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Diagnostic Trouble Code: B0074
Diagnostic Trouble Code Name: Passenger Occupant Classification Sensor
Vehicle Make: Chevrolet
Vehicle Model: Camaro (Fifth Generation)
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:
SIR Serial Communications Fault
Possible Sensor Faults
SDM - Sensing and Diagnostics Module (Airbag Black Box)
Possible Related Diagnostic Trouble Codes
DTC B1103
Circuit / System Description
When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform turn-on test to diagnose critical malfunctions within SDM itself. Upon passing the test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.
The SDM checks the wiring connection to each inflator by letting the infinitesimal current flow through the internal circuit and verify the resistance. But if the voltage is out of range, SDM is unable to check the airbag system properly.
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