Q: two vehicles have recently been repaired and, although the failure has been eliminated, many questions remain in my mind. The first vehicle, long ansung, is a combined electronic m1. 5. 4 electrical control system, with failure due to speed failure, with a maximum speed of 3,000 r/min and a glitch between 1000 and 1500 r/min, and a reading of the failure code by x431 indicating a failure of the glitch, which was measured and found to be inexhaustible for both circuits and eliminated after replacement。
The second vehicle, atm 1. 3l, speeded up the impotent motor vehicle, was not easily activated and read the failure code showed that the system was running low. Reading data stream generation is in the range of 9. 2-10. 5 v, but it is normal to directly measure close to 14 v. When the electrical control system was checked, the oxygen sensor heater was not supplied with 12v power. An examination of the circuit chart showed that the oxygen sensor heater was being provided by air conditioner insurance, while the fan was being supplied with electricity, and that the inspection coverage had been burned, as the replacement of the oxygen sensor heater had been eliminated by a radical grinding and ironing。
In the first case, the power was broken. Is it possible for the walk-in computer to enter the failure protection mode, control the amount of oil spray, and adjust the range of the ignition angles
The second failure, the failure of the oxygen sensor or the failure of the oxygen sensor line, the failure code of the electrical control unit, why is the system voltage abnormal? And the oxygen sensor's voltage fluctuates between 0. 1 and 0. 9 v, which is also the reason for the non-preparatory diagnostic machine! For vehicles with a single oxygen sensor, a circuit failure or aerobic sensor failure control unit should enter the open ring control voltage at 0. 45 v, which has an impact on emissions and can be so significant for acceleration? And it's not good to start。
At the same time, there is a question as to where the audi a6-2. 4 brake-aided vacuum pump is installed and where is the insurance
On these issues, it is hoped that the experts will not hesitate to help me to overcome my confusion。
The first failure: the failure of the glitcher and the failure of the glitch to normal values requires constant computer learning. In general, the following malfunctions occur in cars at the learning stage or at the failure protection stage: (1) inefficiency; (2) acceleration and delay; (3) acceleration and instability; (4) fuel economic variability; (5) hybrid gas overheating or thinness; (6) transmissions are not smooth. Despite the different models and failures, the impact is significant, so we should draw sufficient attention. It's a lot of bad cars
The second failure, since you are a maintenance worker, is sure to know that the batteries will never be connected by one line, because it is normal to directly measure the amount of power generated close to 14 v to avoid interference with one another, in order to ensure that important circuits are powered independently, and that other electrical appliances, when they have a large amount of electricity, as you say, the oxygen-sensor heater is flat-lined with iron, resulting in the reading of data streams between 9. 2 and 10. 5 v. Computers are also supplied independently, and once the computer's own power supply is normal, the failure code of the aerobic sensor heater will not be reported. There are also computer software programs that do not have any heater failure code, which can only be reported when the oxygen sensor is short or broken. The oxygen-added sensor itself is an passive sensor, a two-wire sensor, a signal line, a wire, and no heater. It works as long as the ambient temperature in the vent is up. The oxygen-sensor fluctuates normally between 0. 1 and 0. 9 v, which also indicates that the oxygen-sensor is good。
From an environmental point of view, the most important sensors on a vehicle are no longer air flow meters, inductive pressure sensors, etc., but have become oxygen sensors. As oxygen sensors monitor emissions, there will be increasing emphasis on oxygen sensors in computer software programs. The computer software program will make it impossible for you to use an environmental vehicle once the oxygen sensor is not working properly. From difficult to non-start; from bad to non-acceleration; from cruise vehicles to black smoke, there are many faulty failures, including an ageing engine, poor cording, poor acceleration to non-acceleration. That's why you take the oxygen sensor plug and speed it back to normal。
Third, with regard to the audi a6 2. 4 brake-aided vacuum pump, it is installed on the engine tank cap cam axis because it is driven by cam axis. There are also electric vacuum pumps, located in the rear of the former bumper, under the main light on the left, as shown in figure 1. The insurance is under the driver's wheel。
