GODIAG GT105 II ECU IMMO Prog AD OBD2 Break Out Box ECU Connector

These breakout boxes and connectors are commonly used by automotive technicians and locksmiths to:

• Power diagnostic/programming tools from a vehicle’s battery during on‑site work or when standard power isn’t available.

• Provide uninterrupted 12 V to ECU and IMMO systems during battery replacement so that data (clock, keys, IMMO info) isn’t lost.

• Short‑circuit or monitor OBD2 signals (PWM, CANH, CANL, K‑Line) for ECU communication testing or wake‑up before programming key/IMMO modules.

• Assist in immobilizer key programming (all‑keys‑lost situations) when paired with key‑programming devices (e.g., Xhorse, VVDI, Autel, CGDI).

 The “II” version adds convenience features like voltage monitoring and key fob battery testing, and it often comes with a jumper cable set for broader ECU connection options.