Skaner OBD2 iCarsoft JP V4.0 Toyota Lexus Nissan Honda Mazda

Flagship iCarsoft tester for Japanese and Korean cars

iCarsoft JP V4.0 is an advanced diagnostic tester designed for 16 Asian brands. The manufacturer positions it as a touchscreen successor to the JP V3.0, offering full diagnostics of all systems, bi-directional control, ECU coding for selected Hyundai / KIA / Mazda / Subaru, 49 service functions, CAN-FD, and AutoVIN.

The device runs on the Android system, has a 5-inch touchscreen, a 1.3 GHz Quad-Core processor, 64 GB of memory, and a 5000 mAh battery providing about 6 hours of continuous operation.

Unlike the older JP V3.0, updates are done wirelessly via Wi-Fi – without the need to use a computer for standard software updates.

Support for 16 Asian brands

JP V4.0 is factory-designed for diagnostics of 16 Asian car brands:

• Daewoo,
• Acura,
• Honda,
• Hyundai,
• KIA,
• Isuzu,
• Mazda,
• Mitsubishi,
• Infiniti,
• Nissan,
• Nissan GT-R,
• Subaru,
• Suzuki,
• Lexus,
• Scion,
• Toyota.

The manufacturer groups some brands together, including Toyota / Lexus / Scion, Nissan / GT-R / Infiniti, Honda / Acura, and Hyundai / KIA / Daewoo.

The range of functions depends on the specific model, year, target market, and ECU version. Before purchasing for a specific car, we recommend checking compatibility by VIN number.

Main advantages of iCarsoft JP V4.0

• Full diagnostics of all supported vehicle systems
• 22+ active tests / full bi-directional control
• ECU coding for selected Hyundai / KIA / Mazda / Subaru
• 49 service functions – 9 popular + 40 advanced
• Support for 16 Asian brands
• CAN-FD
• AutoVIN
• 5″ HD touchscreen
• Android system
• 1.3 GHz Quad-Core processor
• 64 GB internal memory
• 5000 mAh / 18.5 Wh battery
• About 6 hours of continuous operation
• Lifetime free Wi-Fi updates
• No mandatory subscriptions, renewals, or paid unlocks
• 15 language versions, including Polish
• Full 10 OBDII modes
• Diagnostic history, reports, and Feedback function

Full diagnostics of all systems

JP V4.0 provides access not only to the four basic systems – engine, transmission, ABS, and SRS – but also to more advanced electronic modules available in the vehicle.

• engine control unit,
• automatic transmission,
• ABS and braking systems,
• SRS / Airbag,
• steering system,
• suspension systems,
• air conditioning and heating,
• body and comfort modules,
• power supply and energy management systems,
• other supported ECU modules.

Advanced diagnostic functions

• reading and clearing DTC fault codes from all available modules,
• reading ECU information, part numbers, software versions, and controller status,
• viewing LIVE DATA parameters in real-time,
• reading and clearing Freeze Frame data,
• access to all supported controllers via standard 16-pin OBDII connector,
• saving diagnostic history,
• saving, sharing, and printing reports.

22+ active tests and bi-directional control

JP V4.0 can send commands directly to supported modules and actuators. The manufacturer declares 22+ active tests, and their range is expanded with each update.

Sample tests include:

• activating the ABS pump,
• controlling window lifters,
• activating the fuel pump,
• controlling the throttle,
• controlling the EGR valve,
• testing injectors,
• activating radiator fans,
• controlling transmission solenoids.

The availability of specific tests depends on the brand, model, year, and controller version.

Advanced ECU coding – Hyundai / KIA / Mazda / Subaru

JP V4.0 offers coding, adaptation, and personalization functions for parts of Hyundai, KIA, Mazda, and Subaru vehicles.

• Hyundai / KIA – from 2010 – module matching, configuration saving, and data migration after component replacement.
• Mazda – 2003–2020 – programmable parameters, activation of selected functions, and personalization of settings.
• Subaru – from 2014 – configuration of warning systems, automation, and display settings.

The manufacturer clearly states that ECU coding is available only for parts of vehicles from these brands. Support for additional models and brands is developed through updates.

Hyundai / KIA coding – module replacement and matching

For selected Hyundai and KIA models from around 2010, the manufacturer declares the Variant Coding function and data migration after replacing the controller.

Supported applications may include, among others, AEB, BCW / BSD, ECS, EPB, and HCU modules. Depending on the controller, it is possible to save settings related to the type of drive, transmission, safety system configurations, and vehicle parameters.

The manufacturer also describes the Backup & Input function, allowing data transfer from the original controller to a compatible replacement module in supported applications.

Mazda coding – programmable parameters and personalization

For selected Mazda models from around 2003–2020, JP V4.0 allows changing supported programmable parameters.

The manufacturer lists, among others:

• turning on and off the alarm, automatic lights, and rain sensor,
• changing the interior light timeout,
• adjusting selected warning signals of the instrument cluster,
• changing the mileage units,
• configuring Remote Keyless Entry and automatic unlocking,
• changing tire size/circumference and TPMS placard pressure values in supported models.

Subaru coding – vehicle function personalization

For some Subaru models from around 2014, the manufacturer declares the possibility of personalizing selected vehicle functions.

• settings for locking and unlocking signals,
• sensitivity of automatic lights,
• settings for DRL lights,
• automatic locking timers,
• open door alerts,
• synchronization of hazard lights,
• factory alarm settings,
• automatic tilting of mirrors when reversing,
• display contrast and selected regional settings.

49 service functions – 9 popular + 40 advanced

JP V4.0 offers a total of 49 service functions:

• 9 popular service functions for daily maintenance and servicing,
• 40 advanced functions for more complex workshop tasks.

Typical applications include, among others, oil reset, DPF, BMS, TPMS, EPB, SAS, injector coding, ABS bleeding, and other procedures available for specific vehicles.

Additional functions may be available in the Miscellaneous section. Not every one of the 49 procedures is available in every car.

CAN-FD support

JP V4.0 supports the modern CAN-FD protocol, which is appearing in an increasing number of new Asian cars.

CAN-FD provides higher bandwidth than the classic CAN bus and allows the tester to work with newer electronic architectures.

The current manufacturer’s page declares CAN-FD but does not declare DoIP or J2534 Pass-Thru for JP V4.0.

AutoVIN – automatic vehicle identification

The AutoVIN function allows automatic reading of the VIN number and recognition of the vehicle in compatible models.

If AutoVIN does not recognize the car, the vehicle can be selected manually. The manufacturer notes that the lack of automatic identification does not automatically mean a lack of diagnostic support.

Full 10 OBDII / EOBD / JOBD modes

JP V4.0 supports all 10 standard OBDII diagnostic modes for compatible vehicles from 1996 onwards.

• Read Codes,
• Erase Codes,
• I/M Readiness,
• Live Data,
• Freeze Frame,
• Vehicle Information,
• O2 Monitor Test,
• On-Board Monitor Test,
• EVAP System Test,
• Pending Codes.

Supported standards include OBDII, EOBD, JOBD, KOBD, CAN, and CAN-FD in compatible vehicles.

Lifetime free Wi-Fi updates

The manufacturer provides lifetime free software updates for JP V4.0.

Updates are delivered wirelessly via Wi-Fi. The manufacturer declares no mandatory annual subscriptions, renewal fees, paid unlocks, or paywalls.

Updates may add new models, communication protocols, active tests, and extensions of coding and service functions.

15 language versions, including Polish

JP V4.0 supports 15 languages:

• Polish,
• English,
• German,
• French,
• Dutch,
• Spanish,
• Czech,
• Swedish,
• Russian,
• Hungarian,
• Norwegian,
• Portuguese,
• Italian,
• Danish,
• Finnish.

Diagnostic history and reports

• quick access to previously diagnosed vehicles and systems,
• saving diagnostic reports,
• sharing reports with clients or colleagues,
• printing data when the device is connected to a Windows computer via USB,
• Feedback function allowing reporting issues to the iCarsoft technical team.

Technical specifications

• Operating system: Android
• Processor: Quad-Core 1.3 GHz
• Internal memory: 64 GB
• Screen: 5″ LCD, capacitive touchscreen
• Resolution: 854 × 490 px
• Connectivity: USB 2.0 / Wi-Fi 2.4 GHz / OBDII
• Power supply from the vehicle: 9–18 V
• Operating current: ≤500 mA
• Battery: 3.7 V / 5000 mAh / 18.5 Wh
• Operating time: about 6 hours of continuous use
• USB Type-C input: 5 V / 2 A
• Power consumption: about 500 mA at 3.7 V with LCD and Wi-Fi on
• Operating temperature: 0–50°C
• Storage temperature: –20–70°C
• Operating humidity: 5–95%, non-condensing
• Dimensions: 200 × 116 × 30.2 mm
• Net weight: about 380 g

Supported communication protocols

• ISO 9141-2,
• ISO 14230-2,
• ISO 15765,
• K-Line and L-Line,
• Flashing Code,
• SAE J1850 VPW,
• SAE J1850 PWM,
• ISO 11898 – High-Speed, Medium-Speed, Low-Speed, and Single-Wire CAN,
• CAN-FD,
• SAE J2610,
• GM UART,
• UART Echo Byte Protocol,
• Honda Diag-H Protocol,
• TP2.0,
• TP1.6.

USB-C charging

JP V4.0 can be charged using a standard USB-C charger. The manufacturer recommends a power supply of 5 V / 2 A.

The manufacturer informs that a separate wall charger is not included to limit additional electronic waste. The device can also be charged from a computer's USB port.

JP V4.0 vs. JP V2.0 and JP V3.0

JP V4.0 is the current flagship model of the JP series. All three generations cover the same 16 Asian brands but differ in functionality and hardware.

• JP V2.0 – 4″ screen, physical buttons, full system diagnostics, no full bi-directional control, and 40 advanced service functions.
• JP V3.0 – 4″ screen, physical buttons, full active tests, 40 advanced service functions, and USB updates.
• JP V4.0 – 5″ touchscreen, Android, 64 GB memory, Wi-Fi updates, and additionally ECU coding for selected Hyundai / KIA / Mazda / Subaru.

Who is iCarsoft JP V4.0 intended for?

• for owners of Japanese and Korean cars,
• for independent workshops specializing in Asian cars,
• for professional mechanics,
• for users requiring full diagnostics of all systems,
• for workshops performing active tests and advanced service functions,
• for users needing coding for selected Hyundai / KIA / Mazda / Subaru,
• for demanding private users.

Why choose iCarsoft JP V4.0?

iCarsoft JP V4.0 is the most advanced tester in the JP series. It combines full diagnostics of 16 Asian brands with 22+ active tests, 49 service functions, ECU coding for selected Hyundai / KIA / Mazda / Subaru, CAN-FD, and AutoVIN.

The 5-inch touchscreen with Android, 64 GB memory, 5000 mAh battery, and lifetime Wi-Fi updates provide convenient and fast operation in the workshop.

JP V4.0 is particularly a good choice for workshops servicing Japanese and Korean cars that need functions beyond standard fault reading and clearing.

Important information regarding compatibility

JP V4.0 is designed for 16 Asian brands listed by the manufacturer. The range of diagnostics, active tests, ECU coding, and service functions depends on the specific model, year, target market, and controller version.

Not every one of the 49 service functions or 22+ active tests is available in every car.

ECU coding is currently declared only for parts of Hyundai, KIA, Mazda, and Subaru vehicles and should not be equated with full online programming of all controllers.

The current manufacturer’s page declares CAN-FD but does not declare DoIP or J2534 Pass-Thru for JP V4.0.

Before purchasing for a specific car, we recommend checking compatibility by VIN number.