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Isuzu Truck
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1998
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Amigo 2WD L4-2.2L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Description of On-Board Diagnostics
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System Operation
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PCM and Sensors
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Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor (VSS)
The
PCM
determines the speed of the vehicle by converting a pulsing
voltage signal
from the vehicle speed sensor (VSS) into miles per hour. The PCM uses this signal to operate the speedometer.