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Diagnostic Trouble Code: B0020
Diagnostic Trouble Code Name: Passenger Frontal Deployment Loop Stage 2
Vehicle Make: Holden
Vehicle Model: Cruze (J300)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
No Serial Data from SDM
Possible Sensor Faults
Body Control Module
Possible Related Diagnostic Trouble Codes
DTCB0012
Circuit / System Description
The air bag sensing and diagnostic module (SDM) sends serial data along the tertiary serial data bus, circuit 774, to the body control module (BCM) and then on to the instrument cluster on the secondary serial data bus, circuit 1061. This is read by the instrument cluster, which displays the status of the SDM on the multifunction display (MFD) and cluster indicator. DTC 12 will set if there is no SDM data message on the bus for more than 10 seconds. The DTC is reset within 10 seconds of the arrival of a SDM data message on the bus. The DTC is logged as a History DTC.
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