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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 334 (Lighting System) >> Diagnostic Information and Procedures >> DTC B258A: Low Beam Control Circuit Short to Battery >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Headlamp Low Beam Relay Control 1 1 B258A 01 -
Low Beam Headlamp Control - Left (with T4F) 1 1 1 -
Low Beam Headlamp Control - Right (with T4F) 1 1 1 -
Headlamp Assembly Ground - Left - 1 - -
Headlamp Assembly Ground - Right - 1 - -
1. Headlamps Malfunction