Genesis G70 IK airbag control unit repair

What is a Genesis G70 IK airbag control unit?

In an emergency, the Genesis G70 IK airbag control unit, as the central control unit of the restraint system (SRS), decides which airbags and seatbelt pretensioners deploy. To do this, it evaluates the signals from the crash sensors within milliseconds. It also monitors the system continuously and indicates faults via the airbag warning light.

In a collision, the sensors report acceleration and direction of impact to the control unit. It classifies the severity of the accident and then enables the firing circuits of the appropriate restraint devices. This unit is installed in the Genesis G70 IK (since 2021).

The control unit is also active without an accident: as soon as the ignition is switched on, it checks its own functions and the connected components. If it detects a deviation, the warning light in the instrument cluster comes on. After an accident, it stores crash data and locks itself.

Why is the Genesis G70 IK airbag control unit defective?

Most often the cause is crash data stored in the Genesis G70 IK airbag control unit after an accident, even if no airbag deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion on connectors, and voltage spikes, for example with a weak battery or when jump-starting.

An ordinary diagnostic tool cannot remove stored crash data. The fault therefore keeps returning, even if nothing unusual can be seen on the vehicle. Other causes develop slowly: contacts oxidise, solder joints fatigue, and at some point the unit reports a fault in its own electronics.

This is indicated when the airbag warning light stays on constantly, the fault memory cannot be cleared or the diagnostic tool cannot establish a connection to the control unit.

Common error codes for Genesis G70 IK airbag control unit repair

With the Genesis G70 IK airbag control unit, the error codes mainly concern faults in the unit itself, stored crash data, the supply voltage and the firing circuits of the airbags. The exact fault is given by the code you read from the fault memory.

The following error codes are known for this vehicle:

• B1620 → Internal fault in the airbag control unit
• B1650 → Crash data stored, first deployment stage only
• B1670 → Frontal crash stored at full stage
• B1651 → Crash data stored, driver airbag deployed
• B1101 → Airbag system supply voltage too high
• B1102 → Airbag system supply voltage too low
• B1346 → Driver airbag: firing circuit resistance too high
• B2613 → Driver airbag circuit faulty

Error codes are read out with a diagnostic tool. However, a single code does not yet prove a defect in the control unit, as connectors, wiring or an airbag module can equally be the cause. Which part is affected is only clarified by the inspection.

What part numbers are available for the Genesis G70 IK airbag control unit repair?

You will find the part number on the label of the control unit; it defines the exact version. Depending on equipment and year of manufacture, the numbers differ within a model series, so it is worth checking the label.

Known part numbers for the Genesis G70 IK are listed here; the list should not be understood as complete.

• 95910-G9300

Compare the number on your unit with this list. The comparison only shows whether you have the matching unit in your hands. Whether it is defective only becomes clear when the fault memory is read out or during the inspection.

The route to repair is short: have the fault memory read out, disconnect the battery and remove the control unit. Then create a repair order online and send the unit to Airbag24. Inspecting, repairing and testing there usually take 3–4 working days. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.