B2332
Diagnostic trouble code B2332/Diagnostic trouble code B2337 - Driver airbag, short to ground / Passenger airbag, short to ground.��:
1. Connect ISAT. Note diagnostic trouble code and 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 expose the fault when taking each reading during fault tracing. 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 7.
If the diagnostic trouble code does not return: The fault is in the steering wheel airbag or the passenger airbag (if fitted). 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 connect the steering wheel airbag.
Refit the negative lead to the battery 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, remove the negative lead from the battery and change the steering wheel airbag.
Then proceed to point 11.
If the diagnostic trouble code does not return: If the car is fitted with an airbag on the passenger side, do an extra test as described in point 6.
If the car has no passenger airbag, the fault is intermittent. Return to point 2.
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6. Switch off the ignition and disconnect the negative lead from the battery. Reconnect the reference resistor to the steering wheel airbag connector.
Remove cable assembly 86 11 378 complete with reference resistor from the passenger airbag connector and plug in the passenger airbag.
Refit the negative lead to the battery 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, remove the negative lead from the battery and change the passenger airbag.
Then proceed to point 11.
If the diagnostic trouble code does not return: The fault is intermittent. Return to point 2.
7. Switch off the ignition and remove the reference resistor from the steering wheel airbag connector.
Unplug the connector from the SRS control module and connect a BOB to the cable assembly.
Connect an ohmmeter between contact 10 on the BOB and a safe grounding point. Then connect the ohmmeter between contact 11 on the BOB and a safe grounding point.
In both measurements, the ohmmeter should show infinite resistance.
If the measurement is OK: If the car is equipped-with a passenger airbag, proceed to point 10.
If the car has no passenger airbag, proceed to point 11.
If the measurement is incorrect: Proceed to point 8.
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8. Switch off the ignition and unplug connector H2-52.
Connect an ohmmeter between contact 10 on the BOB and a safe grounding point. Then connect the ohmmeter between contact 11 on the BOB and a safe grounding point. The ohmmeter should show infinite resistance.
If the measurement is OK: Proceed to point 9.
If the measurement is incorrect: If any of the measurements shows low resistance, there is a short to ground on the lead in question between the SRS connector and connector H2-52. Investigate the cause and change the cable assembly. Then proceed to point 11.
9. Connect an ohmmeter between pin 1 in connector H2-52 from the contact roller and a safe grounding point. Then connect the ohmmeter between pin 2 in the connector and a safe grounding point.
The ohmmeter should show infinite resistance.
If the measurement is OK: If the car is fitted with a passenger airbag, proceed to point 10.
If the car has no passenger airbag, proceed to point 11.
If the measurement is incorrect: If any of the measurements shows low resistance, the fault is in the contact roller. Change the contact roller and then proceed to point 11.
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10. Switch off the ignition and remove cable assembly 86 11 378 complete with reference resistor from passenger airbag connector H2-77.
Connect an ohmmeter between contact 13 on the BOB and a safe grounding point. Then connect the ohmmeter between contact 14 on the BOB and a safe grounding point. In both measurements, the ohmmeter should show infinite resistance.
If the measurement is OK: Proceed to point 11.
If the measurement is incorrect: If any of the measurements shows low resistance, there is a short to ground on the lead in question. Investigate the cause and change the cable assembly. Then proceed to point 11.
11. 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 return: Return the car to good order.