B1228

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Diagnostic trouble code B1228 - Lamp in SRS symbol faulty, open circuit in cable assembly or short circuit to ground.

The lamp is connected to pin 7 in the connector. Voltage feed to the SRS lamp and all pilot and warning lamps is via fuse 13.

- Switch on the ignition and check the SRS lamp.
All warning lamps except the SRS lamp light:
- Proceed to point 1.
The SRS lamp is lit constantly:
- Proceed to point 4.


1. Take out the.combined instrument and change the SRS lamp. Switch on the ignition.
The lamp should light for 3-4 seconds after the ignition has been switched on.
If the SRS lamp lights:
The SRS lamp was faulty. Return the car to good order.
If the lamp still does not light: Proceed to point 2.

2. Switch off the ignition and disconnect the negative lead from the battery. Undo the bolts securing the steering wheel airbag. Unplug the connector on the back of the airbag and plug reference resistance 84 71 153 into the connector.

On Cars With A Passenger Airbag:
a. Remove the lower cover plate and unplug connector H2-77 to the passenger airbag.
b. Connect reference resistor 84 71 153 to the pin connector using cable assembly 86 11 378.

Proceed to point 3.

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3. Free the SRS control module. Disconnect the SRS control module connector and plug in a BOB.
Detach the combined instrument. Unplug the pictogram connector in the combined instrument.

Connect an ohmmeter between sleeve 8 in the pictogram connector on the cable assembly and contact 7 on the BOB. The ohmmeter should read less than 1 Ohm.
If the reading is OK: Proceed to point 8.
If the reading is incorrect:
Check the lead between sleeve 8 in the pictogram connector and sleeve 7 in the control module connector for breaks and loose connections.
Correct the fault and proceed to point 8.

4. Switch off the ignition and disconnect the negative lead from the battery. Undo the bolts securing the steering wheel airbag. Unplug the connector on the back of the airbag and plug reference resistance 84 71 153 into the connector.

On Cars With A Passenger Airbag.
a. Remove the lower cover plate and unplug connector H2-77 to the passenger airbag.
b. Connect reference resistor 84 71 153 to the male part of the connector using cable assembly 86 11 378.

Proceed to point 5.

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5. Free the SRS control module. Unplug the connector from the SRS control module and plug a BOB into the connector. Refit the battery negative lead and switch on the ignition.
The SRS lamp should not light.
If the lamp does not light: Proceed to point 8.
If the lamp lights: Proceed to point 6.

6. Disconnect grounding connection G2O from the SRS control module.
The SRS lamp should go out.
If the lamp goes out: The fault is in the SRS connector. Replace the connector and associated cable assembly.
Proceed to point 8.
If the lamp does not go out: Reconnect the grounding connector and proceed to point 7.

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7. Take out the combined instrument. Unplug the pictogram connector in the combined instrument. Connect an ohmmeter between contact 7 on the BOB and a safe grounding point.
The ohmmeter should show infinite resistance.
If the reading is OK: Proceed to point 8.
If the reading is incorrect: The cable is shorting to ground between sleeve 7 in the SRS control module connector and the pictogram connector. Investigate the cause and correct the fault.
Proceed to point 8.

8. Switch off the ignition and disconnect the negative lead from the battery. Remove reference resistors and plug in all connectors to their original components. Reconnect the battery negative lead and switch on the ignition.

Erase diagnostic trouble code. Switch off the ignition and switch it back on again, wait for at least 10 seconds.
Check to see if the diagnostic trouble code reappears.
If the diagnostic trouble code reappears: Description of On-Board Diagnostics
If the diagnostic trouble code does not reappear: Return the car to good order.