Buick Regal: Schematic Wiring Diagrams
HEADLIGHTS/DAYTIME RUNNING LIGHTS (DRL) WIRING SCHEMATICS
Controls and Indicators
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Halogen Lamps and Daytime Running Lamps (T4A)
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Left LED Headlamp Power, Ground and Serial Data (T4L)
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Left LED Low Beam Lamps, Cornering Lamp and Cooling Fan (T4L)
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Left LED High Beam Lamps, and High Beam Spot (T4L)
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Right LED Headlamp Power, Ground and Serial Data (T4L)
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Right LED Low Beam Lamps, Cornering Lamp and Cooling Fan (T4L)
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Right LED High Beam Lamps, and High Beam Spot (T4L)
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Daytime Running Lamps (T4L)
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Automatic Leveling and Adaptive Forward Lighting - Power, Ground, Serial Data and Sensors (T4L)
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Automatic Leveling and Adaptive Forward Lighting - Aiming, Leveling and Beam Control (T4L)
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Manual Leveling (TR6)
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FOG LIGHTS WIRING SCHEMATICS
Front Fog Lamps
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EXTERIOR LIGHTS WIRING SCHEMATICS
Controls and Indicators
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Park Lamps, Tail/Stop Lamps, Tail Lamps, and Side Marker - Left
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Park Lamps, Tail/Stop Lamps, Tail Lamps, and Side Marker - Right
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Turn Signal Lamps - Left Front
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Turn Signal Lamps - Right Front
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Stop/Turn Lamps, Center High Mounted Stop Lamp, and Liftgate Courtesy Lamps
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Backup and License Lamps
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INTERIOR LIGHTS WIRING SCHEMATICS
Controls and Rear Compartment Lamp
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Overhead and Instrument Panel Compartment Lamps
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Accent and Flood Lamps - Doors (C93)
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Accent and Flood Lamps - Instrument Panel and Floor (C93)
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INTERIOR LIGHTS DIMMING WIRING SCHEMATICS
Controls, Instrument Panel and Floor Console Lamps
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Doors and Overhead Lamps
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Indicator Lamps (1 of 2)
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Indicator Lamps (2 of 2)
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SPECIAL TOOLS AND EQUIPMENT
SPECIAL TOOLS
EL-38522
J-38522
Variable Signal Generator
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SPECIFICATIONS
FASTENER SPECIFICATIONS
Reusable Threaded Fastener Tightening Specifications
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Mirrors
SPECIFICATIONS
FASTENER SPECIFICATIONS
Reusable Threaded Fastener Tightening Specifications
NOTE:
All fasteners listed in this table can be reused after removal.
SCHEMATIC WIRING DIAGRAMS
INSIDE REAR
DTC B154A or B154B
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
SEE MORE:
Symptoms - Power Steering System
NOTE: Review the system description and operation in order to
familiarize yourself
with the system functions. Refer to Power Steering System Description and
Operation (Electronic Power Steering).
Visual/Physical Inspection
Inspect for aftermarket devices which could affect the operation of the
Engine Oil Pressure Light
Caution:
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
Add oil if required, but if the oil
level is within the operating ra
