TopDiag T400

OBD2 scanner with injector, relay & battery test

Model code: T400 Manufacturer: Jdiagtools

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Description

TopDiag T400 is a dual-system OBD2 scanner with additional workshop tests: battery test, injector test, relay test and sensor signal simulation.

OBD2: Reads and clears generic and manufacturer-specific engine codes (P0/P2/P3/U0, P1/P3/U1, pending and permanent), turns off the check engine light, shows I/M readiness, live data (numeric and graph), freeze frame, O2 sensor test, Mode 6, Mode 8 EVAP test, vehicle information (VIN, CIN, CVN), battery voltage monitoring and a built-in DTC library. It also offers troubleshooting tips, smog check, fuel / performance / engine analysis and data recording with playback and printing.

Supports all OBD2 protocols: ISO 9141-2, SAE J1850 PWM/VPW, ISO 14230-4 KWP2000 and ISO 15765-4 CAN.

Specifications

Product type	Device with pre-installed software (standalone)
For which vehicle	Cars
Price (USD)	$76 – $93
Connection with computer / tablet / phone	USB
Vehicle power supply system	12V
Supported protocols	K-line, KWP2000, SAE J1850, CAN, J1979
Other protocols (details)	ISO 9141-2, ISO 14230-4, ISO 15765-4, SAE J1850 PWM/VPW
Frequency of new updates	Software updates via USB
Menu language	English
Other language (details)	Multi-language menu (see manufacturer)

Supported functions (15)

Actuation

Injector / cylinder test i (Fuel injector inspection (and cleaning) function, as described by JDiag.)

Advanced Diagnostics

O2 sensor data i (O2 sensor data.)
DTC lookup i (Built-in DTC lookup.)
Voltage reading i (Battery / OBD voltage reading.)
Oscilloscope / waveform analysis i (Voltage waveform monitoring.)

Diagnostics

Reading the VIN i (VIN / vehicle information.)
Read fault codes (DTC) i (Generic and pending emission codes.)
Clear fault codes (DTC) i (Turns off the check engine light.)
Live data stream i (Live data stream.)
Freeze frame data i (Freeze frame data.)
I/M readiness monitors i (I/M readiness status.)
EVAP system test i (OBD2 Mode 08 (component test), where supported.)
On-board monitor test (Mode 06) i (On-board monitor test (OBD2 Mode 06).)
ECU information i (Vehicle information (calibration IDs, CVN).)

Reports

Print / share i (Cloud printing of the report.)

Conditions for specific vehicles (1)

Notes added by the manufacturer that apply only to the vehicles listed below — the function itself is supported.

Notes for specific vehicles (all functions)

Alpine (1)

Alpine
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Citroen (1)

Citroen
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Cupra (1)

Cupra
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

DS (1)

DS
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Dacia (1)

Dacia
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Daihatsu (1)

Daihatsu
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Lancia (1)

Lancia
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

MG (1)

MG
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Opel (1)

Opel
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Peugeot (1)

Peugeot
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Ravon (1)

Ravon
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Renault (1)

Renault
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Rover (1)

Rover
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

SEAT (1)

SEAT
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Skoda (1)

Skoda
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

SsangYong (1)

SsangYong
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Vauxhall (1)

Vauxhall
EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Compatibility disclosure

Generic OBD2/EOBD functions on OBD2-compliant cars and light vehicles (JDiag: up to 97% of models; USA 1996+, EU 2001+ petrol and 2004+ diesel). No manufacturer-specific systems (ABS, SRS, transmission) and no service resets. Three-in-one: OBD2 scanner, battery diagnostics and component tests. Relay test, signal output, battery tests and fuel injector cleaning are not covered by function entries (injector inspection is entered as an injector test).

Compatible vehicles (72 makes)

Check if it fits your vehicle:

Abarth (all models)

All models of this make (1996–…)

Acura (all models)

All models of this make (1996–…)

Alfa Romeo (all models)

All models of this make (1996–…)

Alpine (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Aston Martin (all models)

All models of this make (1996–…)

Audi (all models)

All models of this make (1996–…)

BMW (all models)

All models of this make (1996–…)

Bentley (all models)

All models of this make (1996–…)

Bugatti (all models)

All models of this make (1996–…)

Buick (all models)

All models of this make (1996–…)

Cadillac (all models)

All models of this make (1996–…)

Chevrolet (all models)

All models of this make (1996–…)

Chrysler (all models)

All models of this make (1996–…)

Citroen (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Cupra (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

DS (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Dacia (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Daewoo (all models)

All models of this make (1996–…)

Daihatsu (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Dodge (all models)

All models of this make (1996–…)

Ferrari (all models)

All models of this make (1996–…)

Fiat (all models)

All models of this make (1996–…)

Ford (all models)

All models of this make (1996–…)

GMC (all models)

All models of this make (1996–…)

Genesis (all models)

All models of this make (1996–…)

Honda (all models)

All models of this make (1996–…)

Hummer (all models)

All models of this make (1996–…)

Hyundai (all models)

All models of this make (1996–…)

Infiniti (all models)

All models of this make (1996–…)

Isuzu (all models)

All models of this make (1996–…)

Jaguar (all models)

All models of this make (1996–…)

Jeep (all models)

All models of this make (1996–…)

Kia (all models)

All models of this make (1996–…)

Lamborghini (all models)

All models of this make (1996–…)

Lancia (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Land Rover (all models)

All models of this make (1996–…)

Lexus (all models)

All models of this make (1996–…)

Lincoln (all models)

All models of this make (1996–…)

Lotus (all models)

All models of this make (1996–…)

MG (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Maserati (all models)

All models of this make (1996–…)

Mazda (all models)

All models of this make (1996–…)

McLaren (all models)

All models of this make (1996–…)

Mercedes-Benz (all models)

All models of this make (1996–…)

Mercury (all models)

All models of this make (1996–…)

Mini (all models)

All models of this make (1996–…)

Mitsubishi (all models)

All models of this make (1996–…)

Nissan (all models)

All models of this make (1996–…)

Oldsmobile (all models)

All models of this make (1996–…)

Opel (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Peugeot (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Plymouth (all models)

All models of this make (1996–…)

Pontiac (all models)

All models of this make (1996–…)

Porsche (all models)

All models of this make (1996–…)

RAM (all models)

All models of this make (1996–…)

Ravon (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Renault (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Rolls-Royce (all models)

All models of this make (1996–…)

Rover (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

SEAT (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Saab (all models)

All models of this make (1996–…)

Saturn (all models)

All models of this make (1996–…)

Scion (all models)

All models of this make (1996–…)

Skoda (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Smart (all models)

All models of this make (1996–…)

SsangYong (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Subaru (all models)

All models of this make (1996–…)

Suzuki (all models)

All models of this make (1996–…)

Toyota (all models)

All models of this make (1996–…)

Vauxhall (all models)

All models of this make (2001–…) ✎ EU-market vehicles: OBD2/EOBD from 2001 (petrol) and 2004 (diesel).

Volkswagen (all models)

All models of this make (1996–…)

Volvo (all models)

All models of this make (1996–…)

Where to buy

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About the manufacturer: Jdiagtools

JDiag / TopDiag is a diagnostic tool manufacturer based in Shenzhen, China (Longhua District). Under the JDiag brand it makes universal motorcycle diagnostic scanners – handheld M100–M300 and M208 series, the MOTOSYS M10 Bluetooth adapter and the MOTOSYS M400 Android tablets – covering European, Japanese, American, Indian and Chinese motorcycle brands, with built-in battery, injector and relay tests. Under the TopDiag brand it makes OBD2 scanners (T series, M60), TPMS programming tools (PS series), automotive circuit testers (P series), battery testers and jump starters. Products are sold worldwide through the official store jdiagtools.com and distributors.

https://jdiagtools.com/ ↗