occurs between the graduation and intake manifolds.

Idling sensor in electronic systems Ignition performs the function of adjusting the composition of the combustible mixture during the start of the engine. With the help of signals that the controller sends, the microprocessor module decides to enrich the fuel. At the same time, he ignores the testimony that the regulator sends throttle valve. The sensor transmits signals over the line. If necessary, it opens a free channel for which air passes. This leads to an engine speed leveling while driving or idling.

User Roman Lozova presented detailed review Controller from the manufacturer General Motors for car DEU. Lanos.

Principle of operation

The principle of valve operation is as follows:

1. The control unit is calibrated the sensor readings if it is detected in the system.
2. The controller itself is a stepping electric motor. It is equipped with a conical needle, which is located in a special hole channel of the throttle node.
3. The regulator does not transmit information to the microprocessor module, but it receives it from it. Therefore, it is more correct to call it not by the sensor, but the executive mechanism is the valve.
4. The control unit determines the signal from the flow meter, which in the combustible mixture there is no air. Then he compares these impulses with those that transfers DPDZ.
5. Voltage comes to the regulatory device. This leads to the nomination of the needle from the channel. The missing air volume is fed to the combustible mixture for mixing.

Also, the microprocessor module receives pulses about the refrigerant temperature level and motor fluid. If the engine starts at low negative temperatures, it must be warmed, which will reduce wear of elements and friction nodes. To enrich the mixture, the channel of the idle sensor is opened, for this, the driver does not need to harm for gas.

At the beginning of the device, the algorithm of action is such:

1. The key is scrolled in the lock, the ignition is activated.
2. The rod is extended until the stop. Thanks to this, the needle overlaps the bypass canal.
3. When sprinkling the rod into the calibration hole, the control unit begins to count down the steps back.
4. Voltage is served on the winding. As a result, the valve returns to the initial open state.

The number of reverse steps is configured during the firmware of the control unit, this indicator may vary depending on the device model. For example, on the Bosch ECU, it is 50 steps, and on the modules January - 120.

User Dmitry Shark told briefly about the principle of action, as well as the diagnosis of the idling controller.

Injector

At the input of the collector device in injector engines The throttle is used. It is equipped with an individual position definition controller at a specific point in time.

When the engine is launched or force aggregate stops, the following happens:

1. The microprocessor module receives data on rotation revolutions.
2. The control unit analyzes the operation of the power unit, clarifies the target purpose.
3. Indications from the throttle and air controller are compared. The control unit determines the valve closed or not. It can also "understand", which in the cylinders of the power unit comes to the mixture - depleted or enriched.
4. The opening of the Valve RXX occurs. The air flow is fed bypassing the flaps. This provides the ability to maintain revolutions at a certain level programmed in advance.

In fact, several ignition system devices are involved in this process. If the car engine stops or strokes due to problems, the operation is carried out manually. This is due to the fact that the feedback in the RHX and the diagnostic system is not.

Diesel power units are not equipped with a throttle damper, so they do not use idle sensors, they are useless.

User Alex ZW described in detail about the principle of the RXH controller in the car.

Constructive features

The valve constructively consists of:

• stepping electric motor;
• four-position rod;
• spring element;
• needles.

When RXH only appeared, they were rotary or solenoid mechanisms. Such devices had two positions - open and closed. This contributed to a decrease in the efficiency of the mode of turnover of DVS. Today, four-step sensors are used in cars, characterized by the possibility of step-by-bypass.

The idle regulator itself belongs to the category suppliesTherefore, it is considered unrepretentious. It can be restored with a malfunction, but it will change cheaper completely.

Where is the RCH?

The device must be located next to the throttle of the throttle and DPDZ. In some auto, the sensor fixation can be carried out directly on the flap housing using varnish. Sometimes the device is attached using two bolts equipped with special seating holes. The main thing is that the range from the needle to the planting flange on the installed device was 2.3 cm.

Connection scheme

Diagram of connection of an idle controller

One harness consisting of four cables is supplied to the idle speed sensor, it comes from the microprocessor module. As a result of this connection, the diagnostics can cause certain difficulties. The car owner will not be able to simply submit voltage to the terminals of the device, since the microprocessor module does it impulse.

Signs of incorrect work of RXX

Symptoms of the regulator breakdown in the car:

1. Motor car stopped keeping. When moving or standing at the traffic light, the speed of the power unit can arbitrarily increase or fall, and then return to normalized. Perhaps their freezing.
2. The engine engine began to trim idle. Detonation is heard - a metal knuckle from under the hood.
3. During the movement, there is no compensation for the increased load on the engine engine.
4. There were difficulties in the launch of the power unit. If when started, the driver has to be additionally harvested on gas, it speaks of wear and the need to replace the idle sensor.
5. Provisional turns are not either supported in the insufficient level.
6. The car engine can arbitrarily stall without visible cause. This happens when driving at idle, discharge gas pedals or switching the transmission lever.
7. The scrolling rate of the crankshaft can arbitrarily fall when activating energy consumers. For example, air conditioning or heating systems, glass cleaning, optics, etc.

The main breakdowns and faults RXX

Causes of problems with idling sensor:

1. Cut power. This malfunction may be associated with wiring in auto, oxidation or damage to the contact elements on the block. If the connection is poor quality, then such a problem will manifest periodically. Difficulties may occur when diagnosing the device.
2. Pollution of the rod, which leads to its incorrect move. This problem is the most common and manifests itself as a result of the accumulation of mud deposits in the channels of the throttle assembly. If the flap is not cleaned for a long time, then the reason should be signed on the sensor rod.
3. The failure of the electric motor. Repair such a device is unlikely to succeed, the engine is subject to replacing assembly with the regulator.
4. The destruction of the sealing element as a result of wear. The problem may appear immediately after replacing the sensor if the old ring is installed instead.
5. Stem wear. If the regulator is working, then the movement of the curtain should be carried out without bite, slippages are not allowed in worm gears. To determine the status of the design elements, you will have to disassemble the device.

About the reasons, as well as signs of problems in the work of the idling valve told the "SDELAJ SAM! Pljus Interesnoe! ".

Diagnostics

Before checking the operation of the controller, the following actions are performed:

1. The parking brake lever is tightened. Under the vehicle wheels it is necessary to put anti-collective stops.
2. Opens motor compartment The car, the negative terminal is disconnected from the battery. For this, you need to weaken the tightening on the retainer.
3. The inspection of the boost space is performed. It is necessary to find an idle regulator.
4. From the device shut off the shoe with wire.

Manual checking

This diagnostic stage is considered the simplest in terms of implementation:

1. From the device turns off the shoe with wires.
2. Two bolts are twisted, the controller is retrieved.
3. The sensor is connected to the microprocessor unit. The controller at the same time must be kept in hand.
4. Engine starts, it is desirable to make a helper. At the moment, the rod must draw into the coil to the end. This occurs as a result of the receipt of the pulse from the control unit. Then he should navigate for a short distance.

Checking the idling knob manually allows you to determine the performance of the rod. When it is executed, you can make sure that the item is not flex and does not enhance inside the device.

But this version of the verification does not give a 100 percent result. Mounted on the car, the modification of the idling sensor does not match the firmware of the microprocessor unit. The rod is extended, but the required value for its extension is unknown. Therefore, the shoe and the plug is checked, and the marking is available only on the last one.

When visual inspection, it is necessary to diagnose the integrity of electrical caps and coils. It should also be monitored by the state of the bypass channel and the needle for wear.

On the performance of the inspection manually, as well as about other methods for testing the idling valve, the user Igor Belov said in detail in detail.

Diagnosis of multimeter

You can check the operation of the controller using the tester as follows:

1. From the regulator in the engine compartment, the connector with a wire is turned off. If the car is equipped with a 1.6 liter engine, then you need to unscrew the two fastenings of the throttle mechanism to the receiver. Then it moves away from the end of the latter by about 1 cm.
2. First, the tester performs the diagnostics of the electrical controller, to make sure whether the voltage is received or not. The negative terminal of the multimeter is connected to the mass, that is, the body or car engine. Positive contact must be connected to the conclusions A and D, they are marked on the connector.
3. Ignition activation is performed, the tester readings are read. The multimeter must be adjusted to the operating mode. The resulting voltage value should be at least 12 volts. If this parameter is below, it is likely that the problem is discharge rechargeable battery. With the complete absence of power, you need to make sure the integrity of the electrocups or the control unit.
4. Ignition turns off. The next step will be diagnosed directly controller.
5. The multimeter is reconfigured into the resistance measurement mode, its terminals are alternately connected to the contacts A and B, and then with C and D. The resulting diagnostic value should be about 53 ohms.
6. Then the resistance is performed between pairs A and C, as well as in and D. The working value should strive for infinity. If the obtained values \u200b\u200bturned out to be different, the sensor is subject to replacement.

Impulse check on a homemade stand

You can assemble a homemade device without chips, its scheme is shown below:

1. Equipment uses 6 volts charging. It can be taken from a mobile phone.
2. Pads on the connectors are purchased in any thematic store.
3. When diagnosing, the sensor is turned off from the microprocessor module. Stem check is performed. If the luminous indicator of the homemade stand will burn brightly, this suggests that the rod of the regulator is faulty. If the light bulb will burn half of power, then the mechanism is working.

Simple homemade stand for diagnostics

The price of such equipment is at least 1,500 rubles. Given the low cost of the idle sensor, the use of a branded stand is economically unprofitable.

How to clean the idle regulator?

Cleaning the proven RCH is considered on the example of the car Chevrolet Niva:

1. Opened motor compartment and turns off the battery. To do this, disassemble the cover of the air filtering device, which is removed and removed to the side.
2. A shutdown of the pad from the air controller is performed. The connector is located on a rubberized thick corrugation connecting the intake manifold device and cover air filter. This block is attached by means of a special P-shaped bracket. When dismantling, it can jump out, so you have to be attentive.
3. The corrugation is then disconnected from the intake manifold, it is fixed using a clamp. The same must be done with the rubberized nozzle, it connects the corrugation with valve lid. Power unit. The hose is fixed with an iron bracket.
4. A thin nozzle connected to the intake manifold device is disconnected, it dismantled with it. This hose is tightened to the fitting.
5. Inside the nozzles, you can notice contamination in the form of a car and traces of engine fluid. All hoses are cleaned and washing, after which they need to be purged. To perform the task, it is recommended to use a special cleaning agent or WD-40 liquid. The main thing is that the tube is complete with the balloon.
6. The idling sensor itself is made in a black plastic case and is installed in the intake manifold. The plug is turned off and two bolts are twisted, which fix the device. The procedure is performed using a short screwdriver with a crust tip, pre-with bolts need to remove traces of sealant. When dismantling the device, the sealing ring should also be removed.
7. PCH cleaning is performed, for this you can apply fuel. The procedure is carried out using vehicle and cotton sticks. You can not pour into the mechanism a lot of fluid in order not to deduce it. After each clearing, the sensor must oxide and dry.
8. It is recommended to remove the dirt from the intake manifold device, the contamination is removed using rags. It is cleaned by the selection of the idling sensor across the depth. Also remove contamination from the device fitting.
9. After cleaning, the entire design is assembled in reverse order. A new rubber ring is installed on the idle speed sensor, after which the controller is mounted in place and fixed. The connector is connected to it, the air filtering device is installed back.

Dismantled corrugation with hoses Removing the RHX from the landing place WD-40 Liquid Sensor Cleaning

What do you need to know when replacing RXX?

To change and install a controller that allows you to adjust idling, It is necessary to pay attention to the position of the rod. It is impossible to allow it to be strongly nominated. This may occur if before installing the device will be connected to the block and the ignition is activated. Hands to moving the rod is not allowed.

If the valve with an extended needle put and tighten the fixing screws, it may damage the device as a result of the worm transmission cutting. Repair this sensor will not work. Depending on the vehicle model, after installing a new regulator, it may be necessary to calibrate it. In some cars, this procedure is carried out using special equipment or stand.

On VAZ cars, calibration is performed as follows:

1. A terminal is connected to the negative battery output.
2. The key in the lock scrolls to turn on the ignition for ten seconds. You do not need to run the power unit.
3. The ignition is turned off.

Ussyuk user told about self-replacement idling valve on the example of the car Lada Samara.

To increase the life of the sensor, it is necessary to follow simple rules:

1. Replacing the air filtering device must be carried out on time.
2. Cannot be left vehicle on the long parking in winter. At low negative temperatures, the car owner should periodically launch the power unit, warmer it and produce penitz. This will develop a valve to prevent its jam.
3. It is impossible to allow third-party fluids to enter the throttle zone. Spray to quickly launch the engine usually do not represent hazards for the sensor, but they do not even overdo it.

Sensor selection nuances

The original monitoring controller has a labeling type XX-XXXXXXX-XX. The last two characters determine the compatibility mark.

Read more about them:

• odd symbols (03 and 01) are interchangeable, as well as even (04 and 02);
• these groups of devices cannot be replaced, that is, even impossible to put instead of odd.

It is possible to determine the underliest low-quality idling sensor by several features:

• there are no distinctive marks on the device packaging;
• the string tip has a dark shade;
• yellow sticker on the case of the device has no framework;
• original sensors are equipped with a thin black seal, and fakes - a thick red ring;
• the housing of the poor-quality device will be shorter than 1 cm;
• neoriginal sensors are equipped with a white spring instead of black, its coils are more rare;
• there are no caps with a diameter of 3 mm on rivets.

How much does idle regulator cost?

The cost of the new valve depends on the manufacturer, as well as the brand of vehicle.

Video "Independent calibration and removal of a rod with RXH"

User Ruslan K told how at home to make a dismantling of the needle from the regulator and perform its calibration without special equipment.

Idling regulator is designed to provide stable work Engine in idle mode. Manages the work of RXX, which, depending on the mode loads, supplies power to bipolar stepper engine Regulator. Consider how to check the idle sensor and how to understand that the reason for floating revolutions is in the fault of the regulator.

Signs of breakdown

• (Floating turns).
• Spontaneous lifting or dropping of idle speed.
• The car stalls when the gas is discharged.
• After starting the cold engine there are no warm revolutions. In independence on the position of the throttle, to reduce the time of heating the catalyst ECU by 200-300 rpm. Raises idle speed. If the RCH is faulty, the stepper motor will not be able to adequately shift the position of the rod with a conical needle, thereby increasing the passage section of the throttle node bypass channel.
• When you turn on powerful consumers, the current turns fall either begin to float. The inclusion of the air conditioner compressor, or the combination of electrical appliances loading the generator, increases the load on the engine, which leads to a drop in the number of revolutions. Therefore, in idle mode, the ECU using the regulator increases the passage of the bypass channel, thus aligning the turnover.

Fault

Computer diagnostics

Despite the fact that in common RXH, it is customary to be called a sensor, the device is exclusively an actuating mechanism that has no feedback from the ECU. In other words, the voltage feed engine control unit sets the desired stem departure. But the ECU cannot objectively check the actual position of the rod, so the discrepancy between the desired and actual values \u200b\u200bis not fixed anywhere. This means that in the event of a sensor malfunction on dashboard Check Engine does not light up.

The self-diagnosis system can only register a few malfunctions of the RCX control circuit. Error options that are before checking the idle sensor can be determined by the diagnostic device through the OBD II connector:

• Р0505 - the error code indicates a malfunction in the control circuit;
• P0506. - the sensor is blocked, low idling;
• P1509. - Overload of the RCX control circuit;
• P1513. - closure to the land of the sensor control circuit;
• P1514. - open or closure on + 12V RCX control circuit.

Verification of the RHX Multimeter

How to check the idling sensor by a multimeter:

• in measurement mode direct current Measure the voltage on the regulator connector (ignition should be turned on). No food will indicate a break in the control circuit;
• check the resistance of the stator windings in the resistance measurement mode (range - up to 200 ohms). SD has two windings, so you need to follow the correct connection of the tester terminals. IN technical documentation To the sensor installed on your car, you can find the nominal winding resistance. For example, for PCX 2112-1148300-02, the normal resistance is 51 ± 2 ohms, and for Pxx 2112-1148300-01 - 53 ± 5 ohms (both devices are installed on many VAZ models). If the indications of the multimeter talk about the imminent resistance approaching to infinity, it means that there is a breakdown in the winding circuit.

  

  Connection diagram RHX VAZ 2110

  It is possible to fully check the RHX only with the help of a special diagnostic equipment. But in most cases, checking a multimeter, visual inspection and defecting after disassembly allow you to quite accurately diagnose the presence of a malfunction.

  Remember that after replacing, flushing RXX need to carry out software adaptation of the sensor.