YT-72978 - Measuring equipment Yato - Free user manual and instructions

USER MANUAL YT-72978 Yato

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The OBD2 diagnostic tester is a portable and easy-to-use vehicle computer tester. The tester works in OBD2 standard (On-Board Diagnostics level 2). The OBD2 standard has been in force for cars manufactured in the USA since 1996 and since 2001 (EU) or 2003 for cars with a diesel engine (EU). As the power is drawn directly from the vehicle's power supply system, the device is always ready for operation. The correct, reliable, and safe operation of the device depends on its proper use, therefore:

Read the entire instructions manual before the first use of the product and keep it for future reference.

The supplier shall not be held liable for any damage resulting from failure to observe the safety regulations and recommendations specified in this instructions manual. Use of the product for purposes other than those for which it was intended shall cause the loss of the user's rights to the guarantee and under warranty.

TECHNICAL DATA

Display: 128 x 64 pixels, backlit

Rated voltage: 8-25 V DC

Operation conditions T: -20°C \~ +70°C R _h <80%

Storage conditions T: -30°C \~ +80°C R _h <80%

Weight: 160 g

SAFETY INSTRUCTIONS

Keep your work environment safe. The workplace should be well lit. Make sure you have enough room to move freely in the work area. Keep your work environment free from obstacles, grease, oil, rubbish and other waste.

The device is not resistant to flooding and is designed for indoor use. Do not expose the device to water, precipitation or other liquids.

Check the product's rating label for important information. If the label is missing or is illegible, ask the manufacturer for a replacement.

Avoid contact with all hot engine parts, otherwise you could get burned.

Avoid causing accidental fires or explosions. Do not smoke and do not keep open fire sources near fuel, engine and battery.

Do not connect or disconnect the tester while the ignition is on or the engine is running.

The warnings, precautions and instructions described above may not cover all possible conditions and situations which may occur. The operators must understand that common sense and caution are factors which cannot be built into the equipment, but they must provide them themselves.

PREPARING FOR OPERATION

The OBD2 standard was developed as an extension of the OBD standard, which is used to perform diagnostics of vehicle systems and to store its results. Some of the diagnostic results are visible to the user in the form of dashboard lights and/or vehicle computer messages. However, the system stores much more data which the person using the tester is able to read and, based on it, identify the problem with the vehicle. The tester presents data in the form of Diagnostic Trouble Code (DTC), which consists of five alphanumeric characters. The DTC structure is standardised and consists of a letter and four digits. The letter indicates which vehicle system is affected by the failure: B – body, C – chassis, P – motor, U – communication system, the first digit after the letter indicates whether the fault is general (0) or manufacturer-related (1). The next digit indicates the subsystem of the vehicle in which the fault has been registered: 0-2 – air/fuel mixture, 3 – ignition system,

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4 – auxiliary emission check, 5 – engine idling, 6 – vehicle computer outputs, 79 – transmission. The next two digits identify the specific type of fault. Refer to the vehicle service manual for a list of error codes or contact the vehicle manufacturer for assistance.

The OBD2 system checks some of the parameters continuously from the moment the engine is started until it is switched off. Such parameters will have the “Ready” or “Complete” status. Some parameters, however, can only be monitored under certain operating conditions of the vehicle, and if these conditions are not met, the parameter check status will show “Not Ready” or “Not Complete”. Please refer to the vehicle service manual or contact the vehicle manufacturer for assistance regarding the conditions for checking these parameters.

Before you start work, you must find the Diagnostic Link Connector (DLC) socket in your vehicle, which is located in different places depending on the vehicle. Refer to the vehicle service manual or contact the vehicle manufacturer for assistance regarding the DLC socket location.

OBD2 terminology

PCM – Powertrain Control Module – indicates a computer which controls the engine and the drive.

MIL – Malfunction Indicator Light – indicates a light on the vehicle's dashboard which notifies a fault.

DTC – Diagnostic Trouble Code – an alphanumeric code which indicates the location of the fault.

FFD – Freeze Frame Data – if an exhaust emission error is registered, the OBD2 system will not only return the DTC, but will also record current operating parameters which can help identify the fault.

PID – Parameter ID – the operating parameter identifier.

VI – Vehicle Information – the information on the vehicle stored in the computer system memory.

TESTER OPERATION

Indicator lights:

green – confi rms correct engine operation

yellow – indicates possible engine problem, some tests cannot be performed, pending DTC red – indicates engine problem, MIL may be on.

Buttons:

back button – allows you to return to the previous menu

arrow keys – allow you to navigate through the menu

confirm button – allows you to select the currently highlighted menu item.

Connecting the tester to the vehicle computer

Ensure the vehicle's ignition is off, connect the tester to the DLC and switch on the ignition or start the engine depending on the vehicle.

Wait until the start screen appears. This can take up to several seconds. During this time do not disconnect the tester from the DLC and do not press any buttons.

The start-up screen contains the “Scan” and “Setup” items. Selecting with the arrows and then selecting with the approval button: the “Scan” item will start the OBD2 diagnostics; the “Setup” item allows access to the tester settings.

Tester settings

Language – allows the language of operation of the tester to be selected – the factory setting is English.

Unit of measure – allows the selection of units of measure between metric and imperial. Metric units are set by default.

Contrast – allows the contrast of the display to be selected. the default setting is 25%.

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OBD2 diagnostics

Diagnostics are initiated by selecting the 'Scan' option on the tester's main screen. By default, engine diagnostics will be run, but if transmission (gearbox) diagnostics is enabled, a selection menu will appear where "Engine" means engine diagnostics and "A/T" means transmission diagnostics.

The diagnostic menu allows:

• DTC reading;
• reset of all DTC codes;
• data stream – reading and displaying all data for the supported sensors;
• display of freeze frame data;
• i/M reading – checking the operation of the emission system on OBD2-compliant vehicles. Some vehicles can support an I/M reading check of two types. A. Since the DTC was reset. B. This drive cycle – shows the status of the sensors of the current drive cycle. I/M readings can be as follows: "OK" – diagnostics completed; "INC" – diagnostics not completed; "N/A" – no support.
• vehicle information: VIN – Vehicle Identification Number, Calibration ID – file calibration ID, CVN – Calibration Verification Numbers – a checksum of the file calibration which allows you to verify if the computer has been programmed outside the authorised service centre of the vehicle manufacturer.

DEVICE MAINTENANCE AND STORAGE

Clean the tester housing with a slightly damp cloth (water) and wipe it dry. Never immerse the tester in water or other liquids.

Store the tester separately so that it is not exposed to impacts, e.g. from other tools in the toolbox. The storage area should be shaded and well-ventilated. It should also protect against unauthorised access, especially by children.

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