Bora classic variable throttle motor

1. First of all, thank me for learning from each other. 2. I have collected some information about the fault of the throttle surface for your reference. Please criticize, thank you. 4. The content mainly talks about some principle analysis and some cases. Look at the case to see if it meets the requirements. Hehe, the inspection and example of electric throttle system (the experience of the chief technician is accumulated over time). From 2006 to 2009, due to environmental requirements, electronic throttle (EPC) was adopted in the management system of EFI engine, including throttle, throttle position transmitter, control unit, regulator, throttle indicator light and engine ECU. Make judgments and adjustments. * * * *, electric throttle control system? There is a mechanical connection between the electronic throttle and the accelerator pedal. The accelerator pedal position information is collected by the accelerator pedal position transmitter, and the driver intends to accelerate, decelerate or maintain a constant speed. Then, the cable is used to directly control the accelerator, and EPC is used to indirectly control the accelerator pedal transmitter. The input voltage of potentiometer changes linearly. When the driver steps on the accelerator pedal, the signal voltage generated by the potentiometer is transmitted to the generator electronic control unit (ECU). The electronic control unit operates to drive the throttle regulator, and uses the throttle to position the motor to turn the engine to the required air intake. Engine torque is required according to the degree of stepping on the accelerator pedal. The accelerator pedal position has been set. Set the accelerator pedal position transmitter. On the other hand, the electronic control unit directly controls EPC by the signal of the accelerator pedal position transmitter. Throttle position transmitter is used as the throttle opening conversion voltage signal and sends it to ECM and TCM control unit. According to this signal and intake signal, the fuel injection quantity can be adjusted to meet the needs of various working conditions of the engine. An example of Ford Focus (C307) This car uses an electric throttle, and PCM controls the throttle degree. It also tests its implementation. The throttle position transmitter adopts the closed-loop control system PCM, which mainly determines the throttle opening according to the signal of the accelerator pedal position transmitter to improve the fuel injection pulse width during ignition. Set the accelerator pedal position transmitter and improve its accelerator pedal position. Reduce (? Accelerated limiting mode); ? Both accelerator pedal position transmitters have failed at the same time. PCM engine speed control is 1500 ~ 4000 rpm. The high-energy vehicle speed can reach 56 km/h. When the pedal speed drops, release the pedal speed when idling, and the driving computer displays the speed. Limited? Mode (speed limit)? The all-electric throttle system not only transmits the signal reflecting the actual load of the engine through the throttle position transmitter, but also provides the electronic control unit (ECU) with instructions from the ECU to adjust the throttle opening and control the intake air to increase or decrease the transmission torque of the engine, thus realizing a series of precise adjustments within the full speed load range of the engine. Electronic throttle system transmits information through data bus CAN. Even if the car is equipped with manual/automatic transmission (AMT), the electronic shift control unit can automatically adjust the engine speed to adapt to the change of vehicle speed, and the position of the accelerator pedal will change frequently, except using the electronic throttle and the accelerator pedal position transmitter. Just like a car, the electronic control unit (ECU) of the cruise control system is set separately, which can control itself according to signals such as speed transmitter, accelerator pedal position transmitter and braking. The engine malfunction indicator lamp (MIL) is installed like an electronic throttle. The function of engine fault indicator lamp is replaced by electronic throttle indicator lamp. Electronic throttle indicator (ETC) lights up to inform the driver that the electronic throttle system is faulty. The throttle is set at 8, and the engine speed is limited to 3000 rpm. Limp/home mode should check the engine fault code. Do you need to clean the throttle? What causes the abnormal performance of electric throttle system? (1) idle chatter or occasionally shut down? Cancel the idle speed regulating valve like an electric throttle engine, and control the idle speed directly through EPC. If the engine idles or turns off occasionally, the spark plug will be fine. How many dirty electric throttles can be solved by cleaning the throttle and making basic settings? When the valve generator of 16 car starts idling around 15s, how to eliminate the trouble of cleaning the electric throttle? (2) Is the car seated now? When the electronic throttle valve (EPC) is adopted to optimize the acceleration performance control, the special off state signal, gear position signal and air conditioning off signal are transmitted to the electronic control unit (ECU) of the generator. * * * Passat B5, a vehicle participating in electric throttle control? 2.0 The car travels 70,000 km, and the EPC light on the dashboard occasionally lights up for the car to sit on. Cleaning the throttle and repairing the broken exhaust gas recirculation pipe (located at the throttle) failed to rule out how many pedals should be pressed continuously. The EPC indicator light went out and the car was found to be damaged. Because the car is equipped with an electric throttle, once it is opened, the generator electromechanical control unit (ECU) commands to reduce the fuel injection quantity, temporarily reducing the engine power transmission, the engine acceleration performance is obviously deteriorated, and the car sat is lit. (3) Does the heavy steering fault code indicate that CAN communication failed? A Mercedes-Benz car with W 140 chassis lights up the ASR warning light and the steering wheel is strongly controlled. It is analyzed that the failure of ABS/ASR system is caused by the failure of wheel speed transmitter and hydraulic controller outside ABS/ASR system. The typical electric throttle is caused by the fact that the ABS/ASR control unit can't get the signal of throttle accuracy (i.e. engine load). The ASR function is turned off. Throttle signal needs to be transmitted through CAN data bus. The ABS/ASR control unit stores the fault information of CAN bus communication and lights the ASR warning lamp. (4) Is the air conditioning system in a fail-safe state? The faults of Magotan electric throttle (J338) include the loss of throttle position transmitters (G 187, G 188) and the degree of dirty throttle. Does the electronic control unit (J623) accept the load to command the cooling fan to run continuously at low speed? *** ? Third, the original analysis of the lighting of EPC lights in many cars? After the EPC indicator light is lit, many cars are prone to failure, which leads to the lighting of EPC lights of many cars. What are the first two types? Self-diagnosis and alarm of electronic throttle system Some parts of the electronic throttle system are out of order. EPC light is on. Parts related to self-diagnosis alarm of electronic throttle system: accelerator position transmitter (G 187G 188), accelerator pedal position transmitter (G79G 185), starter harness (harness resistance changes, good grounding, etc. ) and EPC indicator light. Engine torque control adjustment out-of-tolerance electric throttle system core function power control engine torque control engine ECU compares actual torque with target torque, binary out-of-tolerance light EPC light and torque control related components: brake pedal off, light bulb off, clutch pedal off, automatic transmission, hydraulic power steering system pressure off, air conditioning (A/C) pressure off, electric cruise control (CCS) off, etc. An example of a POLO) 1.4L car, the EPC indicator light is on, but the real fault is found. The fault code should be cleared, and the EPC indicator light will go out for a short time. Maintenance personnel perfunctory customers, but did not find the real source of failure. How many faces did you see when the EPC indicator of POLO car was on? 1? The leakage of the air intake system includes the leakage of the crankcase ventilation device, the operation of the engine, the vacuum leakage of the oil absorption gauge or the filler cap, etc. Engine ECU makes compensation and adjustment according to the signal of oxygen sensor. The super internal program allows the limit ECU to determine the fault of the electronic throttle system. 2? For the maintenance of dirty throttle, refer to the fault code 17550 (lower than the limit of load record value) detected by the original connection scanning tool or the co-occurrence fault code1755017961(proportional to the pressure signal of the suction pipe of the height transmitter) to clean the throttle, and execute 01-. 3? The failure of electronic throttle system components or lines includes the failure of controlling the actual electronic throttle system. 4? Low cylinder compression pressure leads to cylinder missing? After careful inspection in all aspects, it is confirmed that there is no problem. If the EPC indicator light is still on, it needs to be solved by refreshing the code of the generator electronic control unit-the original 4837 or 4449 (manual gear) is changed to 6512; The original 4838 or 4378 (automatic transmission) was changed to 65 13 *** four. Basic setting of electric throttle system? The electronic throttle system needs basic settings: replacing ECU, replacing electronic throttle, cleaning or repairing throttle, ECU load and ECU remote coding, etc. After cleaning the electric throttle, it is necessary to set the basic throttle so that ECU can read the throttle opening and closing position and ensure the whole system to run well. The car equipped with 16 valve starter adopts electric throttle, and the idling speed is 15s at each start. The dirty electric throttle often leads to the need to clean the throttle, and there is no special fault diagnosis equipment. PROXIA uses the worker to set the accelerator pedal position of the electric accelerator: turn off the ignition first and keep it at the M position for 30s (you have to step on the accelerator pedal to turn off the ignition). Turn off the ignition switch and keep it at 15s. Let the EEPROM of the memory of the electronic control unit (ECU) remember the basic setting parameters of the throttle. It is said that ECU can accurately control the throttle engine to limp, and it needs special scanning tools to basically set up the engine operation to recover. Basic settings for cleaning the electric accelerator of Triumph car: connect the battery, turn off the ignition for 30s, then turn off the ignition key 15s, and then make the accelerator pedal position. Basic settings: when stepping on the accelerator pedal, insert the ignition key, turn off the ignition, step on the accelerator pedal, stop at 1s, and start the machine after releasing the accelerator pedal. Pay attention to two problems when performing the basic setting of electric throttle system? ① Remove the negative battery wire before cleaning the throttle, clear the original throttle memory value of ECU, and speed up the cleaning adaptive process? ② Peugeot 307 should be equipped with a coolant temperature of 30℃. 2.0L car cleaning accelerator pedal can barely open when stepping on the accelerator pedal. If you want to turn off the engine and start the driving distance again, use a scan tool to set the basic throttle settings. 1 The same phenomenon occurs. The engine fault light should illuminate. The basic setting of the electric throttle of this car should be done with the original diagnostic instrument. Please note that the engine coolant temperature must be 30℃ and the ECU should adapt to the time ratio. Compared with the idle working condition, it is necessary to learn that when the coolant temperature reaches 97℃, the electric fan will start to rotate and stop the high temperature, and make the basic setting fault. Now the coolant temperature is 30℃, and the basic setting can still solve the problem. Can the electric throttle be replaced? * * * V. What should I pay attention to when detecting the fault of electric throttle? 1? Power generation throttle signal is good: the throttle is dirty, the basic setting is not carried out, the relevant lines are in good contact and the working voltage is low. 2? See table 1 for the position of the accelerator terminal of Chery SQR484F generator. There are six terminals, such as electronic accelerator. 3? The signal voltage of the throttle position transmitter (TPS) increases with the increase of the throttle opening, and the signal voltage of the throttle is close to 5V. To read the data flow of TPS (see Table 2), you must slowly press and release the accelerator pedal, and observe carefully, so as to prevent the plate pad from obstructing the opening or closing of the throttle valve, thus leading to high idle speed or sufficient force. 4? Dual-fuel vehicles need to adjust air intake. 16V dual-fuel vehicles use liquefied petroleum gas. At present, the fault light is on. Read the fault code and replace the electric throttle, but the fault code is effectively cleared and the fault light is lit again, indicating that the fault is caused by burning liquefied petroleum gas. Often, the air intake of LPG and driving will be adjusted to reduce fuel consumption and save operation. This node can compensate for the loss. Because the mixture is too thin and the combustion is slow, the working cycle is changed to the working cycle and a new combustion cycle is started, and the intake valve is flushed open, resulting in fire. Fire can make the throttle valve not tremble under current. Calculation of early damage of valve, spark plug, cylinder gasket, cylinder head, intake manifold and air cleaner housing caused by detonation of throttle fault code; The loss is really compensated; Dual-fuel vehicles should blindly adjust the air intake to avoid causing a series of problems. 5? Yubao 1.8T vehicle (with electric throttle) has the fault phenomenon that the electromechanical control unit lacks grounding signal when stepping on the throttle. The accelerator pedal reacts (the engine can accelerate). The EPC light on the instrument panel lights up and stores the accelerator pedal position transmitters (G79, G 185). Fault information treasure 1.8T Special fault handling case of automobile electronic throttle system: Replace the accelerator pedal position transmitter engine ECU to match Jetta's vehicle power to run smoothly. After inspection, it was found that the throttle needed cleaning. Consider the steps and difficulty of car cleaning (matching). Now I hope you can remind us of the tools: carburetor cleaner, carp pliers, flat screwdriver, hexagon socket set, flashlight, wet paper towel (choose to use as paint dusting cloth, hehe, hair shedding is quite suitable. ) Tips for loosening the cover plate of the engine cover 4 Fasten the red frame position of Dongdong diagram: throttle body diagram "class =" ikqb _ img _ alink ">? Unplug the air filter tube and electric plug? Figure "class="ikqb_img_alink " >？ Loosening the spring clip fixing the air filter tube (G for short) to the air filter box needs to be clamped and expanded to a certain extent. The spring clip moves the plastic pipe of the air cleaner box in the direction of the arrow, that is, gently pull the connecting part of the G air cleaner box "class="ikqb_img_alink" >. Please pay special attention to 2. Where is the hard-to-remove spring clip? Figure "class="ikqb_img_alink " >？ If G is to be disassembled, pay attention to the connection and disassembly of concealed pipes. Pay attention to the position of the connection to the oil filler. The surface of rubber tube needs to be marked with chalk line when uprooting. Please refer? Take off the pipe G completely and wait for the internal schematic diagram of the throttle body "class="ikqb_img_alink" >? Unscrew No.4 throttle fixing screw with No.5 Allen key. Pay attention to tighten the screws. Don't put down the hand-held accelerator. Figure "class="ikqb_img_alink " >Figure "class="ikqb_img_alink " >.....................................................？ Screw off the throttle and step on the throttle court? Figure "class="ikqb_img_alink "> Before cleaning the throttle, gently wipe the dirt in front of the throttle diaphragm according to the cleanliness. Wipe off the dirt with a wet towel (or dust-proof cloth for painting). Wipe with carburetor cleaner and spray wet paper towel (dust cloth) until it is clean. " class="ikqb_img_alink " >？ Be sure to make a match. As for matching, the detectors are all matched. Dr che and 43 1 basically use 505 1 software VAG-COM line. Do you want to Baidu casually? Note: It is beneficial to clean and repair the throttle valve regularly according to the mileage and environmental conditions of the vehicle. Is the air inlet unobstructed because the dirty condition prevents ECU from increasing the throttle plate? And the angle recorded in ECU memory is more than the angle of clean throttle? The owner reads the angle of the car. The throttle plate describes this situation. The throttle is clean and dry, with a net. Under the same working conditions, the air intake is blocked and the air intake is reduced. What is the so-called idle stability? The matching to be done should be called throttle initialization, and the technical term is factory setting? The throttle recovery factory has set certain operating conditions, which are definitely higher than the dirty throttle. On the other hand, it is difficult to understand that the reason for matching comes from: getting help.