Air Bag Systems: Testing and Inspection

690101 Airbag Diagnosis

Tools







Airbag diagnosis

1. Function test on airbag system:
1.1 Connect and switch on the PIWIS tester 9718.
1.2 Switch on ignition.
1.3 Establish communication with the airbag control module.
1.4 Read out fault memory: No fault stored.
1.5 Select Drive link test menu.
1.6 Read out fault memory for all control units and erase if necessary.
1.7 Remove ignition key. Disconnect battery. Route or isolate the ground strap so that all contact with a ground carrier (e.g. body) is avoided.

ATTENTION:
Danger of injury and material damage if airbag units are not handled correctly.







- Always observe the safety regulations for handling airbag units
- After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.

2. Simulating the fault:

NOTE: To check the operation of the airbag system, a plug connection is disconnected from an airbag unit. A fault code - Static fault - must then be stored in the Porsche System Tester.

2.1 Simulate the fault using the side airbag, for example. Move seat all the way forward. Switch off ignition, disconnect the battery and wait for 1 minute.
2.2 Unlock and disconnect electric plug for the seat.
2.3 Connect the battery and switch on ignition.
2.4 Read out fault memory. Static fault present.

3. Correcting the fault:
3.1 Switch off ignition, disconnect the battery and wait for 1 minute.
3.2 Insert connector in plug socket until connector is felt to engage.

4. Reading out and deleting faults:

NOTE: Fault memory shows a sporadic fault.

4.1 Connect the battery, switch ignition on and read out the fault memory with the Porsche System Tester.
4.2 Erase fault memory. Carry out work instruction after disconnecting the battery.