Airbag control unit with part number P56043703AF

What does the airbag control unit P56043703AF do?

The airbag control unit P56043703AF is the central control unit of the restraint system (SRS) for Dodge. It evaluates the signals from the crash sensors and decides in the event of an accident on the triggering of airbags and seatbelt pretensioners. After an accident, it stores crash data and locks itself.

The decision is made within milliseconds. The unit also checks its own system constantly so that faults are noticed early.

If the control unit detects a fault, it switches on the airbag warning light in the instrument cluster and keeps the fault in memory.

Why does the control unit P56043703AF fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; an ordinary diagnostic tool cannot delete it. Other causes come into consideration: aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data stays in the unit until it is removed. Airbag24 deletes it during the repair. However, crash data alone does not answer the question of the cause.

The other causes concern the electronics themselves. Components age, solder joints can become brittle, and moisture promotes corrosion at plugs. Voltage spikes arise, for example, from a weak battery or when jump-starting.

How can you tell that the P56043703AF is defective?

The P56043703AF shows a defect when the airbag warning light in the instrument cluster is on permanently or intermittently. Fault messages in the instrument cluster, a missing connection from the diagnostic tool and a fault memory that cannot be cleared are also typical.

The signs in detail:

• Airbag warning light in the instrument cluster, permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool has no connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly not trigger. Take the light seriously and have it checked.

Which vehicles is the P56043703AF fitted in?

The control unit P56043703AF is fitted in these vehicles: Dodge Ram DR/DH/D1/DC/DM Facelift (2006-2009) and DR/DH/D1/DC/DM (2002-2006).

Below you will find the vehicles on record for this part number.

• Dodge Ram DR/DH/D1/DC/DM Facelift (2006-2009)
• Dodge Ram DR/DH/D1/DC/DM (2002-2006)

Compare the part number on the label of the removed unit with this page, so that you know it is the right unit; that is all it establishes. Have the fault memory read out in advance, because only the log shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the P56043703AF work?

First the fault memory is read out, and you enclose the log with the unit. Then you disconnect the battery and only then remove the control unit. You then create a repair order online and send in the well-packed unit. Airbag24 generally needs 3–4 working days to process it.

Airbag24 examines the unit on the test bench and replaces defective components. The stored crash data is then deleted and a function test is carried out.

The unit then returns 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 P56043703AF get to Airbag24?

You send the control unit P56043703AF as a parcel or book a UPS collection for an extra charge. After the repair, the unit is sent back to you by UPS. The printed repair order goes into the parcel, and the unit is packed shockproof.

Padding in the box prevents the unit from slipping during transport.