Airbag control unit with part number P68074301AA

What does the airbag control unit P68074301AA do?

The airbag control unit P68074301AA ensures that airbags and seatbelt pretensioners trigger at the right moment in the restraint system (SRS) of Dodge. To do this it evaluates the sensors and monitors the entire system.

It makes the triggering decision within milliseconds. If it detects a fault, it reports this via the airbag warning light.

After an accident the unit stores crash data and locks itself.

Why does the control unit P68074301AA fail?

The most common cause is crash data that an accident has left in the unit, without an airbag having had to trigger. Other causes are ageing of the electronics, cold solder joints, moisture and corrosion at plug connections and voltage spikes.

Crash data stays in the unit, and a standard diagnostic tool cannot deal with it.

Other causes lie in the electronics or at the contacts: components age, solder joints can be cold, and moisture attacks the contacts. Voltage spikes, for example from a weak battery or a jump start, additionally strain the unit.

How can you tell that the P68074301AA is defective?

The warning sign is the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Added to this are fault messages in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared.

Even if the vehicle otherwise seems to run normally, the light can indicate a defect. As long as it persists, airbags and seatbelt pretensioners may not trigger in an emergency.

Where exactly the fault lies is established only by the examination.

Which vehicles is the P68074301AA fitted in?

The P68074301AA is fitted in these vehicles: Dodge Caliber PM (2006-2009) and PM Facelift (2009-2011).

The following models are stored for this part number:

• Dodge Caliber PM (2006-2009)
• Dodge Caliber PM Facelift (2009-2011)

Comparing the part number on the label of the removed unit with this page only confirms that you have removed the correct unit. Having the fault memory read out before you start, by contrast, shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 4672602AB, 4896616AA, 4896616AB, 68148034AA, P04672603AE, P04896621AE.

How does the repair of the P68074301AA work?

You have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Only now create the repair order online and pack the unit for sending.

Defective components are repaired at Airbag24, the crash data is erased and a function test is carried out.

This process usually takes 3–4 working days at Airbag24. 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 P68074301AA get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. After the repair Airbag24 returns the unit to you by UPS.

Enclose the printed repair order in the parcel and pack the unit shock-proof.