Buick Regal: Description and Operation
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Cooling Fan Description and Operation
System Overview
The engine cooling fan system consists of 2 electric cooling fans and 3 fan
relays. The cooling fan relays
are arranged in a series/parallel (S/P) configuration. This allows the engin
Cooling System Description and Operation
Engine Coolant Indicators
The instrument panel cluster (IPC) shows the engine temperature on the
temperature gauge. The
value is sent on the data communication line from engine control module (EC
Firing Order and Cylinder Identification
NOTE: This information is intended as a quick reference for firing
order and
cylinder identification only. The information provided covers many
vehicles and may include some information that does not
SEE MORE:
DTC C1230 or C1231
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.
Diagnostic Procedure Instructions provide an overview of each diagnostic
category.
DTC Descriptors
DT
Special Tools and Equipment
SPECIAL TOOLS
BO-38185
J-38185
Hose Clamp Pliers
GE-8800
J-43600
ACR 2000 Air
Conditioning
Service Center
GE-39400-A
J-39400-A
Halogen Leak
Detector
GE-41447
J-41447
R-134a/R123yf
A/C Tracer Dye -
Box of 24
GE-42220
J-42220
Universal 12V
Leak Detection
Lamp
GE-43872
J-43872
Fluorescent Dye
Clea
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