Mitsubishi MPI injection system. Self-diagnosis and fault codes. Free Technical Library article

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Schemes of radio-electronic and electrical devices

Mitsubishi MPI injection system. Self-diagnosis and fault codes

Free technical library

Encyclopedia of radio electronics and electrical engineering / Automobile. Electronic fuel injection

Comments on the article

On the instrument panel of vehicles equipped with this fuel injection system, a malfunction indicator lamp "CHECK ENGINE" is installed. It lights up if there are any errors in the operation of the injection system and indicates the need for diagnostics and troubleshooting. A two-digit error code is stored in the memory of the electronic control unit, which can be read using a multi-tester or a conventional analog DC voltmeter with a measurement limit of 25-30 volts.

Erasing error codes in the ECU memory occurs when the power is turned off. If you need to erase them, it is necessary to disconnect the positive terminal of the battery for 10-15 seconds with the ignition off. Accordingly, self-diagnosis should be carried out at least 10-20 minutes later. vehicle operation (better at different loads), after the last battery disconnection.

On a Lancer car, error codes are read using a connector installed in the footwell on the left, next to the fuse box. To do this, the multi-tester is connected to this connector. Next, you need to follow the instructions of a specific tester. To read error codes using a voltmeter, it is necessary, with the ignition off, to connect a voltmeter to 1 terminal of the connector (+) and 12 (ground). Usually, pin 12 is connected to ground with a black insulated wire, but it is better to ring it to ground first. The positive terminal (1) of the diagnostic connector is diagonally opposite. Connections should be carried out with the ignition off, otherwise the electronic control unit may be damaged.

Reading codes is done with the ignition on (not the starter). At the moment the ignition is switched on, the voltmeter needle should deviate briefly. Then the ECU will start issuing error codes - first longer pulses (most significant digit of the code), then short pulses (lower digit). You should record the number of pulses and determine the direction of troubleshooting from the table.

The presence of pulses of the same duration (only short pulses) corresponds to the absence of error codes stored in the ECU memory. In this case, if there is a malfunction, it is necessary to make a test drive lasting at least 10-15 minutes. and repeat the self-test.

If the voltmeter needle deviated once and did not return to zero, then a malfunction is present in the ECU. After reading the error codes, turn off the ignition, turn off the tester or voltmeter and proceed to troubleshoot. After that, with the ignition off, disconnect the positive battery terminal for at least 10-15 seconds. and make a test drive. Then repeat the self-diagnosis. If the ECU does not generate error codes, repeating the above operations is not required, if a new error code is received, then it is necessary to eliminate the following malfunction and repeat the self-diagnosis again.

Table of ECU error codes "Mitsubishi MPI"
11	Lambda probe
12	Air flow meter
13	Air flow temperature sensor
14	Throttle position sensor
15	Crankshaft position sensor
21	coolant temperature sensor
22	crankshaft angle sensor
23	TDC sensor of the first cylinder
24	Vehicle speed sensor
25	Air pressure sensor
31	Knock sensor
36	Ignition moment
41	Nozzles
42	Fuel pump
44	Ignition coil
code 15 only corresponds to the 1,5L engine. code 36 only corresponds to the 1,5L engine. code 42 may also indicate a malfunction of the control relay code 44 only applies to a 16 valve engine

PS It should be noted that the read error codes do not always unambiguously indicate a malfunction of any sensor or element of the injection system. When diagnosing the injection system, it is necessary to compare the ECU data, the constructive response of the sensors and the specific behavior of the engine at idle and under load.

Publication: cxem.net

See other articles Section Automobile. Electronic fuel injection

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Photon nose for monitoring crops 08.08.2022

Experts from two British universities are embarking on a new project to develop a photonic 'nose' to monitor crops for pests and plant diseases.

Aston University Birmingham is collaborating with Harper Adams University to research and develop technology to use light to monitor plant health. They will test the new technology on strawberries. After all, its berries are vulnerable to potato aphids, which can destroy the annual crop.

In general, with increasing pressure to find alternatives to pesticides due to environmental and human health concerns, one method is to use Integrated Pest Management (IPM) to establish an early warning system. The point is to constantly make sure that insects and diseases do not accumulate on the plants, instead of spraying the plants with chemicals. However, there are doubts about the cost and reliability of this method.

The new project uses the latest developments in photonic technology that can analyze the low levels of volatile organic compounds (VOCs) emitted by plants that are indicative of their health status. Thus, by connecting machine learning hardware, artificial intelligence can be put into practice in a commercial setting.

Monitoring technologies for invertebrate pests and plant diseases can significantly reduce crop losses.

However, most electronic noses use electrochemical sensors, which have issues with sensitivity, sensor drift, or aging effects, and lack specificity. We intend to solve this problem by building on the fast-moving technology of photonics - the science of light - and collaborating with scientists from other disciplines," said Professor David Webb of the Aston Institute of Photonic Technology (AIPT).

News feed of science and technology, new electronics

We recommend downloading in our Free technical library:

▪ site section Big encyclopedia for children and adults

▪ Radio magazines (annual archives)

▪ book Relay protection and automation at electrical substations feeding synchronous motors. Shabad M.A., 1984

▪ Croesus article. Popular expression

▪ article Eternal ink. Simple recipes and tips

▪ article Electronic-mechanical drive of the fuel pump. Encyclopedia of radio electronics and electrical engineering

▪ reference book Service menus of foreign TVs. Book #14

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews