Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What are the basic methods for automotive fault diagnosis?

1 Answers

ORemington

07/29/25 12:54pm

Here are the methods for automotive fault diagnosis: 1. Understand the initial condition; 2. Inquire and test drive. 3. Verify fault symptoms; 4. Analyze and study. 5. Reason and hypothesize; 6. Propose diagnostic steps. 7. Test and confirm the fault point; 8. Verify after fault elimination. 9. Identify the fault. Additional information: Automotive fault diagnosis refers to the detection, analysis, and judgment conducted to determine the technical condition of a vehicle or to identify the location and cause of a fault when the vehicle has potential faults, deteriorating technical conditions, or has partially or completely lost its operational capability, all without disassembling the vehicle. The methods for automotive fault diagnosis can be divided into manual diagnostic methods and instrument-based diagnostic methods.

Was this review help?

15

0

Share

More Forum Discussions

What are the effects of carbon deposits in the fuel tank?

Here are the impacts of carbon deposits in the fuel tank: 1. Reduced power performance: Carbon deposits and sediments can clog the injector needle valve and valve holes, affecting the performance of precision components in the injection system, leading to poor fuel injection, inadequate atomization, and reduced power performance. 2. Increased fuel consumption: Carbon deposits and sediments can cause the intake valve to close improperly, reducing cylinder pressure or even causing backfire, resulting in unstable engine idling, increased fuel consumption, and worsened exhaust emissions. 3. Shortened engine lifespan: Carbon deposits on the piston top and cylinder head can easily cause localized overheating in the combustion chamber and gasoline pre-ignition, leading to engine knocking and other faults, all of which can shorten the engine's lifespan.

What is the ground clearance of the BMW X1?

BMW X1 has a ground clearance of 170mm. Here is relevant information: Exterior: BMW SUV products feature increasingly unique design styles in both appearance and configuration. The dimensions of the BMW X1 are 4454×1798×1545mm. As an SUV model, its interior space meets standards, with a luggage compartment volume ranging from 420 to 1350 liters. The multi-line styling of the car's exterior showcases the imposing presence of BMW's compact SUV. Powertrain: Equipped with 2.0L and 3.0L L4 or L6 engines, BMW, as a luxury car brand, holds a significant position in the SUV segment.

Where is the air filter of Changan Eado DT located?

Changan Eado DT's air filter is located behind the glove box in the blower. The functions of the air filter are: 1. To ensure that the air filter fits tightly against the housing, preventing unfiltered air from entering the car; 2. To separate dust, pollen, and solid particles from the air; 3. To absorb moisture, soot, ozone, odors, carbon oxides, sulfur dioxide, and carbon dioxide from the air; 4. To maintain clean air in the cabin, preventing bacterial growth and creating a healthy environment. Taking the 2019 Changan Eado DT as an example, it is a compact car with dimensions of 4575mm in length, 1750mm in width, and 1500mm in height, with a wheelbase of 2610mm.

What Causes High Idle Speed After Cleaning the Throttle Body?

The reasons for high idle speed after cleaning the throttle body are: 1. Throttle sticking and incomplete closure; 2. Faulty idle control valve; 3. Faulty coolant temperature sensor; 4. Air intake system leakage; 5. Malfunctioning air conditioning switch and power steering pressure switch. The method for cleaning the throttle body is: 1. Turn off the ignition switch and remove the negative battery terminal; 2. Remove the throttle cable, intake hose, and throttle body mounting screws in sequence; 3. Clean the throttle body with a cleaning agent, using a cotton swab for hard-to-reach areas. The throttle body is a controllable valve that regulates air intake into the engine. The air mixes with gasoline in the intake manifold to form a combustible mixture, which then burns to produce power.

Neutral or First Gear for Ignition?

It is generally recommended to start the engine in neutral. The functions of car gears are as follows: 1. First gear: Starting gear, used for vehicle launch, not suitable for prolonged high-speed operation. 2. Second gear: Passing gear, mainly used for navigating road surfaces and handling complex situations, such as sharp-angle (right-angle) turns without special obstacles, crowded urban areas, steep slopes, and bumpy road sections. 3. Third gear: Transition gear, primarily for low-speed urban driving, allowing easy acceleration to fourth gear or deceleration to second gear. 4. Fourth gear: Cruising gear, mainly used for extended high-speed driving and fuel-efficient operation, with most vehicles achieving optimal fuel economy at lower speeds in this gear. 5. Fifth gear: High-speed gear, mainly used for long-distance highway driving.

Why does the radar button of a Mercedes-Benz car always light up red?

Mercedes-Benz radar off light is red because the vehicle's stability control system is turned off or malfunctioning. Blue and green indicator lights on the dashboard indicate that the corresponding system is turned on or working normally, while yellow and red indicator lights indicate that the corresponding system is turned off or malfunctioning. Introduction to Mercedes-Benz: Positioning: Mercedes-Benz is a world-renowned luxury car brand. In addition to high-end luxury cars, Mercedes-Benz is also one of the world's most famous manufacturers of large buses and heavy-duty trucks. Car series: Mercedes-Benz passenger car series include: A-Class, B-Class, C-Class, CL-Class, CLK-Class, CLS-Class, E-Class, S-Class, SL-Class, SLC-Class, SLK-Class, G-Class, GL-Class, GLK-Class, M-Class, R-Class.

Trending Ranking

What is the repair process for a flooded vehicle?

How to deal with small dents on the car hood caused by stones?

How to Remove Oil Film from Car by Yourself?

How to Detect Transmission Problems?

How to Maintain Leather Seats?

How to Fix a Non-Lit Car Central Control Screen?

What Does OEM Protocol Mean?

How to Eliminate Fog on the Outside of the Windshield?

How to Match the Throttle Body?

How to Apply for an Auto Repair License?

More Forum Discussions

What does it mean to schedule three sessions for Subject 1?

Why does the Cruze's fan start running immediately upon ignition?

Does the 2018 Highlander meet China VI emission standards?

How to Clean Engine Sludge?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.