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AUTOOL OBD2 Breakout Box Protocol Detector Upgraded Version
US$109.00
Key Features
- Live Voltage Display
- Power LED Check
- Full 16-Pin Access
- Live Voltage Display: The screen shows OBD2 interface voltage in real time for faster connector checks.
- Power LED Check: LED indicators quickly show whether OBD2 power and ground are normal before deeper testing.
- Full 16-Pin Access: Full OBD2 pin breakout supports follow-up testing with a multimeter, oscilloscope, or diagnostic tool.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL OBD2 Breakout Box
Product Overview
The AUTOOL OBD2 Protocol Checker Automotive Breakout Box Upgraded Version is an automotive diagnostic connector detector for OBD2 diagnostic link connectors. It provides easy access to the OBDII connector, real-time OBD2 interface voltage display, LED indicators for power, ground and communication signal monitoring, and 16-pin breakout access for safer protocol, power, ground and signal testing.
OBD Voltage Display LED Indicator 16-Pin OBD Interface 45cm Extension Cable
DC 8V-16VWorking Voltage
2.0ARated Load
45cmTPU Cable
3 YearsWarranty
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Click to enlargeKey Features
Key Features
The upgraded OBD2 breakout box helps technicians monitor OBD2 power, ground, communication pins and voltage display while connecting diagnostic instruments, multimeters, oscilloscopes or ECU backup power more conveniently.
OBD Voltage Display
The built-in display quickly measures and shows OBDII interface voltage, helping users check whether the OBD2 connector voltage is normal.
LED Indicator Light
LED indicators help show vehicle OBD2 power, ground and communication signal status. Red indicates pin 16 power, green indicates pin 4 / 5 ground, and yellow indicates communication signal activity.
16-Pin Input Jack
The built-in input jack fully emulates the OBDII 16-pin layout and can be used with a 4mm banana plug, multimeter or oscilloscope for pin-level testing.
Diagnostic Instrument Interface
When the diagnostic instrument communicates with the vehicle, the breakout box allows quick access to the OBD2 16 pins for monitoring and diagnosis.
DC Power Jack
The DC interface can connect to a 12V backup battery, helping supply temporary ECU power and support battery replacement or ECU power maintenance scenarios.
45cm TPU Extension Cable
The 45cm TPU cable is designed with high elasticity, high flexibility and high strength for easier use around vehicle OBD2 ports.
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Click to enlargeSpecifications
Upgraded Version Specifications
Confirm the upgraded version voltage range, load, cable length, size, interface functions, LED indicator, voltage display and safety limits before operation.
| Product And Interface | |
| Product | AUTOOL OBD2 Breakout Box Protocol Detector Upgraded Version |
| Diagnostic Port | OBD II |
| Function | OBD2 protocol, power, ground, voltage and signal monitoring through breakout access |
| Connector | 16-pin OBD interface with built-in input jack |
| Multimeter / Oscilloscope Testing | Supported through the 16-pin input jack and 4mm banana plug-compatible access |
| Electrical And Size | |
| Working Voltage | DC 8V-16V |
| Rated Load | 2.0A specification shown in the parameter image |
| Safety Load Note | Do not connect an external load device exceeding 1A during operation, following the original safety warning |
| Operating Temperature | -20°C-70°C / -4°F-158°F |
| OBD II Extension Cable Length | 45cm |
| Main Size | 147mm × 50mm × 35mm |
| Side Profile | 40mm × 24mm |
| Connector Width | 24mm |
| Upgraded Version Functions | |
| Voltage Display | Yes |
| LED Indicator | Yes |
| Power Cable | Yes |
| 120Ω Series Resistor Mode | No; this is supported by the Premium Version |
| Warranty | 3-year warranty for eligible non-human damage cases and lifetime maintenance support |
| Product Structure | |
| Structure Overview | The breakout box fully emulates the OBD2 interface and exposes the key 16-pin connector positions, making it easier to monitor power, ground, CAN, K-line, L-line and custom pins during vehicle diagnosis. |
| Pin 4 | Body Ground |
| Pin 5 | Signal Ground |
| Pin 6 | CAN High |
| Pin 14 | CAN Low |
| Pin 7 | K-Line |
| Pin 15 | L-Line |
| Pin 16 | Battery Positive |
Click to enlargeProduct And Interface
ProductAUTOOL OBD2 Breakout Box Protocol Detector Upgraded Version
Diagnostic PortOBD II
FunctionOBD2 protocol, power, ground, voltage and signal monitoring through breakout access
Connector16-pin OBD interface with built-in input jack
Multimeter / Oscilloscope TestingSupported through the 16-pin input jack and 4mm banana plug-compatible access
Electrical And Size
Working VoltageDC 8V-16V
Rated Load2.0A specification shown in the parameter image
Safety Load NoteDo not connect an external load device exceeding 1A during operation, following the original safety warning
Operating Temperature-20°C-70°C / -4°F-158°F
OBD II Extension Cable Length45cm
Main Size147mm × 50mm × 35mm
Side Profile40mm × 24mm
Connector Width24mm
Upgraded Version Functions
Voltage DisplayYes
LED IndicatorYes
Power CableYes
120Ω Series Resistor ModeNo; this is supported by the Premium Version
Warranty3-year warranty for eligible non-human damage cases and lifetime maintenance support
Product Structure
Structure OverviewThe breakout box fully emulates the OBD2 interface and exposes the key 16-pin connector positions, making it easier to monitor power, ground, CAN, K-line, L-line and custom pins during vehicle diagnosis.
Pin 4Body Ground
Pin 5Signal Ground
Pin 6CAN High
Pin 14CAN Low
Pin 7K-Line
Pin 15L-Line
Pin 16Battery Positive
Product Comparison
Product Comparison
Compare the Basic, Upgraded and Premium versions before choosing the right OBD2 breakout box for voltage display, LED status monitoring, power cable support and 120Ω series resistor mode.
Basic VersionSuitable for simple protocol, power, ground, 16-pin access and built-in input jack testing; no voltage display, LED indicator, power cable or 120Ω mode
Upgraded VersionAdds OBD voltage display, LED indicator and power cable; working voltage is DC 8V-16V; does not support 120Ω series resistor mode
Premium VersionAdds 120Ω series resistor mode and supports a wider DC 6V-30V working voltage range
Decision CheckCompare voltage display, LED indicator, power cable, 120Ω mode, working voltage range, 45cm cable, load, and OBD2 pin access needs before ordering
Click to enlargeManual And Downloads
Manual And Downloads
Download the OBDII Protocol Detector Breakout Box user manual for interface, operation, pin access and safety instructions.
Click to enlargeOBDII Protocol Detector Breakout Box User Manual
Open the PDF manual for the upgraded version setup, interface description, diagnostic access, and safe-use guidance.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store before ordering if you need to confirm Basic / Upgraded / Premium version differences, OBD2 pin access, DC power jack use, load limits, or accessory compatibility.
Click to enlargeWhat Is In The Box
What Is In The Box
The Packing List module uses only the most relevant package image. Review the included OBDII breakout box, test leads, DC / power cable accessories and manual before ordering.
Main UnitOBDII Protocol Detector Breakout Box
Extension Cable45cm OBD II extension cable
Test LeadsMultiple color test leads shown in the package image
Power CableBattery / DC power cable accessories shown in the package image
ManualUser manual
NoteConfirm included accessories according to the product option and package image
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Before You Order And Use
Before You Order And Use
This product directly connects to the vehicle data link. Read the safety notes before using jumpers, load devices, multimeters, oscilloscopes or ECU backup power connections.
Warm Tips And Safety Notes
- This product directly connects to the vehicle data link.
- Improper use may damage the vehicle data communication system, related circuits, or systems.
- When you are not sure whether your operation will cause problems, stop using this product immediately.
- When you are not sure about the electrical circuit on the car, do not use a jumper to short-circuit the input jack of this product.
- Do not use this product to connect a load device with power exceeding 1 ampere.
- Do not directly short-circuit pin 16, pin 4, and pin 5 of this product.
- Although the product specification lists 2.0A load, follow the safety warning and avoid connecting external load devices exceeding 1A during operation.
- Use a multimeter or oscilloscope only when you clearly understand the vehicle circuit and OBD2 pin function.
Questions And Answers
These answers cover OBD2 breakout box use, Basic / Upgraded / Premium version differences, 120Ω mode, multimeter / oscilloscope access, LED indicators, ECU backup power and safe operation limits.
An OBD2 breakout box provides access to the OBD2 diagnostic link connector so users can monitor power, ground, protocol signals and voltage, while also making it easier to connect a diagnostic tool, multimeter or oscilloscope to the 16 OBD2 pins.
The Upgraded Version adds OBD voltage display, LED indicator and power cable support. The Basic Version is mainly for basic protocol, power, ground, 16-pin access and built-in input jack testing without these upgraded display and indicator functions.
No. The Upgraded Version does not support 120Ω series resistor mode. The comparison chart identifies this function as a Premium Version feature.
Yes. The built-in input jack fully emulates the 16-pin OBDII layout and can be used with a 4mm banana plug, multimeter or oscilloscope when you understand the vehicle circuit and pin function.
The red indicator shows whether pin 16 power supply is normal. The green indicators show whether pin 4 and pin 5 ground are normal. The yellow indicators show whether related communication pins have signal waveform activity.
Yes. The DC power jack can connect to a 12V backup battery to provide temporary ECU power support during battery replacement or related service work.
Do not directly short-circuit pin 16, pin 4 or pin 5. Do not use a jumper to short-circuit the input jack if you are not sure about the vehicle electrical circuit. Do not connect external load devices exceeding 1A, even though the product specification image lists a 2.0A load rating.
The OBD2 Breakout Box can be adapted to vehicles with an OBD2 interface and is designed for OBDII diagnostic link connector access.
Warranty And Contact
Warranty And Contact
For product support, Basic / Upgraded / Premium version selection, OBD2 pin access, LED indicator logic, voltage display, DC backup power use, load limits, manual support, or accessory confirmation, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help choosing the right OBD2 breakout box version, confirming whether 120Ω mode is required, checking multimeter / oscilloscope access, understanding LED indicators, or confirming safe ECU backup power operation.
- 3-year warranty for eligible non-human damage cases
- Lifetime maintenance support
- Basic / Upgraded / Premium version selection
- OBD2 pin access, voltage display, LED indicator and DC power jack support
- Safety confirmation for load devices, jumpers, and pin short-circuit risk
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