T400 is a professional three-in-one automotive diagnostic scanner equipped with an ultra-clear 3.5-inch high-brightness display, integrating OBD II scanning, battery diagnostics, and component testing into one powerful device. It supports over 1,400 special functions, making it perfect for professional workshops, repair technicians, and advanced car enthusiasts looking for a highly capable all-in-one tool.
With an upgraded visualization interface and high-performance processing, T400 delivers faster responses and more accurate diagnostic results across a wide range of vehicle systems.
Full OBD II Diagnostic Capability
T400 supports comprehensive OBD II diagnostics including reading fault codes, clearing DTCs, freeze frame analysis, Mode 6, Mode 8, vehicle information, I/M readiness tests, and real-time data stream monitoring. Its built-in DTC Lookup and cloud printing functions enhance workflow efficiency and provide convenient test report management.
Voltage waveform monitoring and O2 sensor testing provide detailed visibility into engine performance, helping accurately identify intermittent or difficult faults.
Advanced Battery Diagnostic & Testing Functions
The T400 integrates a full battery detection module that supports a wide range of standards including CCA, JIS, GB, SAE, MCA, CA, DIN, IEC, EN, BCI. With a testing range of 20–2000 CCA and support for 10–300 AH batteries, it covers automotive, motorcycle, and light-duty vehicle battery evaluation.
Load test, charge test, and startup test provide insights into battery health, alternator charging performance, and starter system condition.
Component Testing & Professional Workshop Functions
Beyond standard OBD scanning, T400 includes specialized component testing such as:
Fuel injector inspection
Fuel injector cleaning
Relay testing
Signal output
Voltage waveform monitoring
Real-time system monitoring
These advanced features greatly improve diagnostic accuracy, enabling quick identification of component-level faults in modern vehicles.
Key Features
Read & Clear DTC
DTC Lookup
Freeze Data
Real-Time Data Stream
Voltage Waveform Monitoring
Mode 6 / Mode 8
ECU Information
I/M Readiness Test
O2 Sensor Testing
Load Test / Charge Test
Vehicle Startup Test
Battery Diagnostics
Fuel Injector Inspection & Cleaning
Relay Testing
Signal Output
OBD Voltage Detection
Cloud Printing
3.5-inch Extra-Large Display
Product Parameters
Model: T400
Screen: 3.5-inch TFT color display, 480 × 320 resolution
Size: 210 × 121 × 34 mm
Weight: 0.322 kg
Shell Material: ABS
Supply Voltage: 8–24 V
Battery Testing Specifications
CCA Range: 20–2000 CCA
Battery Capacity: 10–300 AH
Supported Battery Standards: CCA, JIS, GB, SAE, MCA, CA, DIN, IEC, EN, BCI
Supported OBD Protocols
ISO9141-2 (5 baud init / 10.4 Kbaud)
SAE J1850 PWM (41.6 Kbaud)
SAE J1850 VPW (10.4 Kbaud)
ISO14230-4 KWP (5 baud init / fast init, 10.4 Kbaud)
ISO15765-4 CAN (11bit / 29bit ID, 500 Kbaud & 250 Kbaud)
Software Update: Supports TYPE-C Port Upgrade
