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Home >> Oldsmobile >> 1998 >> Bravada >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnosis & Testing >> DTC B3138: Door Lock Circuit High >> Circuit Description
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Circuit Description

TBC module monitors circuit No. 195 (Light Blue wire) as an input to determine if door lock relay circuit is shorted to battery voltage. See WIRING DIAGRAMS  . When circuit is shorted to battery voltage, DTC will set.

Conditions for setting DTC: