Air Bag Diagnosis

Airbag Diagnosis

1. Function test of the airbag system:
a. Connect and switch on the Porsche System Tester.
b. Switch ignition on.
c. Establish communication with the airbag control module.
d. Read out fault memory: no fault stored.
e. Menu - Perform a drive-link test.

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

f. Read out the fault memory for all control modules and erase it if necessary.
g. Switch off ignition and disconnect battery.

CAUTION:
- Danger of injury and damage to property as a result of incorrect handling of airbag units.
- Always observe the safety regulations for handling airbag units.
- Remove ignition key. Disconnect the battery and cover battery terminal.
- After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.

2. Simulate the fault:
Simulate the fault using the side airbag, for example. Move seat all the way forward.

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.







a. Fold up the retainer -A- on the socket housing -1-, press lock -B- on the airbag plug -2- and pull out the plug -C-.
b. Connect the battery and switch on ignition.
c. Read out fault memory. Static fault present.

3. Correct the fault:







a. Switch off ignition, disconnect the battery and wait for 1 minute.
b. Fold up the retainer -A- on the socket housing -1- and insert -B- plug -2- until the plug engages perceptibly.

4. Read out and delete faults:
a. Connect the battery, switch ignition on and read out the fault memory with the Porsche System Tester.

NOTE: Fault memory shows a Sporadic fault.

b. Clear fault memory.

Carry out work instruction after disconnecting the battery.