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Component Tests: Speedometer

NOTE: Tire size, wear and incorrect inflation can affect speedometer reading and odometer measurement.

Remove instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Loosen screws for terminals "A", "B" and "C" on rear of speedometer. See Fig 2 . DO NOT loosen screws too much, or resistance cannot be measured properly. Measure resistance between indicated terminals. If resistance is not as specified, replace speedometer.

Fig 1: Testing Oil Pressure Gauge
G00011927Courtesy of MAZDA MOTORS CORP.
Fig 2: Testing Speedometer
G99F03671Courtesy of MAZDA MOTORS CORP.
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