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B1332

B1332

Electric detonator 1, open circuit





1. Make a note of the diagnostic trouble code and then clear it. Switch the ignition off and on again, wait for at least 40 seconds with the ignition switched on.

Check to see if the diagnostic trouble code returns.

If it does, it is a permanent fault. Proceed to point 2.

If it does not, the fault is intermittent.

Leave the ignition switched on and turn the steering wheel. Jiggle the connectors and wiring to check for an open circuit/loose contact. Note whether the SRS lamp starts to flash again. If it does, check whether the diagnostic trouble code recurs.

2. Unscrew the steering wheel airbag and unplug the connector at the back of the airbag.


Connect reference resistor 84 71 153 to the connector.

On cars with a passenger airbag, remove the glove box, unplug the connector on the underside of the passenger airbag and connect reference resistor 84 71 153 to the connector.

Switch on the ignition and clear the diagnostic trouble code. Switch the ignition off and on again, wait for at least 40 seconds and then check to see whether the diagnostic trouble code recurs.

If the diagnositc trouble code recurs, proceed to point 3.

If the diagnostic trouble code has gone, the fault is in the steering wheel airbag. Switch off the ignition and carry out a double check by connecting the airbag. Switch on the ignition, wait for at least 40 seconds and then check to see whether the diagnostic trouble code recurs (the airbag may have been poorly connected).

If it does, switch off the ignition and change the steering wheel airbag. Switch on the ignition and clear the diagnostic trouble code. Switch the ignition off and on again, wait for at least 40 seconds and check to see whether the diagnostic trouble code recurs.

3. Switch off the ignition and unplug the connector at the control module (331). Check pins 14 and 16 for open circuit/contact pin slide-out.


Close the connector, switch on the ignition and clear the diagnostic trouble code. Switch off the ignition and switch it on again, wait for at least 40 seconds and then check to see whether the diagnostic trouble code recurs.




If the diagnostic trouble code has gone, the connector was at fault.

If the diagnositc trouble code recurs, proceed to point 4.

4. Switch off the ignition and open connector H2-52. Check the contact pins and sockets for open circuit/slide-out.


Close the connector, switch on the ignition and clear the diagnostic trouble code. Switch off the ignition and switch it on again, wait for at least 40 seconds and then check to see whether the diagnostic trouble code recurs. If the diagnostic trouble code has gone, the connector was at fault. If the diagnostic trouble code recurs, proceed to point 5.

5. Switch off the ignition and open connector H2-52. Remove the reference resistor from the steering wheel airbag connector. Change the contact roller (coil spring), close the connector and reconnect the reference resistor.


Switch on the ignition and clear the diagnostic trouble code. Switch the ignition off and on again. Wait for at least 40 seconds and then check to see whether the diagnostic trouble code has recurred.

If the diagnostic trouble code does not recur, the fault was in the contact roller (coil spring).

If the diagnostic trouble code recurs, check the wiring by connecting a BOB to the control module's connector and taking a resistance reading across pins 14 and 16.


Change the wiring if the resistance is high.

If the resistance is 2-3 ohms, plug in the connector, switch on the ignition and clear the diagnostic trouble code. Switch the ignition off and then on again. Wait for at least 40 seconds and then check to see whether the diagnostic trouble code recurs.



Important

Check that no other diagnostic trouble codes have been generated. The diagnostic trouble code for an open circuit prevents the control module from continuing diagnosis on the detonator circuits.


If the diagnostic trouble code for an open circuit recurs, proceed to .