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Home >> GMC >> 1999 >> S15/T15 Jimmy 2WD V6-4.3L VIN W >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Body Control Module >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data Definitions >> Outputs >> Headlamp Power Relay
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Headlamp Power Relay

Range: ON/OFF
The headlamp power relay output refers to the commanded state of the headlamp power relay coil. ON displays when the BCM commands the headlamp power relay coil to turn ON.

OFF displays when the BCM does not command the headlamp power relay coil to turn ON.

The BCM then does not allow current to the headlamp power relay coil. The headlamps remain OFF.
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