01321

01321 - Control Module for Airbags (J234)

01321 - Control Module for Airbags (J234)

Possible Symptoms

• Malfunction Indicator Light (MIL) active

Possible Causes

• When found in Audi A4 (8E): Brake Electronics (Bosch 8.0)
  • Coding of Powertrain Control Modules wrong/incomplete

• When found in Audi A8 (4E) Parking Brake
  • Check Airbag Control Module for DTCs. A faulty Belt Latch (E24) can cause this.

Possible Solutions

• When found in Audi A4 (8E): Brake Electronics (Bosch 8.0)
  • Check Coding of Powertrain Control Modules, especially check the related Airbag 9.41 Adaptation Channels 050 & 051.

01321 - Control Module for Airbags (J234): No Signal/Communication

Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• CAN-Databus Wiring/Connectors from/to Airbag Control Module (J234) faulty
• Fault(s) stored in Airbag Control Module (J234)

Possible Solutions

• Check CAN-Databus Wiring/Connectors from/to Airbag Control Module (J234)
• Check Measuring Value Blocks (MVB)
  • Usually Measuring Value Blocks (MVB) 125+ show the current Communication Status