DESCRIPTION
Examples used in this article are general in nature and do not necessarily
relate to a specific engine or
system. Illustrations and procedures have been chosen to guide mechanic through
* PLEASE READ THIS FIRST *
NOTE: Examples used in this article are general in nature and do not
necessarily
relate to a specific engine or system. Illustrations and procedures have
been chosen to gui
* PLEASE READ THIS FIRST *
NOTE: Examples used in this article are general in nature and do not
necessarily
relate to a specific engine or system. Illustrations and procedures have
been chosen to gui
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.
Refer to Diagnostic Procedure Instructions for an overview of each
diagnostic category.
DTC Descripto
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 engine
control module (ECM) to
operate both fans together at low or high speeds using 2 fan control circ