Airbag control unit with part number 9X23-14B654-AC

What does the airbag control unit 9X23-14B654-AC do?

The airbag control unit 9X23-14B654-AC is the control unit for the SRS restraint system of Jaguar. It evaluates the crash sensors and decides in a collision which airbags and seatbelt pretensioners are triggered. It also monitors the entire system and reports faults via the airbag warning light.

Monitoring runs without interruption while the vehicle is in operation and also covers the connections to the sensors. This allows the unit to detect even small deviations that matter for the function.

After an accident it stores crash data and locks itself. The repair is the process that lifts this lock.

Why does the control unit 9X23-14B654-AC fail?

The most common cause on the 9X23-14B654-AC is crash data stored after an accident, even without a triggered airbag. A standard diagnostic tool cannot erase it. Aged components, cold solder joints, moisture at plug connections and voltage spikes also play a role.

Crash data arises even in an impact in which no airbag triggers. It remains in the unit, and a commonly available diagnostic tool does not remove it.

The other causes act over a longer period. Aged electronic components lose reliability, cold solder joints can give way, and moisture and corrosion disturb the contact at the plug connections.

Voltage spikes occur, for example, when the battery is weak or when jump-starting. Such spikes briefly stress the electronics.

How can you tell that the 9X23-14B654-AC is defective?

A defect on the 9X23-14B654-AC shows when the airbag warning light in the instrument cluster is on permanently or intermittently, an error message appears, the diagnostic tool cannot make contact with the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then possibly fail to deploy.

The warning light reports the fault directly in the driver's field of view. An error message in the instrument cluster additionally shows that the system has detected something, so the indicator is the first sign.

If no connection to the diagnostic tool can be made, the fault may lie in the control unit itself or in the line to it. Only the read-out shows which case applies.

Which vehicles is the 9X23-14B654-AC fitted in?

Which models are affected is decided by the part number on the unit. The airbag control unit 9X23-14B654-AC is fitted in these vehicles from Jaguar: Jaguar XF X250 Facelift (2011-2015) and X250 (2008-2011).

The affected models are listed below:

• Jaguar XF X250 Facelift (2011-2015)
• Jaguar XF X250 (2008-2011)

Before you remove the unit, compare its part number with this page. That only confirms that it is the right unit. A statement about the condition comes only from the fault memory you have read out: it shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 9X23-14D374-AD, CX23-14D374-AD, CX23-14D374-AE.

How does the repair of the 9X23-14B654-AC work?

Above all, have the fault memory of the 9X23-14B654-AC read out and attach the log. Then disconnect the battery, remove the control unit and create the repair order online. For checking, repairing and testing, Airbag24 usually needs 3–4 working days.

You pack the unit well and send it in. At ours it is first checked on the test bench. Defective components are repaired, stored crash data is erased and the unit is finally tested; afterwards your own unit goes back to you.

Our repairs come with 2 years' statutory liability for defects. 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.

How does the control unit 9X23-14B654-AC get to Airbag24?

You send the control unit 9X23-14B654-AC to Airbag24 as a parcel, or have it collected by UPS for an extra charge. After the repair it comes back to you via UPS.

The printed repair order belongs in the parcel, and the control unit must be packed shock-proof.