Airbag control unit with part number P68003221AC

What does the airbag control unit P68003221AC do?

The airbag control unit P68003221AC controls the restraint system (SRS) for Jeep. It evaluates the crash sensors, determines in a triggering event which airbags and seatbelt pretensioners respond, and checks the system for faults without pause.

Detected faults are shown via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself; this storage is part of the unit's design.

Why does the control unit P68003221AC fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also cause the failure.

The readout of the fault memory is therefore the start of every fault search, because it shows whether such entries are present.

The other causes have different origins. Ageing and corrosion act over time, while voltage spikes, for example during a jump-start, occur very suddenly.

How can you tell that the P68003221AC is defective?

The airbag warning light comes on in the instrument cluster continuously or intermittently, an error message appears there, the diagnostic tool finds no connection to the control unit, or the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then possibly not deploy in an emergency.

Typical signs at a glance:

• airbag warning light in the instrument cluster, continuously or intermittently
• error message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory that cannot be cleared

When you see such findings, act promptly, because the warning light indicates the fault and the vehicle must be checked more closely.

Which vehicles is the P68003221AC fitted in?

The P68003221AC is fitted in these vehicles: Jeep Wrangler JK (2007-2018).

The list shows the vehicles to which Airbag24 assigns this part number.

• Jeep Wrangler JK (2007-2018)

Compare the part number on the label of the removed unit with this page. This tells you that it is the right unit, but not whether it is defective. For that, have the fault memory read out beforehand; then it becomes clear whether the control unit itself is the cause or a plug or cable is affected.

For the same vehicles, we also repair control units with the part numbers 68398609AB, P68003421AB.

How does the repair of the P68003221AC work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit afterwards. Then create a repair order online and send the unit in well packed. At Airbag24, testing, repair and function test usually take 3–4 working days.

Keep to the order, because it protects you during removal.

At Airbag24 the unit is tested on the test bench. Defective components are repaired or replaced, stored crash data is erased and a function test is carried out. Afterwards your own unit is returned 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 P68003221AC get to Airbag24?

You send the unit as a parcel to Airbag24 or book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair. Put the printed repair order into the parcel and pack the unit shockproof.

Make sure the packaging keeps clearance all round the unit, so that nothing presses against the control unit during transport.