Airbag Diagnosis

690101 Airbag Diagnosis

Airbag diagnosis
1. Function test of the airbag system:
1.1. Connect and switch on the Porsche System Tester.
1.2. Switch on ignition.
1.3. Establish communication with the airbag control module.
1.4. Read out fault memory: No fault stored.

NOTE:
- When you perform the drive link test:
- The cutoff relay is activated. The cutoff relay must be activated again. To activate the cutoff relay: Press on the colored area of cutoff relay (located in current distributor).
- The hazard warning lights are activated.
- The central locking system is opened.
- Triggering of the airbag units is simulated.

1.5. Menu - Perform a drive-link test.
1.6. Read out fault memory for all control units and erase if necessary.
1.7. Remove ignition key. Disconnect battery . Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) 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. Simulate 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.
2.2. Push down the safety cover on the plug socket -1--arrow A- and hold in this position.
2.3. Open locking mechanism -arrow B- on airbag connector -2- and remove connector -arrow C-.
2.4. Connect the battery and switch on ignition.
2.5. Read out fault memory. Static fault present.

3. Correct the fault:
3.1. Switch off ignition, disconnect the battery and wait for 1 minute.
3.2. Insert connectors -2- on plug socket -1--arrow A- until connectors are felt to engage.







4. Read out and delete 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.