Silhouette V6-191 3.1L VIN D TBI (1995)
Vehicle Speed Sensor: Initial Inspection and Diagnostic Overview
PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
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Check IGN Fuse and G200 by noting normal operation of the Blower Motor.
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Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a
continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be
checked by monitoring for a voltage drop with the system operational (under load).
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Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (refer to General
Troubleshooting Procedures). See: Diagrams/Diagnostic Aids
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Refer to System Diagnosis. See: Component Tests and General Diagnostics/System Diagnosis
