AUTOOL Basic OBD2 Breakout Box 16-Pin with 4mm Test Jacks

AUTOOL Basic OBD2 Breakout Box – 16-Pin Diagnostic Test Access

AUTOOL Basic OBD2 Breakout Box 16-Pin Diagnostic Test Adapter

The AUTOOL Basic OBD2 Breakout Box provides direct access to all 16 pins of a vehicle’s OBD2 diagnostic connector while allowing a compatible scan tool to remain inline. Designed for professional automotive electrical and network testing, it provides accessible 4 mm test points for connecting a multimeter, oscilloscope or compatible leads. A flexible 45 cm TPU extension cable improves access around the DLC, while the DC 8–30 V input supports approved temporary ECU backup procedures.

AUTOOL Basic OBD2 Breakout Box 16-Pin Diagnostic Test Adapter

Main Features

Inline 16-Pin OBD2 Access – Connects between the vehicle DLC and a compatible diagnostic scanner, keeping the scan tool inline while providing convenient access to all 16 OBD2 pins for professional circuit testing.
External 4 mm Test Jack Access – Provides accessible pin-level test points for compatible 4 mm leads, allowing technicians to connect a multimeter, oscilloscope or other suitable external test equipment.
Protocol Signal Test Access – Exposes relevant diagnostic connector pins for observing communication activity and investigating vehicle network signals using suitable external measuring equipment.
Power and Ground Circuit Access – Provides direct access to OBD2 power and ground pins for checking supply voltage, voltage drop and ground circuit condition with an appropriate external meter.
DC 8–30 V External Power Input – Supports an external DC 8–30 V power supply for approved temporary ECU backup procedures when vehicle compatibility, circuit polarity and the correct service procedure have been confirmed.
45 cm Flexible TPU Extension Cable – Uses a flexible thermoplastic polyurethane cable to move the breakout point away from the vehicle diagnostic socket, providing easier access during workshop testing and fault diagnosis.
Passive Diagnostic Test Design – Provides direct pin access without built-in voltage measurement or signal interpretation, allowing technicians to perform testing with their preferred multimeter, oscilloscope or compatible diagnostic equipment.
Inline Communication Comparison – Allows technicians to compare scanner communication with the breakout box connected inline against a direct scan-tool connection when investigating diagnostic communication issues.
Controlled Pin-Level Circuit Testing – Supports structured electrical diagnosis using vehicle-specific wiring diagrams and approved testing procedures, helping technicians safely investigate individual DLC circuits without unnecessary connector probing.
Professional Automotive Diagnostic Applications – Suitable for qualified technicians performing OBD2 connector checks, power and ground testing, communication signal investigation and other pin-level automotive electrical diagnostic procedures.
3-Year Main Unit Warranty – The AUTOOL Basic OBD2 Breakout Box main unit is covered by a 3-year warranty, while standard accessories are supported by a 1-year warranty.

Package Includes

1 × AUTOOL Basic OBD2 Breakout Box
1 × 45 cm OBD2 Diagnostic Connection Cable
1 × Compatible test accessories supplied with the selected package
1 × User Manual

AUTOOL Basic OBD2 Breakout Box Functions

16-Pin OBD2 Access – Provides access to all DLC pins for circuit testing.
Inline Scan Tool Connection – Keeps a compatible diagnostic scanner connected during testing.
4 mm Test Jack Access – Supports compatible multimeter, oscilloscope and test leads.
DC 8–30 V Input – Supports approved temporary ECU backup procedures.
Power & Ground Testing Access – Provides pin access for external electrical measurements
Protocol Signal Access – Allows external testing of relevant communication circuits.
45 cm TPU Cable – Flexible extension improves access around the vehicle DLC.
Passive Basic Design – No built-in voltage display or LED indicators.
Professional Workshop Use – Suitable for qualified automotive electrical diagnosis.

AUTOOL OBD2 breakout box with 4 mm test jack access

AUTOOL OBD2 Breakout Box Comparison: Basic vs Upgraded vs Premium

Every AUTOOL OBD2 breakout box connects between the vehicle's OBD2 port and your scan tool, giving 4 mm test access to all 16 pins while the scan tool stays connected. All three let you check power, ground and communication lines with your own meter or oscilloscope. Step up for a live voltage display and status LEDs on the Upgraded, or a 6–30V working range and switchable 120Ω CAN resistor mode on the Premium.

Compare features	AUTOOL BasicPassive 16-pin accessView Basic	AUTOOL Upgraded12V, voltage display & LEDsView Upgraded	Most capable AUTOOL Premium12V/24V, display & 120Ω modeView Premium
Best for	Technicians who test with their own meter or oscilloscope	Quick power, ground and communication checks on 12V cars	Network diagnosis on cars and 24V trucks
Core breakout box functions
Access to all 16 OBD2 pins	✓	✓	✓
Scan tool pass-through Scan tool stays connected while you test	✓	✓	✓
4 mm test jacks For multimeters, oscilloscopes & test leads	✓	✓	✓
Power, ground & communication line access	✓	✓	✓
External power input Temporary ECU power during approved procedures	✓	✓	✓
Voltage, display & indicators
Working voltage	DC 8–30V	DC 8–16V	DC 6–30V
Live voltage display	–	✓ Selected pin	✓ Selected pin
LED status indicators	–	✓ Power, ground & comms	✓
Switchable 120Ω CAN resistor mode	–	–	✓
Cable, ratings & ownership
Power cable included	–	✓	✓
Diagnostic cable	45 cm TPU	45 cm TPU	45 cm TPU
Load rating External loads must not exceed 1 A	2.0 A rated	2.0 A rated	2.0 A rated
Operating temperature	-20 to 70 °C	-20 to 70 °C	-20 to 70 °C
Warranty	3 years main unit	3 years main unit	3 years main unit

AUTOOL OBD2 breakout boxes are test access tools, not scan tools. Diagnosis is done with your own scan tool, multimeter or oscilloscope. LEDs are status indicators only, and the 120Ω mode should only be used where the vehicle's network test procedure calls for it.

Comparison tables are for reference only and based on AUTOOL specifications. Refer to each product page or contact us for more information.

AUTOOL Basic OBD2 Breakout Box Technical Specifications

Diagnostic Port: OBD2

Working Voltage: DC 8–30 V

Load: 2.0 A rated; external load must not exceed 1 A

Operating Temperature: -20°C to 70°C (-4°F to 158°F)

OBD2 Extension Cable Length: 45 cm

OBD Voltage Display: No

LED Indicator Light: No

Power Cable: No

Built-in Input Jack: Yes

Protocol Signal Test Access: Yes

Power Detection: Yes

Ground Circuit Detection: Yes

16-Pin OBD Interface: Yes

120 Ω Series Resistor Mode: No

AUTOOL Basic OBD2 Breakout Box 16-pin diagnostic adapter

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