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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1920 (Door Lock System And Door Handles) >> Diagnostic Information and Procedures >> DTC B3140 or B3150 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, observe the scan tool Rear Doors Lock Cmd and Rear Doors Unlock Cmd parameters while using the driver door lock switch. The parameter should change between On and Off when changing between the commanded states.

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