Operation CHARM
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Buick
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1995
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Skylark L4-138 2.3L DOHC VIN D MFI
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Repair and Diagnosis
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Instrument Panel, Gauges and Warning Indicators
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Testing and Inspection
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Component Tests and General Diagnostics
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Circuit Operation - Base Cluster
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Odometers
Odometers
Both the Trip Odometer and the Total
Odometer
are mechanical displays. Each is driven by an electric motor that is fed from the solid state circuit board. These stepper motors turn in response to the number of pulses received from the PCM.