B1333
Diagnostic trouble code B1333 - Driver airbag, resistance too lowJ��:
1. Connect the 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 at each measuring stage during fault diagnosis.
Manipulate connectors and leads and turn the steering wheel while taking measurements.
NOTE: If no fault can be demonstrated during measuring, change the contact roller. The contact roller is the most common cause of intermittent faults.
Proceed to point 3.
3. 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 4.
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4. Refit 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 for at least 10 seconds with the ignition on.
Check to see if the diagnostic trouble code returns.
If the diagnostic trouble code returns: Proceed to point 6.
If the diagnostic trouble code does not return:
The fault is in the steering wheel airbag. Conduct an extra test as described in point 5.
5. Switch off the ignition and remove the negative lead from the battery. Remove the reference resistor from the steering wheel airbag connector and plug in the airbag.
Replace the negative battery lead and switch on the ignition. Wait for at least 10 seconds with the ignition on.
Check to see if the diagnostic trouble code returns.
If the diagnostic trouble code returns: Switch off the ignition and remove the negative lead from the battery. Change the steering wheel airbag. Then proceed to point 8.
If the diagnostic trouble code does not return: Switch off the ignition and remove the negative battery lead. Unplug the connector from the airbag and refit the reference resistor. Refit the negative battery lead and then proceed to point 6.
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6. Switch off the ignition. Unplug the connector from the SRS control module and connect a BOB to the cable assembly.
Unplug connector H2-52. Connect an ohmmeter between contacts 10 and 11 on the BOB.
The ohmmeter should show infinite resistance.
If the value is OK: Proceed to point 7.
If the value is incorrect: There is a short circuit in the cable assembly between connector H2-52 and the SRS control module connector.
Investigate the cause and change the cable assembly. Then proceed to point 8.
7. Change the contact roller. Install a reference resistor to the steering wheel airbag connector. Plug in connector H2-52 and refit the SRS control module connector.
Switch on the ignition and erase the diagnostic trouble code. Switch off the ignition and switch it back on again. Wait for at least 10 seconds with the ignition on.
Check to see if the diagnostic trouble code returns.
If the diagnostic trouble code returns: Air Bag Control Module
If the diagnostic trouble code does not return:
The fault was in the contact roller. Proceed to point 8.
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8. Switch off the ignition and remove the negative lead from the battery.
Remove the reference resistors and plug in all connectors to their original components. Refit 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 for at least 10 seconds.
Check 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.