B3128

Schematic:

CIRCUIT DESCRIPTION
The body control module (BCM) provides battery voltage to the Driver Door Unlock Relay through circuit 1391. This DTC will fail current when circuit 1391 is shorted to battery or open when output is Off.

DTC PARAMETERS
^ Output is Off
^ Short to Battery of Open
^ No telltale illumination

DIAGNOSTIC AIDS
If condition is expected to be intermittent, moving wires will help in duplication of condition.

TEST

Diagnostic Chart: