B1332
Diagnostic trouble code B1332 - Driver airbag, interruptionP��:
1. Connect the ISAT. Note the diagnostic trouble code. 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 measurements during fault diagnosis.
Manipulate connectors and leads as well as turning the steering wheel while taking measurements.
NOTE: If no fault can be demonstrated while taking measurements, 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 battery negative cable. Unscrew the steering wheel airbag and unplug the connector on the back of the airbag. Plug in reference resistor 84 71 153 to 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 pin connector H2-77 using cable assembly 86 11 378.
Proceed to point 4.
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4. Reconnect the negative battery lead and switch on the ignition. Erase diagnostic trouble code. Switch off the ignition and switch it 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 extra tests as described in point 5.
5. Switch off the ignition and disconnect the negative lead from the battery. Remove the reference resistor from the steering wheel airbag connector and reconnect the airbag.
Reconnect 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. (the airbag may have been badly connected)
If the diagnostic trouble code returns: Change the steering wheel airbag. Then proceed to point 10.
If the diagnostic trouble code does not return: The fault is intermittent. Return to point 2.
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6. Switch off the ignition and unplug the connector from the SRS control module. Check pins 10 and 11 for breaks and bad contacts.
Refit the connector and switch on the ignition. Erase diagnostic trouble code. Switch off the ignition and switch it back on, 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 point7.
If the diagnostic trouble code does not return: The fault was in the connector. Proceed to point 10.
NOTE: If no fault was found in the connector, the fault may be intermittent. Try to provoke any intermittent fault and see if the SRS lamp lights.
7. Switch off the ignition. Unplug connector H2-52 and check pins and sleeves for breaks and bad contacts.
Join the connector. Switch on the ignition and erase the diagnostic trouble code. Switch off the ignition and switch it back on, wait 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 point8.
If the diagnostic trouble code does not return: The fault was in the connector. Proceed to point 10.
NOTE: If no fault was detected in the connector, the fault may be intermittent. Try to provoke any intermittent fault and see if the SRS lamp lights.
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8. Switch off the ignition. Unplug connector H2-52 and remove the reference resistor from the steering wheel airbag connector. Change the contact roller. Join the connector and reconnect the reference resistor.
Switch on the ignition and erase the diagnostic trouble code. Switch off the ignition and switch it back on, 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 9.
If the diagnostic trouble code does not return: The fault was in the contact roller. Proceed to point 10.
9. Switch off the ignition and check the cable assembly by connecting a BOB to the SRS control module connector on the cable assembly. Connect an ohmmeter between contacts 10 and 11.
The ohmmeter should read 3-4 Ohms
If the reading is OK: Proceed to point 10.
If the reading is off: Investigate the cause and change the cable assembly.
Proceed to point 10.
10. 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 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 reappear: Return the car to good order.