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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 205 (Door System, Mirror System & Window System) >> Diagnostic Information and Procedures >> DTC B3127 >> Conditions for Running the DTC

Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The BCM must be commanding the driver door lock actuator to unlock the door lock. The battery positive voltage supplied to the BCM is within normal operating range of 9-16 volts.

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