B1227

Diagnostic trouble code B1227 - Lamp in SRS symbol shorting to positive battery terminal.

�r�:

The SRS lamp does not light for 3 to 4 seconds after the ignition is switched on. The lamp is connected to pin 7 on the control module.

1. Connect ISAT Note the diagnostic trouble code and the type of fault. P=permanent fault. I=intermittent fault.
If the fault is permanent: Proceed to point 3.
If the fault is intermittent: Proceed to point 2.

2. The fault is intermittent. Try to provoke the fault when taking each measurement during fault diagnosis.
Manipulate connectors and leads and turn the steering wheel while taking measurements.

Proceed to point 3.

3. Free the main instrument and change the SRS lamp. Switch on the ignition.
The lamp should light for 3 to 4 seconds after the ignition is switched on.
If the lamp lights: The lamp was faulty. Proceed to point 6
If the lamp does not light: Proceed to 4

.��:

4. Switch off the ignition and disconnect the negative battery lead. Undo the bolts securing the steering wheel airbag. Unplug the connector on the rear of the airbag and connect reference resistor 84 71 153 to the connector.

On Cars With Passenger Airbag:
a. Remove the glove compartment and unplug the connector on the underside of the passenger airbag.
b. Plug in reference resistor 84 71 153 to the connector.

Proceed to point 5.

5. Unplug the SRS control module connector and connect a BOB to the cable assembly. Unplug the connector from the main instrument.
Instruments with a central warning lamp: 55 pin connector.
Instruments without a central warning lamp: 12 pin connector (12P-2) behind the fuel gauge.

Reconnect the negative battery lead and switch on the ignition. Connect a voltmeter between connector 7 on the BOB and a safe grounding point.
The voltmeter should show 0 V.
If the value is OK: Proceed to point 6.
If the value is incorrect:
If the measurement shows battery positive voltage, the fault is in the cable assembly between the main instrument connector and the SRS control module connector. Switch off the ignition and investigate the cause of the fault. Change the cable assembly.
Then proceed to point 6.

��:

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

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