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 provides an overview of each
diagnostic category.
Diagnostic Fault
Circuit/System Description
The knock sensor system enables the engine control module (ECM) to control
the ignition timing for the best
possible performance while protecting the engine from potentially damaging
levels of detonation. The ECM
uses the knock sensor system to test for abnormal engine n