Test point 6

ignition circuits - Check wiring harness and Ignition pills for

Coupled 1/3 or 2/3 squeezed sections and chafing. Replace if required.

Fault code 10 - if no fault can be detected, replace control unit.

Test point 7 Left front sensor

Resistance too high Fault code 11

2. Ohmmeter to terminals 2 and 3 Display: 0...0.5 Q

- Check control unit wiring to front impact sensor connector with Special Tool 9541 and ohmmeter

- If no fault is detected at the front impact sensor and at the wiring, replace control unit.

- Using an ohmmeter, check front impact sensor at connector.

1. Ohmmeter to terminals 1 and 2 Display: 10 kQ

Test point 8 Right front sensor

Resistance too high Fault code 12

- refer to test point 7.

Fault, Fault Code

Possible Causes, Elimination, Remarks

Test point 9 Ignition pill circuit 1

Resistance too high / too low Fault code 21

1. Remove driver airbag - unit.

2. Attach Special Tool 9516 in place of airbag unit.

3. Erase fault memory.

4. Check if fault is still present.

a) Replace airbag unit if the fault is no longer present.

b) If the fault is still present, disconnect the contact unit wiring and attach Special Tool 9516/1.

5. Erase fault memory.

6. Check if fault is still present.

a) Replace contact unit if the fault is no longer displayed.

b) If the fault is still present, check wiring harness for squeezed sections and chafing. Replace if required.

Fault, Fault Code

Possible Causes, Elimination, Remarks c) If no fault Is detected in the wiring harness, replace the control unit.

Test point 10 Ignition pill circuit 2

Resistance too high/too low Fault code 22

Note

Ignition pill circuit 2 at the passenger side airbag is the leftmost of the two circuits.

1. Disconnect plug at passenger side airbag unit.

2. Attach Special Tool 9516.

3. Erase the fault memory.

4. Check if fault is still present.

a) If the faut is no longer present, replace passenger side airbag unit.

b) If the fault is still present, check wiring harness for squeezed sections and chafing. Replace if required.

c) If no fault is detected in the wiring harness, replace the control unit.

Test point 11

Ignition pill circuit 3 Resistance too high/too low Fault code 23

Ignition pill circuit 3 at the passenger-side airbag is the rightmost of the two circuits.

- refer to test point 10.

Test point 12

Airbag warning light Signal implausible Fault code 30

Check warning lamp, replace if required.

Check wire from control unit to instrument cluster or to diagnosis socket, respectively, for short to positive terminal.

■ Check instrument cluster.

Test point 13 Control unit defective

- Replace control unit. Note

This fault message may display several fault codes: 31, 40 to 47, 50 to 54 and 60 to 62.

Fault, Fault Code Possible Causes, Elimination, Remarks

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