Cutlass Ciera L4-2.2L VIN 4 (1995)
Vehicle Speed Sensor: Initial Inspection and Diagnostic Overview
Perform before beginning System Diagnosis
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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 Diagnostic Aids. See:
Diagrams/Diagnostic Aids
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If any PCM codes are set, refer to Computers and Control Systems. See: Testing and Inspection
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Refer to System Diagnosis. See: Component Tests and General Diagnostics/System Diagnosis
